Shop-floor honest · generation by generation
The complete file on your car.
What breaks, what it really costs to fix, how to do it yourself, and which viral "hacks" are nonsense — all in one place, for your exact car and year. No fear-marketing, no dealer upsell.
Buy
Should you buy this generation used? Best years, years to avoid, and a pre-purchase inspection checklist.
Own
Every common problem with real repair-cost ranges — what breaks, when, and what an honest shop charges.
Fix
Step-by-step DIY repairs with exact parts lists and what each job saves you over the shop.
Debunk
The viral "$2 fixes anything" hacks, rated against what actually happens inside your engine.
Newest car case files
All cars →-
Audi
A4 B8 / B8.5
2009–2016
The B8 A4 is a great-driving, sharp-looking compact luxury sedan that hides expensive engine maintenance. The early 2.0 TFSI (engine code CAEB, roughly 2009–2011.5) burns oil because of weak piston rings — the subject of a class-action settlement and extended warranty. Add a known timing-chain-tensioner weakness, direct-injection carbon buildup, and a plastic water pump, and you have a car that's cheap to buy and pricey to keep. The B8.5 (2013–2016) fixed the worst of it.
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BMW
3 Series 5th gen (E90/E91/E92/E93)
2006–2011
The E90-generation 3 Series is a brilliant car to drive and a maintenance bill waiting to happen. Two very different ownership stories live here: the naturally aspirated 328i (N52) is the sensible used buy — its problems are oil leaks and an electric water pump, not engine death. The turbocharged 335i (N54) is faster and far riskier, with a documented high-pressure fuel pump failure that triggered a massive recall, plus wastegate rattle and turbo wear. Buy the 328i for reliability, the 335i only with eyes open and a maintenance fund.
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BMW
5 Series 6th gen (F10)
2011–2017
The F10 5 Series is a genuinely great car to drive and own — when the right one is bought and maintained on a BMW schedule, not a Toyota one. The headaches are engine-specific: the N20 four can chew through plastic timing chain guides, the N63 V8 drinks oil and needs valve stem seals, and every engine in the range leaks oil from the filter housing and valve cover while the electric water pump quietly counts down to failure. None of it is mysterious. All of it is expensive if you ignore it.
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Chevrolet
Cruze 1st gen
2011–2015
The first-gen Cruze is a comfortable, well-priced compact that GM never fully sorted under the hood. The 1.4L turbo is the heart of the problem: coolant leaks from the water pump, thermostat housing, and turbo lines are so common owners call it 'a way of life,' and the PCV system built into the valve cover and intake manifold fails in a way that ruins idle and burns oil. Buy one with eyes open, a documented water-pump fix, and a budget for cooling work.
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Chevrolet
Equinox 2nd gen
2010–2017
The 2nd-gen Equinox is a roomy, comfortable, affordable used SUV with one serious catch: the 2.4L Ecotec four-cylinder burns oil. Worn piston rings let early 2010–2013 engines drink a quart every 1,000–2,000 miles, which starves the engine and can wreck timing chains and bearings — a defect GM eventually settled in a class action with free piston replacements. The 3.0L and 3.6L V6 cars sidestep that issue but cost more to feed.
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Chevrolet
Impala 10th gen
2014–2020
The last real Impala is a genuinely good large sedan — quiet, roomy, and comfortable — and the smartest used buy in its class if you pick the right engine. The 3.6L V6 (LFX) is the one to get and is largely trouble-free. The base 2.5L four-cylinder is the weak link, prone to creeping oil consumption. Early 2014–2015 cars also carried a string of recalls (parking brake, power steering) you'll want to confirm were closed out.
Viral car myths, diagnosed
"$1 liquid stops engine wear forever." "Banned in 11 states." We rate the clickbait against shop-floor reality.
- MISLEADING
Is the "$1 Japanese oil trick" that stops engine wear forever real?
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.
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.
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.
Why we exist
Car info online is either thin AI spam or fear-bait built to sell you something. We compile the real failure modes, real costs, and real fixes for each generation — and cite where they come from.
How we build a file
Each car file is compiled from documented failure data — NHTSA complaints and recalls, technical service bulletins, and owner reports — then checked against shop-floor experience. Our method.
How we make money
Affiliate commissions on parts we'd actually use for the repair — never on the snake-oil we review. Every commercial link is disclosed, and a verdict never changes because we earn from it. Full disclosure.