BMW Z4 M40i G29 2022 Portimao Blue technical data





The key facts and figures for the BMW Z4 M40i Roadster at a glance:

  • Engine, consumption and CO2 emissions
  • Performance data such as displacement, kW/hp, torque and acceleration
  • Weight, dimensions, wheel and tyre sizes
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Unladen weight EU in kg 1,630
Max. permissible weight in kg 1,860
Permitted load in kg 305
Permitted axle load front/rear in kg 865/995
Luggage capacity in l 281
Trailer load (unbraked) in kg -
Trailer load 12% (braked) in kg -
Trailer load 8% (braked) in kg -


Cylinders/valves 6/4
Capacity in ccm 2,998
Stroke/bore in mm 94.6/82.0
Engine power in kW (hp) at 1/min 250 (340)/5,000-6,500
Engine torque (Nm) at 1/min 500/1,600-4,500
Compression ratio : 1 11.0


Top speed in km/h 250
Acceleration 0–100 km/h in s 4.5

Fuel consumption

Combined in l/100 km 8.0-7.8
CO2 combined emissions in g/km 182-177
Tank capacity, approx. in l 52


Tyre dimensions front 255/40 ZR18 95 Y
Tyre dimensions rear 275/40 ZR18 99 Y
Wheel dimensions and material front 9 J x 18 inches, light-alloy
Wheel dimensions and material rear 10 J x 18 inches, light-alloy
BMW wheels and tyres EU tyre label close-up


We subject the tyres for our vehicles to stringent tests with up to 50 different quality criteria – significantly more than prescribed by the uniform tyre labelling regulation that applies throughout Europe. This is where you will find all the information on the properties of the tyres used at BMW.

Fuel consumption and CO2 emissions.

BMW Z4 M40i Roadster:
Fuel consumption, combined WLTP in l/100 km: 8.1–7.9
CO2 emissions, combined WLTP in g/km: 184–179

The figures for performance, consumption and CO2 emissions refer to vehicles with standard transmission.

[1] Performance data of petrol engines apply to vehicles using RON 98 fuel. Fuel consumption data apply to vehicles using reference fuels in accordance with EU Regulation 715/2007. Unleaded RON 91 and higher with a maximum ethanol content of 10% (E10) may also be used. BMW recommends RON 95 fuel. For high-performance automobiles, BMW recommends RON 98 fuel.

[2] Official data for fuel consumption, CO2 emissions, power consumption and electric range was determined in accordance with the prescribed measuring procedure and corresponds to European Regulation (EC) 715/2007 in the applicable version. For ranges, data determined as per WLTP takes into account any optional equipment (available on the German market in this case). For vehicles that have been newly type approved since 1 January 2021, only the official data according to WLTP exists. In addition, NEDC values are deleted from the certificates of conformity as of 1 January 2023 by EC regulation 2022/195.

For more information about NEDC and WLTP measuring procedures visit

Further information about fuel consumption and official model-specific CO2 emissions of new passenger cars can be found in the "Guideline for fuel consumption, CO2 emissions and electric power consumption for new passenger cars", available free of charge at all points of sale, at the Deutsche Automobil Treuhand GmbH (DAT), Hellmuth-Hirth-Str. 1, 73760 Ostfildern-Scharnhausen, Germany, and under

 The EC unladen weight refers to a vehicle with standard equipment and does not include any optional extras. The unladen weight includes a 90% full tank and a driver weight of 75 kg. Optional equipment may affect the weight of the vehicle, the payload and the top speed if the selected equipment has an impact on the vehicle's aerodynamics.

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Fuel consumption and CO2 emissions.

  • BMW Z4 M40i Roadster (1):
    Fuel consumption in l/100 km (combined): 8.0–7.8
    CO2 emissions in g/km (combined): 182–177

    (1)Values are preliminary

    Official figures for fuel consumption, CO2 emissions, electricity consumption and electric range were determined in accordance with the prescribed measurement procedure and comply with Regulation (EU) 715/2007 as amended. WLTP figures take into account any optional equipment in the case of ranges. or newly type-tested vehicles since 01.01.2021, the official data no longer exist according to NEDC, but only according to WLTP. For more information on the WLTP and NEDC measurement procedures, see