Audi A8 quattrovsPorsche Cayenne S Coupe
Audi A8 quattro leads in City MPG (19 vs 16) and Highway MPG (27 vs 21) and 3 more.
Fuel Economy
19
City MPG
16
27
Highway MPG
21
22
Combined MPG
18
Engine & Drivetrain
6
Cylinders
8
3
Engine Displacement
4
AWD
Drive Type
AWD
Automatic
Transmission
Automatic
Premium Gasoline
Fuel Type
Premium Gasoline
Emissions & Cost
414
CO₂ Emissions
492
3,150
Annual Fuel Cost
3,850
Large Cars
Vehicle Class
Standard Sport Utility Vehicle 4WD
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Data sourced from EPA Fuel Economy Data (Public Domain (U.S. Government)).