Audi S8vsGMC Sierra 4WD with Sport Mode
GMC Sierra 4WD with Sport Mode leads in City MPG (17 vs 15) and Annual Fuel Cost (3,500 vs 3,850), while Audi S8 leads in Highway MPG (24 vs 18) and Combined MPG (18 vs 17) and 1 more.
Fuel Economy
15
City MPG
17
24
Highway MPG
18
18
Combined MPG
17
Engine & Drivetrain
8
Cylinders
4
4
Engine Displacement
3
AWD
Drive Type
4WD
Automatic
Transmission
Automatic
Premium Gasoline
Fuel Type
Regular Gasoline
Emissions & Cost
502
CO₂ Emissions
513
3,850
Annual Fuel Cost
3,500
Large Cars
Vehicle Class
Standard Pickup Trucks 4WD
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Data sourced from EPA Fuel Economy Data (Public Domain (U.S. Government)).