Audi Q7 quattrovsBMW 840i Convertible
BMW 840i Convertible leads in City MPG (21 vs 18) and Highway MPG (29 vs 23) and 3 more.
Fuel Economy
18
City MPG
21
23
Highway MPG
29
20
Combined MPG
24
Engine & Drivetrain
6
Cylinders
6
3
Engine Displacement
3
AWD
Drive Type
RWD
Automatic
Transmission
Automatic
Premium Gasoline
Fuel Type
Premium Gasoline
Emissions & Cost
442
CO₂ Emissions
368
3,450
Annual Fuel Cost
2,900
Standard Sport Utility Vehicle 4WD
Vehicle Class
Subcompact Cars
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Data sourced from EPA Fuel Economy Data (Public Domain (U.S. Government)).