# Subaru Forester 2014–2018 Problems, Reliability & Costs

Canonical: https://carcasefile.com/vehicles/subaru-forester-2014-2018/

> Subaru Forester 2014–2018: the oil-consumption and CVT years to watch, real repair costs, DIY fixes with parts, and which years are the best used buy.

Case file · SUBARU-FORESTER-2014-2018 · 4th gen (SJ)

# Subaru Forester 2014–2018 Common problems, reliability & repair costs

The SJ Forester is a roomy, all-wheel-drive compact SUV that's genuinely useful and mostly dependable, but it carries two well-documented asterisks. The 2.5L FB25 engine was the subject of an oil-consumption class action (warranty extended to 8 years/100,000 miles), and the CVT had early teething problems that pushed Subaru to extend that warranty to 10 years/100,000 miles. Buy a clean, well-serviced one, ideally 2016+, and it's a solid long-hauler. Buy an early oil-burner with no service history and you can inherit someone else's headache.

[Shop Subaru Forester parts on Amazon →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DSubaru%2BForester%2Bparts) Verified part numbers below Affiliate link to Amazon. We may earn a commission if you buy. Your price is the same, and a commission never changes a verdict.

Case data plate SUBARU-FORESTER-2014-2018

Case score
7/10

Best years

2016, 2017, 2018

Avoid

2014 (worst oil consumption + earliest CVT complaints) +1 more

Status
Reviewed
Amended 2026-08-30

[How we score →](https://carcasefile.com/methodology/)

Exhibit A · Subaru Forester LuvsMG481 · [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0) · [Wikimedia](https://commons.wikimedia.org/wiki/File:2016_Subaru_Forester_STI_front.jpg)

Case verdict At a glance

Case score
7/10

Best years

2016, 2017, 2018

Years to avoid

2014 (worst oil consumption + earliest CVT complaints) +1 more

Worst system

electrical

#1 problem

**Brake lights fail to illuminate (recall)** · $0–$150 at an independent shop

Companion pages for this car generation:

📄 Dossier Overview Active Page [📋 Inspection Checklist Field Guide ->](https://carcasefile.com/vehicles/subaru-forester-2014-2018/checklist/) [💰 Maintenance Costs 5-Year Ledger ->](https://carcasefile.com/vehicles/subaru-forester-2014-2018/cost-to-maintain/) [🩺 Audit a Quote Estimate Case File ->](https://carcasefile.com/estimate-doctor/?vehicle=Subaru%20Forester)

## Engines

- **FB25** · 2.5L gasoline, 170 hp
- **FA20F (turbo)** · 2.0L gasoline, 250 hp

## Transmissions

- **TR580 (Lineartronic)**· cvt
- **manual**, 6-speed

## Drivetrain

AWD

## Body

suv

## Trims

2.5i, 2.5i Premium, 2.5i Limited, 2.5i Touring, 2.0XT Premium, 2.0XT Touring

Parts desk

## Subaru Forester part-number cross-reference

Start from the OEM number, then pick the brand you trust. Verified equivalents for the Subaru Forester (2014–2018).

Part links go to Amazon, and to eBay where Amazon does not stock the part.
Affiliate links, so we may earn a commission if you buy. Your price is
unchanged, and a commission never changes a verdict.

### Oil filter

2.5L FB25 (all years)
swipe →

OEM part
Subaru
[Find Subaru oil filter on Amazon](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DSubaru%2B15208AA15A)

Cross-ref Verified fit · 07.26

Wix

Retailer fitment: 2011-2018 Forester / 2013-2018 Outback (FB engines).
[Look up Wix oil filter](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00FQXPN1M)

Cross-ref Verified fit · 07.26

Fram

Fram's listed application for FB25 Subarus; enthusiast forums note its bypass-valve spec (13 psi) is lower than Subaru's 23.2 psi spec. Some owners prefer OEM.
[Check Fram oil filter](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DFram%2BPH7317)

Cross-ref Verified fit · 07.26

Denso

Per oil-filter cross-reference database for 15208AA15A.
[See Denso oil filter](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB0153B45CO)

Verified via: [SubaruPartsDeal: 2016 Forester OEM oil filter catalog (15208AA160)](https://www.subarupartsdeal.com/oem-2016-subaru-forester-oil_filter.html), [Mann Engineering: Subaru genuine oil filter 15208AA15A for FB20/FB25 (2014+ Forester)](https://www.mann-engineering.com/products/subaru-genuine-oil-filter-for-fb20-fb25), [oilfilter-crossreference.com: Subaru 15208AA15A alternatives](https://www.oilfilter-crossreference.com/convert/SUBARU/15208AA15A), [Walmart: WIX 57055 fitment (2011-2018 Subaru Forester)](https://www.walmart.com/ip/WIX-Oil-Filter-57055-Fits-select-2011-2018-SUBARU-FORESTER-2013-2018-SUBARU-OUTBACK/145627687), [Walmart: FRAM PH7317 fitment (2013-2023 Subaru Outback FB25)](https://www.walmart.com/ip/Oil-Filter-Compatible-with-2013-2023-Subaru-Outback-2014-2015-2016-2017-2018-2019-2020-2021-2022/1675378565)

### Engine air filter

2.5L FB25 (all years)
swipe →

OEM part
Subaru
[Compare Subaru engine air filter on Amazon](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00IGZQFYQ)

Cross-ref Verified fit · 07.26

Fram

Extra Guard; retailer fitment confirms 2009-2018 Forester (2.5L).
[Find Fram engine air filter](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB001C6Q34S)

Cross-ref Verified fit · 07.26

K&N

Washable/reusable drop-in panel; per air-filter cross-reference database.
[Look up K&N engine air filter](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB000COC0GQ)

Cross-ref Verified fit · 07.26

EPAuto

Listing explicitly covers Forester 2009-2018; equivalent to CA9997.
[Check EPAuto engine air filter](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB01AXAQ4OC)

Verified via: [SubaruPartsDeal: 16546AA12A fitment (2009-2018 Forester 2.5L)](https://www.subarupartsdeal.com/parts/subaru-element-air-cleaner~16546aa12a.html), [airfilter-crossreference.com: Subaru 16546AA12A alternatives](https://www.airfilter-crossreference.com/convert/SUBARU/16546AA12A), [PartsGeek: 2009-2018 Subaru Forester air filter (Fram CA9997)](https://www.partsgeek.com/yns2x85-subaru-forester-air-filter.html), [Amazon: EPAuto GP997 (CA9997) fitment incl. Forester 2009-2018](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2FEPAuto-Replacement-2008-2016-2005-2016-2015-2016%2Fdp%2FB01AXAQ4OC&raw=1)

### Cabin air filter

All engines, 2014-2018
swipe →

OEM part
Subaru
[See Subaru cabin air filter on Amazon](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00IW33T5A)

Cross-ref Verified fit · 07.26

Fram

Fresh Breeze; retailer fitment confirms 2009-2018 Forester.
[Compare Fram cabin air filter](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DFram%2BCF10930)

Cross-ref Verified fit · 07.26

EPAuto

Activated-carbon; listing explicitly covers Forester 2009-2018.
[Find EPAuto cabin air filter](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB083XF3YW4)

Cross-ref Verified fit · 07.26

Wix

Per air-filter cross-reference database for 72880FG000.
[Look up Wix cabin air filter](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DWix%2BWP2032)

Verified via: [SubaruPartsDeal: Forester OEM cabin filters by year (72880FG000 for 2009-2018)](https://www.subarupartsdeal.com/oem-subaru-forester-cabin_air_filter.html), [airfilter-crossreference.com: Subaru 72880FG000 alternatives](https://www.airfilter-crossreference.com/convert/SUBARU/72880FG000), [Amazon: FRAM CF10930 for Subaru](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2FFRAM-CF10930-Cabin-Air-Filter%2Fdp%2FB07HFSPS1L&raw=1), [Amazon: EPAuto CP930 (CF10930) fitment incl. Forester 2009-2018](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2FEPAuto-Compatible-Crosstrek-2016-2017-2009-2018%2Fdp%2FB083XF3YW4&raw=1)

### Spark plugs

2.5L FB25 (all years, 4 plugs); same NGK plug is also listed for the 2.0XT
swipe →

OEM part
Subaru

The OE plug is NGK SILZKAR7B11; 22401AA781 supersedes 22401AA780 (2011-2014 catalog number).
[Check Subaru spark plugs on Amazon](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DSubaru%2B22401AA781)

Cross-ref Verified fit · 07.26

NGK

Laser Iridium (OE plug sold aftermarket). Retailer application list includes 2014-2018 Forester 2.5i and 2.0XT.
[See NGK spark plugs](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DNGK%2BSILZKAR7B11)

Cross-ref Verified fit · 07.26

Denso

Iridium TT; listed as a cross for NGK SILZKAR7B11 in the cross-reference database (Denso VFXEH22 also listed). Verify gap (1.1 mm spec) before install.
[Compare Denso spark plugs](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DDenso%2BIXEH22TT)

Verified via: [SubaruPartsDeal - Forester OEM spark plugs (22401AA781 / SILZKAR7B11 for 2011-2018 2.5i)](https://www.subarupartsdeal.com/oem-subaru-forester-spark_plug.html), [MAPerformance - NGK SILZKAR7B11 applications (2014-2018 Forester 2.5i, 2.0XT)](https://www.maperformance.com/products/ngk-laser-iridium-spark-plugs-4-pack-multiple-subaru-fitments-silzkar7b11-4pk), [sparkplug-crossreference.com - NGK SILZKAR7B11 alternatives (Denso IXEH22TT, VFXEH22)](https://www.sparkplug-crossreference.com/convert/NGK_PN/SILZKAR7B11)

### Front brake pads

2.5i (non-turbo) front axle. OEM kit is year-split; the 2.0XT uses different front pads (26296AJ010 for 2014-2015, 26296SG000 for 2015-2018)
swipe →

OEM part
Subaru

2015-2017 2.5i. 2014 2.5i uses 26296SC010; 2018 2.5i uses 26296FJ030.
[Find Subaru front brake pads on Amazon](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DSubaru%2B26296FJ020)

Cross-ref Verified fit · 07.26

Akebono

ProACT ultra-premium ceramic with stainless hardware. Retailer fitment 2011-2018 Forester front.
[Look up Akebono front brake pads](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00JIXSY3U)

Cross-ref Verified fit · 07.26

Wagner

OEX premium ceramic. Retailer fitment 2010-2018 Forester front.
[Check Wagner front brake pads](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB016VAV6M8)

Verified via: [SubaruPartsDeal - Forester OEM brake pad sets by year (26296FJ020 2015-2017 2.5i; 26296FJ030 2018 2.5i; 26296AJ010 / 26296SG000 for 2.0XT)](https://www.subarupartsdeal.com/oem-subaru-forester-brake_pad_set.html), [SubaruPartsDeal - 2014 Forester front pad kits (26296SC010 for 2.5i, 26296AJ010 for 2.0XT)](https://www.subarupartsdeal.com/oem-2014-subaru-forester-brake_pad_set.html), [SubaruPartsDeal - 26296FJ030 front pad kit (2018 Forester 2.5i)](https://www.subarupartsdeal.com/parts/subaru-pad-kit-f~26296fj030.html), [PartsHawk - Akebono ACT1539 fitment (2011-2018 Forester front)](https://partshawk.com/akebono-act1539-disc-brake-pad-set-for-subaru-forester.html), [PartsHawk - Wagner OEX1539 fitment (2010-2018 Forester front)](https://partshawk.com/wagner-oex1539-disc-brake-pad-set.html)

### Wiper blades

All 2014-2018 Forester - 26" driver / 17" passenger / 14" rear
swipe →

Cross-ref Verified fit · 07.26

Bosch

Sold as the paired set 26A17A; lengths match the Forester's 26"/17" spec (rear 14" is a separate conventional/rear blade).
[See Bosch wiper blades on Amazon](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DBosch%2BICON%2B26A%2B%252B%2B17A)

Cross-ref Verified fit · 07.26

Rain-X

Latitude Water Repellency 2-n-1: 5079281-2 is the 26" driver blade, 5079283-2 the 17" passenger blade.
[Compare Rain-X wiper blades](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DRain-X%2B5079281-2%2B%252B%2B5079283-2)

Cross-ref Verified fit · 07.26

Trico

Trico Force beam blades: 25-260 = 26" driver (fitment list includes Forester 2014+), 25-170 = 17" passenger (fitment list includes Forester 2014+).
[Find Trico wiper blades](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DTrico%2B25-260%2B%252B%2B25-170)

Verified via: [AutoPadre - Subaru Forester wiper sizes (2014-2018: 26" / 17" / 14" rear)](https://www.autopadre.com/wiper-size/subaru-forester), [Wiper Haus - Bosch 2014-2018 Forester set (26" / 17" / 14")](https://wiperhaus.com/products/2014-2018-subaru-forester-wiper-blade-set), [Amazon - Bosch ICON 26A17A set (26A & 17A)](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2FICON-26A17A-Driver-Passenger-Premium%2Fdp%2FB07VDVCD71&raw=1), [Amazon - Rain-X 5079281-2 (26" Latitude Water Repellency)](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2FRain-X-5079281-2-Latitude-Water-Repellency%2Fdp%2FB016NA9Y4S&raw=1), [Amazon - Rain-X 5079283-2 (17" Latitude Water Repellency)](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2FRain-X-5079283-2-Latitude-Water-Repellency%2Fdp%2FB015JTJMU0&raw=1), [FinditParts - Trico 25-260 (26" Force, fits Forester 2014-2026)](https://www.finditparts.com/products/7642330/trico-25-260), [FinditParts - Trico 25-170 (17" Force, fits Forester 2014-2024)](https://www.finditparts.com/products/3980316/trico-25-170)

### Serpentine / drive belt

2.5L FB25 (single 6-rib belt, ~77.25" effective)
swipe →

OEM part
Subaru

Supersession of 809221210; fits 2014-2018 Forester (also Crosstrek/Impreza of the era).
[Look up Subaru serpentine / drive belt on Amazon](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB071VMMV3G)

Cross-ref Verified fit · 07.26

Gates

Micro-V, EPDM. Fitment: 2014-2018 Forester 2.5L (also 2015-2017 Impreza/WRX/Crosstrek). Cross-references OEM 23780AA130.
[Check Gates serpentine / drive belt](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB000C2UJZM)

Verified via: [FinditParts - Gates K060772 cross references (OEM Subaru 23780AA130 / 809221210) + 2014-2018 Forester 2.5L fitment](https://www.finditparts.com/products/345591/gates-k060772), [Walmart - Gates K060772 fits select 2014-2018 Subaru Forester](https://www.walmart.com/ip/Gates-K060772-Serpentine-Belt-Fits-select-2014-2018-SUBARU-FORESTER-2016-2017-SUBARU-CROSSTREK/42730692), [SubaruParts.com - 2014-2018 Subaru serpentine belt 23780AA130](https://www.subaruparts.com/oem-parts/subaru-serpentine-belt-23780aa130)

### Battery

All 2014-2018 Forester - BCI Group 35 (Q85 is the JIS-size equivalent on the OE label)
swipe →

Cross-ref Verified fit · 07.26

Interstate

Flooded Group 35, 550 CCA. Interstate's own fit tool confirms it for the 2016 Forester H4/2.5L.
[See Interstate battery on Amazon](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB0B8B59SXN)

Cross-ref Verified fit · 07.26

Exide

Marathon Max AGM Group 35, 650 CCA. Fitment chart includes 2014-2018 Forester.
[Compare Exide battery](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DExide%2BMX35)

Verified via: [AutoPadre - Subaru Forester battery size (Group 35 for 2014-2018)](https://www.autopadre.com/battery-size/subaru-forester), [Interstate Batteries - MT-35 fits 2016 Subaru Forester H4/2.5L (Group 35, 550 CCA)](https://www.interstatebatteries.com/products/mt-35/2016-subaru-forester-h425l-standard), [PartCatalog - Exide MX35 (Group 35, 650 CCA) fitment incl. 2014-2018 Forester](https://www.partcatalog.com/products/exide-mx35-vehicle-battery), [PowerTex - 2014 Forester battery page (BCI Group 35 / Q85)](https://powertexbatteries.com/products/2014-subaru-forester-car-battery-bci-group-35-q85-lithium-lifepo4-automotive-battery)

Amazon and eBay affiliate links. Prices unchanged for you. Confirm fitment against your VIN; mid-generation changes exist.

Verdict

## Should I buy a 2014–2018 Subaru Forester?

Buy it, and lean toward the later years. A well-maintained SJ Forester is a practical, safe, all-weather family hauler with standard AWD and excellent visibility. The two things that separate a great buy from a gamble are the FB25 oil-consumption issue and the early-CVT reliability question. A 2016–2018 car with a documented service history clears most of the risk; both major defects are covered by extended Subaru warranties (8 yr/100k for oil, 10 yr/100k for the CVT), but those windows are closing or closed on older cars, so verify before you buy. The turbo XT is genuinely fun and durable but demands strict oil discipline. Skip any early car that's vague about oil top-offs or CVT behavior.

Best years

2016, 2017, 2018

Years to avoid

2014 (worst oil consumption + earliest CVT complaints), 2015 (improving but still has oil-consumption and CVT reports)

Inspection Companion

### Pre-Purchase Checklist for Subaru Forester

[Open Field Checklist Page ->](https://carcasefile.com/vehicles/subaru-forester-2014-2018/checklist/)

- ☐ Ask the seller how often they add oil between changes. A car needing a quart every 1,000–1,200 miles is exhibiting the known FB25 consumption problem. Pull the dipstick yourself and check the level and color.
- ☐ Confirm whether the oil-consumption warranty extension (8 yr/100,000 mi) or any consumption-test repair was ever performed on this VIN. A Subaru dealer can check.
- ☐ Test-drive for CVT behavior: feel for shudder, hesitation, or jerking on light throttle and from a stop. Any of those is a red flag on an early car.
- ☐ Check the CVT warranty status (10 yr/100,000 mi) by VIN at a Subaru dealer; a car still inside coverage is a much safer bet.
- ☐ Inspect the windshield closely for chips, stars, or stress cracks, especially on 2017–2018 cars. Replacement plus EyeSight camera recalibration is expensive.
- ☐ Have the battery and parasitic draw checked, particularly on later cars that have sat; weak/dead-battery complaints are common.
- ☐ Look underneath for rear coil-spring corrosion or breakage (more common on early, salt-belt cars) and check for any rear differential weeping.
- ☐ Confirm all maintenance: CVT fluid service, differential fluid, and timing-chain-driven engine means no belt, but oil history is everything.

Verified-fit parts for the Subaru Forester (2014–2018).

Parts desk

Parts cross-reference

OEM number first, verified equivalents below it. Links go to Amazon.

Oil filter

2.5L FB25 (all years)

- [OEM Subaru 15208AA15A →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DSubaru%2B15208AA15A)
- [Wix 57055 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00FQXPN1M)
- [Fram PH7317 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DFram%2BPH7317)
- [Denso 150-2003 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB0153B45CO)

Engine air filter

2.5L FB25 (all years)

- [OEM Subaru 16546AA12A →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00IGZQFYQ)
- [Fram CA9997 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB001C6Q34S)
- [K&N 33-2304 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB000COC0GQ)
- [EPAuto GP997 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB01AXAQ4OC)

Cabin air filter

All engines, 2014-2018

- [OEM Subaru 72880FG000 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00IW33T5A)
- [Fram CF10930 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DFram%2BCF10930)
- [EPAuto CP930 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB083XF3YW4)
- [Wix WP2032 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DWix%2BWP2032)

Spark plugs

2.5L FB25 (all years, 4 plugs); same NGK plug is also listed for the 2.0XT

- [OEM Subaru 22401AA781 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DSubaru%2B22401AA781)
- [NGK SILZKAR7B11 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DNGK%2BSILZKAR7B11)
- [Denso IXEH22TT →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DDenso%2BIXEH22TT)

Front brake pads

2.5i (non-turbo) front axle. OEM kit is year-split; the 2.0XT uses different front pads (26296AJ010 for 2014-2015, 26296SG000 for 2015-2018)

- [OEM Subaru 26296FJ020 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DSubaru%2B26296FJ020)
- [Akebono ACT1539 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00JIXSY3U)
- [Wagner OEX1539 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB016VAV6M8)

Wiper blades

All 2014-2018 Forester - 26" driver / 17" passenger / 14" rear

- [Bosch ICON 26A + 17A →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DBosch%2BICON%2B26A%2B%252B%2B17A)
- [Rain-X 5079281-2 + 5079283-2 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DRain-X%2B5079281-2%2B%252B%2B5079283-2)
- [Trico 25-260 + 25-170 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DTrico%2B25-260%2B%252B%2B25-170)

Serpentine / drive belt

2.5L FB25 (single 6-rib belt, ~77.25" effective)

- [OEM Subaru 23780AA130 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB071VMMV3G)
- [Gates K060772 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB000C2UJZM)

Battery

All 2014-2018 Forester - BCI Group 35 (Q85 is the JIS-size equivalent on the OE label)

- [Interstate MT-35 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB0B8B59SXN)
- [Exide MX35 →](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3DExide%2BMX35)

Confirm fitment against your VIN. Mid-generation changes exist. Affiliate links. We may earn a commission at no cost to you.

Known faults

## Common Subaru Forester problems & repair costs

### Excessive oil consumption (FB25 2.5L)

$2,500–$6,000

engine severe 2014–2018 (worst on early 2014–2015) ~30k–100k mi

**Symptoms:** Oil level dropping noticeably between changes, sometimes a quart every 1,000–1,500 miles, often with no visible leak and little smoke. Low-oil warnings if not topped up. Worst on early-build cars.

**Fix:** Subaru's documented fix is an oil-consumption test followed by a piston-ring/short-block repair if it fails. The class-action settlement (Yaegar v. Subaru) extended the engine warranty to 8 years/100,000 miles for this issue and reimbursed prior repairs. Out of coverage, a ring/short-block job is the realistic fix; many owners simply manage it by checking and topping oil.

Sources: [Subaru oil consumption class action (Class Law Group)](https://www.classlawgroup.com/subaru-oil-consumption-class-action-lawsuit), [Subaru settles oil-burning class action (Top Class Actions)](https://topclassactions.com/lawsuit-settlements/lawsuit-news/subaru-settles-oil-burning-class-action-lawsuit/), [NHTSA complaints: 2014 Forester engine](https://www.nhtsa.gov/vehicle/2014/SUBARU/FORESTER)

### CVT (TR580) shudder, jerking, or failure

$3,000–$7,000

transmission severe 2014–2015 (early builds most affected)

**Symptoms:** Shudder or judder on light acceleration, hesitation or jerking from a stop, and in worst cases loss of drive. Most complaints cluster on the earliest cars; later builds and firmware are markedly better.

**Fix:** Fluid service and a reflash resolve many early shudder complaints; a failed transmission needs a reman or replacement unit. Subaru extended the CVT warranty to 10 years/100,000 miles on these cars, so confirm coverage before assuming the worst.

Sources: [Subaru CVT reliability and common issues (Rick's Free Auto Repair Advice)](https://ricksfreeautorepairadvice.com/subaru-cvt-transmission-reliability-and-common-issues/), [NHTSA complaints: 2015 Forester powertrain](https://www.nhtsa.gov/vehicle/2015/SUBARU/FORESTER)

### Spontaneous windshield cracking

$400–$1,300

body/glass moderate 2017–2018 (acoustic glass)

**Symptoms:** Cracks that appear with no obvious impact, often starting from the edge or low on the glass, sometimes overnight or in temperature swings. Tied to the acoustic-glass windshields Subaru introduced around MY2017.

**Fix:** Windshield replacement. On EyeSight-equipped cars the forward-facing camera must be recalibrated after replacement, which adds cost. A separate class action covered 2017–2019 Forester/Outback/Legacy with reimbursements and extended coverage for eligible owners.

Sources: [Subaru cracked-windshield defect lawsuits (ClassAction.org)](https://www.classaction.org/subaru-cracked-windshield-defect-lawsuits), [New ruling in Subaru cracked-windshield lawsuit (Torque News)](https://www.torquenews.com/1084/new-ruling-subaru-cracked-windshield-lawsuit-now-adds-25m-cars)

### Parasitic battery drain / premature dead battery

$200–$600

electrical moderate 2014–2018

**Symptoms:** Car won't start after sitting a few days; repeatedly dead or weak battery despite the battery testing okay. Linked to parasitic draw from the vehicle's electronics rather than a single failed component.

**Fix:** Often a stronger replacement battery solves it; persistent cases need a parasitic-draw test to find the offending circuit or module. Many owners fit a higher-capacity battery as the practical fix.

Sources: [Subaru Forester battery draining causes + diagnosis (Drivetrain Resource)](https://www.700r4transmissionhq.com/subaru-forester-battery-draining/)

### Rear coil spring breakage

$250–$600

suspension moderate 2014 (early cars, salt-belt)

**Symptoms:** A clunk or sag at one rear corner, sometimes a broken coil found at inspection. More common on early cars in road-salt regions where corrosion plays a role.

**Fix:** Replace the broken spring (replacing in pairs is good practice) and inspect the mating perches for corrosion. A straightforward suspension job.

Sources: [Subaru Forester common problems (CarBuzz)](https://carbuzz.com/subaru-forester-problems-reported-over-the-last-generations/)

### Brake lights fail to illuminate (recall)

$0–$150

electrical safety 2014–2016

**Symptoms:** Brake lights may not come on when the pedal is pressed (or stay on), due to a brake-light switch issue. A safety recall covered a large number of these vehicles.

**Fix:** Recall repair: done free at a Subaru dealer if the VIN is open. Outside recall it's an inexpensive brake-light switch replacement. Verify the recall was completed by VIN.

Sources: [NHTSA recalls: 2015 Forester](https://www.nhtsa.gov/vehicle/2015/SUBARU/FORESTER)

Outside the two big-ticket risks, the SJ Forester is reasonable to own. Routine maintenance is conventional, the FB25 is a timing-chain engine (no belt to replace), and AWD parts and service are widely available since Subaru sells these in volume. Plan for CVT fluid service, periodic differential fluid, brakes, tires, and the occasional battery. The numbers that hurt are an out-of-warranty ring/short-block repair, a failed CVT, or a windshield-plus-EyeSight-recalibration. Budget for those only on early, undocumented, or acoustic-glass cars.

Cost calculator

### What will this Subaru Forester cost you by a given mileage?

Drag to a mileage. We total the documented problems whose typical onset falls at or before it. The same cost ranges listed above, nothing new invented.

100k mi

$0 estimated repair range

🩺
Have a repair quote for this Subaru Forester?

Audit against OEM book times, uncover duplicate pad and rotor labor, and verify parts markups.

[Audit Repair Estimate ->](https://carcasefile.com/estimate-doctor/?vehicle=Subaru%20Forester)

DIY repairs

## How to fix common Subaru Forester problems (DIY)

### Engine oil & filter change (FB25)

easy 30–45 min saves ~$40–$90

**Tools:** Floor jack + jack stands or ramps, 17mm socket or wrench (drain plug), Oil filter cap wrench, Drain pan + funnel

- Warm the engine briefly, then safely raise and support the front of the car.
- Remove the drain plug and let the oil fully drain; replace the crush washer.
- Spin off the cartridge/filter, lube the new filter's seal, and install it to spec.
- Reinstall the drain plug, then refill with the correct synthetic oil (about 5 quarts).
- Run the engine, check for leaks, then recheck the level on level ground. Note the level so you can track consumption.

Parts

- [Engine oil filter (FB25 Forester)](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3D2014-2018%2Bsubaru%2Bforester%2Boil%2Bfilter) · Amazon $8–$18
- [Full synthetic 0W-20 oil (5 qt)](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3D2014-2018%2Bsubaru%2Bforester%2B0w-20%2Bsynthetic%2Boil) · Amazon $25–$40

### Replace cabin & engine air filters

easy 20 min saves ~$50–$110

**Tools:** Hands only (cabin filter behind glovebox), Flat screwdriver (airbox clips, if needed)

- Open the glovebox, squeeze in the side stops to drop it fully, and pull out the cabin-filter cover.
- Slide out the old cabin filter and insert the new one with the airflow arrow pointing down.
- Unclip the engine airbox lid, lift out the old panel filter, drop in the new one, and re-clip the lid.

Parts

- [Cabin air filter (SJ Forester)](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3D2014-2018%2Bsubaru%2Bforester%2Bcabin%2Bair%2Bfilter) · Amazon $10–$18
- [Engine air filter (SJ Forester)](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3D2014-2018%2Bsubaru%2Bforester%2Bengine%2Bair%2Bfilter) · Amazon $15–$25

### Replace a broken rear coil spring

moderate 1.5–3 hrs saves ~$150–$300

**Tools:** Floor jack + jack stands, Socket set + breaker bar, Penetrating oil, Torque wrench

- Raise and support the rear, then remove the wheel on the affected side.
- Support the rear knuckle/lower arm with a jack to control spring tension.
- Loosen the lower shock or arm fasteners as needed and carefully relieve spring tension.
- Remove the old spring and isolators; transfer or replace the isolators on the new spring.
- Seat the new spring correctly, reassemble, torque fasteners to spec, and reinstall the wheel.
- Lower the car and check ride height; replacing both sides keeps the rear even.

Parts

- [Rear coil spring (SJ Forester)](https://carcasefile.com/go?u=https%3A%2F%2Fwww.amazon.com%2Fs%3Fk%3D2014-2018%2Bsubaru%2Bforester%2Brear%2Bcoil%2Bspring) · Amazon $40–$90 each

Some parts links are affiliate links. We may earn a commission at no cost to you. We only list parts that fit this generation.

## The short version

The 2014–2018 Subaru Forester is one of the most practical compact SUVs of its era: standard all-wheel drive, huge glass and great visibility, a roomy cabin, and a strong safety record. For most buyers it’s a smart, dependable used car. But it carries two issues serious enough that Subaru extended warranties for both.

The first is oil consumption on the 2.5-liter FB25 engine. Enough owners reported the engine drinking oil between changes that it became a class-action settlement, with the engine warranty extended to 8 years / 100,000 miles and reimbursements for owners who’d already paid. The second is the early Lineartronic CVT, which had shudder and failure complaints concentrated on the first couple of model years, enough that Subaru pushed that warranty out to 10 years / 100,000 miles.

Neither of those should scare you off a good car. They should change *which* car you buy.

## What that means when you’re shopping

If you’re looking at a **2016–2018** Forester, you’ve mostly cleared the worst of both risks. Buy on condition, service history, and a clean test drive like any used car.

If you’re looking at a **2014–2015** car, treat oil and the CVT as the first two things to verify. Ask how often the seller adds oil; a quart every 1,000–1,500 miles is the known consumption problem. On the drive, feel for any shudder or jerk from a stop. A Subaru dealer can tell you by VIN whether either extended warranty was ever used. A car with a documented ring/short-block repair or a serviced CVT is arguably safer than one that was never touched.

Two more things to eyeball: the windshield (2017+ acoustic glass cracks easily, and EyeSight recalibration makes replacement pricey) and the battery, since parasitic-drain dead-battery complaints are common across the generation. The turbo XT is genuinely good. Just confirm strict oil-change history, because turbos are less forgiving.

**How this file is built:** failure modes and cost ranges are compiled from NHTSA complaint and recall data, Subaru’s own class-action settlements and warranty extensions, and owner reporting, then sanity-checked against shop-floor experience. Cost figures are independent-shop estimates and vary by region. Spot something off? [Tell us](https://carcasefile.com/disclaimer/).

Myths, checked

## Viral car myths, checked against this car

Misleading

### [Is the "$1 Japanese oil trick" that stops engine wear forever real?](https://carcasefile.com/claims/1-dollar-japanese-oil-trick-mos2-engine-wear/)

The 'Japanese oil trick' is almost certainly MoS2 (molybdenum disulfide), a real industrial friction modifier. It is German, not Japanese (Liqui Moly popularized it), sold openly at every parts store for $15-20, has real but modest measured friction benefits, and was never buried by anyone.

Outdated

### [Does a "$1 mineral" really double car battery life? The Epsom-salt reality.](https://carcasefile.com/claims/1-dollar-mineral-doubles-battery-life-myth/)

The mineral is Epsom salt (magnesium sulfate). It was a real desulfation hack for serviceable flooded-cell batteries 40+ years ago. It does not work on modern sealed AGM or EFB batteries, and trying it on yours will void the warranty without helping the battery.

Dangerous

### [Is the "$2 liquid that destroys engine sludge forever" real? Our shop-floor verdict.](https://carcasefile.com/claims/2-dollar-engine-sludge-destroyer-liquid/)

An aggressive solvent flush on a high-mileage engine is a textbook way to spin a bearing. The viral 'kitchen-cabinet flush' is folklore that real shops spend money cleaning up after.

Appendix

## Frequently asked questions

### Which Subaru Forester years should I avoid?

Lean away from the 2014 and, to a lesser degree, 2015 cars. Those carry the highest oil-consumption complaint rates on the FB25 engine and the earliest CVT reliability reports. They aren't automatically bad, since both issues are covered by extended Subaru warranties, but you have to verify the engine and transmission are sound or already repaired. The 2016–2018 cars are the safer used buy.

### Is the Forester's oil consumption covered by Subaru?

Yes, for the affected FB25 engines. A class-action settlement extended the engine warranty to 8 years/100,000 miles for excessive oil consumption and reimbursed owners who'd paid for consumption tests or repairs. If a car is now outside that window, the repair is on you, which is exactly why you check oil habits before buying.

### Are the early Forester CVTs reliable?

Mostly, with caveats. The TR580 CVT had shudder, jerking, and failure complaints concentrated on the earliest 2014–2015 cars, and Subaru extended the warranty to 10 years/100,000 miles in response. Later builds and firmware are considerably better, and Consumer Reports rates the 2016+ CVTs well. Test-drive for any shudder and confirm warranty status by VIN.

### Why do Subaru windshields crack so easily?

Owners of 2017+ Foresters reported windshields cracking with no obvious impact, often from the edge. It's tied to the acoustic-glass windshields Subaru introduced around 2017 and became a separate class action for 2017–2019 models. Replacement is pricier than usual because EyeSight-equipped cars need the forward camera recalibrated afterward.

### How many miles will a 2014–2018 Forester last?

A sound, well-maintained SJ Forester routinely reaches 200,000 miles. The FB25 and the AWD system are durable when serviced; most early retirements trace back to neglected oil consumption or an out-of-warranty CVT failure rather than the car simply wearing out. Documentation is the difference.

Cross-reference

## Every Subaru Forester generation

The full case file run, beyond the generation before and after this one.

- [Subaru Forester 2009–2013 6/10](https://carcasefile.com/vehicles/subaru-forester-2009-2013/)
- [Subaru Forester 2019–2024 7/10](https://carcasefile.com/vehicles/subaru-forester-2019-2024/)
- [Subaru Forester 2025–2026 7/10](https://carcasefile.com/vehicles/subaru-forester-2025-2026/)

## Cross-shopped rivals

Files on what buyers weigh against the Subaru Forester of this era.

- [Ford Escape 2013–2019 4/10](https://carcasefile.com/vehicles/ford-escape-2013-2019/)
- [Jeep Cherokee 2014–2019 4/10](https://carcasefile.com/vehicles/jeep-cherokee-2014-2019/)
- [Kia Soul 2010–2019 5/10](https://carcasefile.com/vehicles/kia-soul-2010-2019/)
- [Nissan Rogue 2014–2020 5/10](https://carcasefile.com/vehicles/nissan-rogue-2014-2020/)

## More Subaru case files

- [Subaru Outback 2015–2019 6/10](https://carcasefile.com/vehicles/subaru-outback-2015-2019/)
- [Subaru WRX 2015–2021 5/10](https://carcasefile.com/vehicles/subaru-wrx-2015-2021/)

Spot an error in this case file?

Wrong cost, a fault we missed, or a part number that doesn't fit. Tell us and we'll fix it. See our [verification methodology](https://carcasefile.com/methodology/) and [corrections policy](https://carcasefile.com/disclaimer/).

Reviewed CarCaseFile editorial · filed 2026-06-27 · updated 2026-08-30

Cost figures are independent-shop estimates and vary by region and condition. Always confirm a diagnosis before authorizing repairs.