Audi RS 6 AvantvsGMC Sierra 4WD
GMC Sierra 4WD leads in City MPG (17 vs 14) and Combined MPG (18 vs 16) and 2 more, while Audi RS 6 Avant leads in Highway MPG (21 vs 20).
Fuel Economy
14
City MPG
17
21
Highway MPG
20
16
Combined MPG
18
Engine & Drivetrain
8
Cylinders
4
4
Engine Displacement
3
AWD
Drive Type
4WD
Automatic
Transmission
Automatic
Premium Gasoline
Fuel Type
Regular Gasoline
Emissions & Cost
545
CO₂ Emissions
491
4,300
Annual Fuel Cost
3,300
Midsize Station Wagons
Vehicle Class
Standard Pickup Trucks 4WD
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Data sourced from EPA Fuel Economy Data (Public Domain (U.S. Government)).