Comparisons · 2015

2015 BMW Z4 Sdrive28i vs 2015 Porsche 911 GT3

The 2015 BMW Z4 Sdrive28i uses less fuel: 9.1 against 13.8 l/100km, about 34% less. At today's US fuel prices the 2015 BMW Z4 Sdrive28i costs about $2,400 less to fuel over five years at 15,000 km a year.

2015 BMW Z4 Sdrive28i leads on 3 of 3 measurable figures. 18 specifications compared.

BMW2015 BMW Z4 Sdrive28iFull specifications →vsPorsche2015 Porsche 911 GT3Full specifications →

Key figures

Combined fuel consumption
2015 BMW Z4 Sdrive28i9.1 l/100km
2015 Porsche 911 GT313.8 l/100km
CO2 emissions
2015 BMW Z4 Sdrive28i211.3 g/km
2015 Porsche 911 GT3327.5 g/km
Kerb weight
2015 BMW Z4 Sdrive28i1,585 kg
2015 Porsche 911 GT31,595 kg
Owner complaints
2015 BMW Z4 Sdrive28i5
2015 Porsche 911 GT38

Side by side

The better figure is highlighted where one is clearly better.

Specification2015 BMW Z4 Sdrive28i2015 Porsche 911 GT3
CO2211.3 g/km327.5 g/km
Combined9.1 l/100km13.8 l/100km
Complaints58
Cylinders46
Displacement3,000 cc3,800 cc
DriveRear-Wheel DriveRear-Wheel Drive
Emission standardL2L2
Extra-urban7.1 l/100km11.8 l/100km
FuelPremium GasolineSingle Fuel
Gears77
Gross weight1,895.1 kg2,045.2 kg
Height1,290 mm1,300 mm
Kerb weight1,585 kg1,595 kg
Length4,240 mm4,510 mm
TransmissionManual 6-spdAutomatic (AM-S7)
Urban10.7 l/100km15.7 l/100km
Wheelbase2,500 mm2,450 mm
Width1,790 mm1,880 mm

More on these cars

2015 BMW Z4 Sdrive28iAll BMW model years2015 Porsche 911 GT3All Porsche model years

How this comparison works

Only genuine rivals are compared: same model year, same EPA size class, same drivetrain, similar weight and power, and both mainstream or both premium brands. Figures come from FuelEconomy.gov, EPA and NHTSA; fuel costs use current US prices from the Energy Information Administration.

Compare them yourself

Fuel savings and break-evenBreak-even distance for a more economical vehicle · Fuel price at which two vehicles cost the same · Running cost per 100 kmPower-to-weightPower-to-weight ratio · Torque-to-weight ratio · Power needed for a target ratioTotal cost of ownershipTotal cost of ownership · Yearly depreciation rate · Projected future valueAcceleration and quarter-mileForce and power for a target acceleration · Theoretical best 0–100 km/h time · Quarter-mile time and trap speed

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