Audi A8 quattrovsGMC Sierra 4WD
Audi A8 quattro leads in City MPG (19 vs 17) and Highway MPG (27 vs 20) and 3 more.
Fuel Economy
19
City MPG
17
27
Highway MPG
20
22
Combined MPG
18
Engine & Drivetrain
6
Cylinders
4
3
Engine Displacement
3
AWD
Drive Type
4WD
Automatic
Transmission
Automatic
Premium Gasoline
Fuel Type
Regular Gasoline
Emissions & Cost
414
CO₂ Emissions
491
3,150
Annual Fuel Cost
3,300
Large Cars
Vehicle Class
Standard Pickup Trucks 4WD
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Data sourced from EPA Fuel Economy Data (Public Domain (U.S. Government)).