Audi A6 SedanvsGMC Sierra 4WD AT4X
Audi A6 Sedan leads in City MPG (20 vs 14) and Highway MPG (29 vs 16) and 3 more.
Fuel Economy
20
City MPG
14
29
Highway MPG
16
23
Combined MPG
15
Engine & Drivetrain
6
Cylinders
8
3
Engine Displacement
6
AWD
Drive Type
4WD
Automatic
Transmission
Automatic
Premium Gasoline
Fuel Type
Premium Gasoline
Emissions & Cost
387
CO₂ Emissions
601
3,000
Annual Fuel Cost
4,600
Midsize Cars
Vehicle Class
Standard Pickup Trucks 4WD
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Data sourced from EPA Fuel Economy Data (Public Domain (U.S. Government)).