2015 Audi A6 quattro

Sedan Diesel
Audi A6 quattro 2015
29MPG Combined
3 Trims
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Updated February 27, 2026

The 2015 Audi A6 quattro is a Sedan that delivers 21–29 combined MPG depending on trim. Here’s everything you need to know about this diesel-powered vehicle, from fuel economy to safety ratings.

2015 Audi A6 quattro Specifications

SpecValue
Combined MPG21–29 combined MPG depending on trim
City MPG24
Highway MPG38
Body StyleSedan
Fuel TypeDiesel
DriveAWD
Available Trims3

Available Trims

TrimMPG (City/Hwy/Combined)EngineTransmission
6 cyl24/38/293.0L 6cylAutomatic (S8)
4 cyl20/29/232.0L 4cylAutomatic (S8)
6 cyl18/27/213.0L 6cylAutomatic (S8)

Annual Fuel Cost

Based on EPA estimates, the 2015 Audi A6 quattro costs approximately $2,416 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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