Audi A6 — the 14 years we've written up
2010–2024, side by side: what goes wrong on each, what the fix costs, and what they typically ask. 11 of the 14 carry a high-severity issue.
What this page is
These are the 14 Audi A6 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 A6 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
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Phantom braking — the car stopping hard for something that is not there — $0–$900 for a software update or a radar and camera recalibration
Water reaching the gateway computer and killing all power on the move — $900–$1,800 for the module plus coding, more if the harness is corroded
Dashboard top bubbling and warping near the windshield — $1,500–$3,000
Digital instrument cluster can go black while you are driving (recall) — $0 with the recall — verify it was performed; $1,500–$2,800 if the cluster itself has failed and needs replacing and coding
Water gets into the passenger footwell and corrodes the wiring and control modules — $1,500–$5,000 depending on how much harness and how many modules are wet
48-volt starter generator fails and takes the whole car down while you are driving — $0 with the recall — verify it was performed; $2,200–$4,500 for a starter generator paid for out of pocket
Electric power steering unit failure ('steering fault' warning) — $1,500–$2,600
Supercharger coupler and cooling system failures — $1,500-$4,000
Water pump and thermostat housing leak coolant onto a hot engine — $900–$2,200
Fuel line can weaken at a compression point and leak — recall, and owners still smell gas — $0 with the recall — verify it was performed; $400–$1,100 for a fuel line replaced outside it
Passenger seat sensor stops recognising a person and disables the airbag (recalls 15V823000 and 18V370000) — $0 with the recall — verify it was performed; $700–$1,500 for the sensor mat outside the campaigns
After-run coolant pump can block or short and start a fire (recalls 17V002000 and 18V229000) — $0 with the recall — verify it was performed; $600–$1,100 if a pump fails again afterwards
Takata passenger airbag inflator — three campaigns, split by registration state (16V382000, 18V427000, 18V004000) — $0 with the recall — verify it was performed
Takata passenger airbag inflator can rupture and throw metal (recalls 16V382000, 18V427000, 18V004000) — $0 with the recall — verify it was performed
3 of these 14 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 A6 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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