Audi A4 — the 15 years we've written up
2010–2024, side by side: what goes wrong on each, what the fix costs, and what they typically ask. 13 of the 15 carry a high-severity issue.
What this page is
These are the 15 Audi A4 model years Kestrel has done the homework on — not every year Audi built one. A year that isn't listed here isn't a year we're warning you off; it's one we haven't written up yet. Ranking a whole model run would mean telling you about years we've never looked at.
Audi A4 by year
How many owner complaints NHTSA holds. A big number usually means a lot were sold; the shape matters more than the total.
Year by year
Looking for a particular engine or trim?
MMI screen reboots — the 2020 A4's biggest complaint runs on the same hardware — $0–$300 for a software update; $1,500–$3,500 for a main unit out of warranty
Car shuts itself off while driving — twice at highway speed in a seven-complaint record — $0–$400 for a battery or a software update under warranty; $1,200–$2,500 for a belt starter-generator or a control module out of warranty
Stop-start cutting the engine before the car has stopped, and one stall at highway speed — $0–$400 for a stop-start software update at a dealer; $600–$1,800 for stall diagnosis and a sensor or fuel delivery repair
Rear axle lock nuts can break and throw the rear axle out of alignment (two recalls) — $0 with the recall — verify it was performed
MMI screen reboots itself repeatedly while driving — backup camera and sensors go dark with it — $0–$300 for the software update; $1,500–$3,500 if the MMI main unit is replaced
Passenger airbag can switch itself off — seat heater cable damages the occupant sensor wiring (recall) — $0 with the recall — verify it was performed
Passenger airbag disabled by a damaged occupant-detection cable under the seat heater (recall) — $0 with the recall — verify it was performed
Passenger airbag switches itself off — seat heater cable damages the occupant sensor wiring (recall) — $0 with the recall — verify it was performed
Electric power steering locks up at speed with a 'steering defective, do not drive' warning — $1,500–$3,800 for a steering rack; $150–$400 for boots if caught early
After-run coolant pump can overheat and catch fire — recalled, with owners waiting months for the part — $0 with the recall — verify it was performed; $400–$800 for the pump out of pocket
Excessive oil consumption (EA888 Gen 2) — $4,000-$7,000
Electric power steering goes stiff or shuts off while driving — the rack is the repair — $1,500–$3,800 for a steering rack
Piston-ring oil consumption — smoke, oil out the tailpipe, and dealer quotes in five figures — $3,500–$6,000 for pistons and rings; $5,000–$8,000 for a replacement engine
Oil consumption from bad piston rings — a quart every 500–900 miles on the 2.0T — $3,500–$6,000 for pistons and rings; $5,000–$8,000 for a replacement engine
2.0T burns a quart of oil every 300–1,000 miles — piston rings, a class action, and no dipstick to warn you — $3,500–$6,000 for pistons and rings; $5,000–$8,000 for a replacement engine
2 of these 15 have no high-severity issue in our write-up. That means we didn't find an expensive recurring fault — not that one cannot exist on the specific vehicle you're looking at.
Looking at one in particular?
This page covers the Audi A4 in general. The Kestrel report covers the one you're looking at — the asking price against the market, the photos, the seller's description, and a BUY / NEGOTIATE / WALK AWAY verdict with a negotiation script.
Get My Verdict — $7.99Not ready to pay for one? The free read is instant and needs no card — it checks the asking price against the market and names the top issues for that year.
Known issues are based on documented owner reports, NHTSA complaints, class-action records, and manufacturer technical service bulletins. Individual vehicles vary. A pre-purchase inspection by a trusted mechanic is always worth doing.
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