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What 20 owners told NHTSA about the 2014 Audi S6

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (20)Crash / fire / injury (2)Engine (14)Fuel system (3)Suspension (3)Steering (2)Transmission & drivetrain (2)Driver assistance (1)Electrical system (1)Engine & cooling (1)Lights (1)

1 of 20 complaints match · Driver assistance · clear filters

Jun 7, 2022SuspensionDriver assistance

While driving, received notification of a suspension fault. Was able to drive vehicle home, and found code for suspension C104600. Cleared code, and didn't see it return. Car sat a few days, and next time it was driven, received cascade of MIL warnings for suspension auto leveling failure, auto leveling headlights, adaptive cruise, lane keeping, and auto braking. Console advised to keep speed below 35 MPH. Had to quickly exit the road as result. Limped vehicle home on side roads, found codes across multiple systems. Suspension would not raise, and all coda would immediately return upon clearing. Vehicle was evaluated by local shop, and diagnostics show failed suspension air compressor and relay.

NHTSA ODI 11468065

Working with the data? Download all 20 complaints as CSV · fetched from NHTSA July 20, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2014 Audi S6 verdict →