Subaru Outback 2015–2019Common problems, reliability & repair costs

Symptoms: Shudder or chugging under light acceleration around 20–40 mph, worst when cold; hesitation or delayed engagement from a stop; whining; in full failures, slipping or a car that won't move. Often the torque converter or valve body rather than the belt-and-pulley core.

Fix: Torque-converter replacement with fluid runs roughly $1,800–$3,500 at an independent shop; a full CVT replacement (most shops install a reman or used unit rather than rebuild) runs $4,000–$8,000. Subaru extended CVT coverage to 10 years/100,000 miles on 2010–2015 Legacy/Outback (announced 2017 — now expired for every 2015) and separately on 2019–2020 models (still live on many 2019s). 2016–2018 cars received no extension.

Sources: CarComplaints — Subaru CVT warranty extension to 10yr/100k, Forbes — Subaru extends warranties on 1.5M CVTs, Subaru Outback Forums — CVT warranty extension threads

Symptoms: Screen freezes or reboots on its own, unresponsive touch controls, Bluetooth that won't pair or hold, radio stuck at full volume, backup camera showing a black screen in reverse, bubbles forming under the touchscreen glass on early units.

Fix: Software updates fix some behavior; hardware faults mean a replacement head unit — roughly $250–$600 for a used/refurb unit installed, up to $1,500 for a new dealer unit. Subaru recalled 2018 Legacy/Outback/BRZ (WTZ-85, January 2019) because the head unit booted too slowly to show the backup camera, and the Gen 3 Starlink unit was the subject of a $6.25M class-action settlement (Udeen v. Subaru).

Sources: CarComplaints — Subaru Outback (electrical/interior complaint volume), National Trial Lawyers — $6.25M Starlink settlement, Subaru Outback Forums — head-unit freeze reports

Symptoms: Battery goes flat after the car sits a few days, or dies repeatedly despite testing fine; no-start mornings; multiple battery replacements in short succession. Root cause reported as the telematics/CAN system failing to fully sleep and drawing current with the car off.

Fix: A new battery alone ($150–$300 installed) treats the symptom. A shop parasitic-draw test plus addressing the DCM/CAN draw (software update, module repair, or an upgraded battery) covers the rest. This was litigated: the In re Subaru Battery Drain class action settled with extended battery coverage and reimbursement for 2015–2020 Outbacks, though the claim window has closed.

Sources: Subaru Battery Drain settlement site, Top Class Actions — Subaru battery drain settlement, CarComplaints — 2015 Outback battery/electrical complaints

Symptoms: Cracks that start small — frequently at the base of the glass near the black perimeter band or the wiper de-icer strip — and spread across the windshield, sometimes with no obvious impact. CarComplaints lists it as the #1 reported 2015 Outback problem.

Fix: Windshield replacement. Budget $400–$700 for the glass on a non-EyeSight car and $700–$1,100 with OEM acoustic glass plus the EyeSight camera recalibration many shops require after replacement. Subaru's TSB 12-192-15R acknowledged the issue on 2015–2016 Outback/Legacy, and a class-action settlement reimbursed qualifying 2015–2016 owners (window now closed).

Sources: CarComplaints — 2015 Outback windshield (top complaint), Subaru Windshield Settlement (2015–2016 Outback/Legacy), Top Class Actions — Subaru windshield defect settlement

Symptoms: Needing to add oil between changes; low-oil light between services. Subaru's own old benchmark treated a quart per 1,200 miles as the edge of normal — anything worse is a problem. The FB25 was substantially redesigned for 2015 (pistons, rings, head) and complaint volume dropped, but some cars still burn oil.

Fix: Start cheap: a stuck PCV valve (a ~$25 part) can cause dramatic consumption — replace it and re-test. Run a documented oil-consumption test. Worst case on a genuine burner is piston rings or a short block, $2,500–$4,000 at an independent shop. Most 2015+ cars never get there.

Sources: Subaru Outback Forums — FB engine oil-burning megathread, 8020 Automotive — common Subaru FB25 problems

Tools: 10mm wrench or socket, Battery terminal brush, Memory saver (optional but keeps radio/window settings)

1. With the car off, disconnect the negative terminal first, then the positive, then the hold-down bracket.
2. Lift the old battery out (it sits right up front — one of the easiest battery bays in the business) and clean both terminal clamps with the brush.
3. Install the new battery — many owners upsize to a higher-capacity or AGM battery specifically because of this generation's parasitic-drain history.
4. Reconnect positive first, then negative; torque the hold-down snug, not gorilla-tight.
5. If this is your second or third battery, have a shop run a parasitic-draw test — a new battery won't fix a DCM/CAN system that never sleeps.

Tools: None (hands only for both filters)

1. Open the glovebox, squeeze the sides to release the stops, and let it swing down to expose the cabin filter door.
2. Slide out the old cabin filter and insert the new one with the airflow arrow pointing the correct direction (down).
3. For the engine filter, release the metal clips on the airbox lid in the engine bay, swap the panel filter, and re-clip.
4. Confirm the airbox lid is fully seated — a bad seal lets unfiltered air past the MAF sensor.

Tools: Floor jack + jack stands, Socket set (14mm/17mm) and breaker bar, C-clamp or caliper piston tool, Torque wrench, Brake cleaner and high-temp caliper grease

1. Loosen the front lug nuts, jack the car, set it on stands, and remove the wheels.
2. Remove the two caliper slide bolts, hang the caliper with a hook (never by the hose), and slide out the old pads.
3. Unbolt the caliper bracket, pull the old rotor (a mallet tap breaks rust bonds), and clean the hub face.
4. Install the new rotor (wipe off its oil coating with brake cleaner), reinstall the bracket, and compress the caliper piston.
5. Fit new pads with greased slide pins and shims, reinstall the caliper, and torque everything to spec.
6. Pump the brake pedal firm before moving, then bed the pads with a series of moderate stops from 35 mph.