BMW X6 M CompetitionvsBMW Z4 M40i
BMW Z4 M40i leads in City MPG (23 vs 13) and Highway MPG (29 vs 18) and 3 more.
Fuel Economy
13
City MPG
23
18
Highway MPG
29
15
Combined MPG
25
Engine & Drivetrain
8
Cylinders
6
4
Engine Displacement
3
AWD
Drive Type
RWD
Automatic
Transmission
Automatic
Premium Gasoline
Fuel Type
Premium Gasoline
Emissions & Cost
589
CO₂ Emissions
346
4,600
Annual Fuel Cost
2,750
Standard Sport Utility Vehicle 4WD
Vehicle Class
Two Seaters
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Data sourced from EPA Fuel Economy Data (Public Domain (U.S. Government)).