BMW 840i CoupevsMazda 3 4-Door 4WD
Mazda 3 4-Door 4WD leads in City MPG (26 vs 21) and Highway MPG (34 vs 29) and 3 more.
Fuel Economy
21
City MPG
26
29
Highway MPG
34
24
Combined MPG
29
Engine & Drivetrain
6
Cylinders
4
3
Engine Displacement
3
RWD
Drive Type
4WD
Automatic
Transmission
Automatic
Premium Gasoline
Fuel Type
Regular Gasoline
Emissions & Cost
368
CO₂ Emissions
306
2,900
Annual Fuel Cost
2,050
Subcompact Cars
Vehicle Class
Compact Cars
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Data sourced from EPA Fuel Economy Data (Public Domain (U.S. Government)).