This page covers 2 recalls, 11 owner complaints, NHTSA crash-test ratings and EPA fuel economy for the 2018 Audi A6.
28 mpg combined
8.4 L/100km
Midsize Cars
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted.
5/5 Overall
NHTSA 5-Star Safety Rating
For the 2018 Audi A6, engine cooling problems are the dominant theme across owner complaints. Multiple owners report water pump and thermostat failures at relatively low mileage, commonly in the 39,000–48,000 mile range, with symptoms including coolant leaks and warning lights pointing to the cooling system. Dealers confirmed the pump failures in several cases, with at least one noting the early failure was unexpected for the mileage involved. Parts availability has also come up, with one owner reporting that repair attempts were delayed because components weren't in stock. The fuel system draws a couple of complaints as well, including one report of a parked vehicle fire with the fire originating near the fuel tank area. The airbag category has a single complaint with no recurring pattern behind it. The cooling system failures, water pump and thermostat together, at lower-than-expected mileage, are the clearest repeated pattern owners describe.
11
Total Complaints
1
Fire-Related
By System
The 2018 Audi A6 has 2 recalls, the most serious being a fuel rail leak that can allow gasoline to escape near potential ignition sources, raising the risk of a fire.
The second recall affects the passenger seat's occupant detection system. A sensor mat inside the front passenger seat can wear or degrade over time, causing the detection module to malfunction. If this happens, the front passenger airbag may not deploy correctly in a crash, which can increase the risk of injury to that occupant. This recall applies to vehicles equipped with basic seats, with or without heating.
At a glance
What can fail
The left and right fuel rails may develop leaks, allowing fuel to escape.
What the fix does
Dealers will replace both the left and right fuel rails at no cost to you.
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Driver Assistance
Ratings from NHTSA's New Car Assessment Program (NCAP). Based on 2 tested variants; worst-case ratings shown.
Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The body-sensing mat in the front passenger seat may wear or stress over time, causing the passenger detection system to stop working properly.
What the fix does
Dealers will install a passenger detection system repair kit at no cost to restore proper function.
Summarized — see the official notice for exact wording, dates, and contacts.
