BMW 840i xDrive ConvertiblevsBMW X3 M50
BMW X3 M50 leads in City MPG (25 vs 21) and Highway MPG (30 vs 29) and 3 more.
Fuel Economy
21
City MPG
25
29
Highway MPG
30
24
Combined MPG
27
Engine & Drivetrain
6
Cylinders
6
3
Engine Displacement
3
AWD
Drive Type
AWD
Automatic
Transmission
Automatic
Premium Gasoline
Fuel Type
Premium Gasoline
Emissions & Cost
373
CO₂ Emissions
320
2,900
Annual Fuel Cost
2,550
Subcompact Cars
Vehicle Class
Small Sport Utility Vehicle 4WD
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Data sourced from EPA Fuel Economy Data (Public Domain (U.S. Government)).