Z4 M40i
A turbocharged straight-six, an open roof and two seats.
2020 US launch specification · automatic · Factory source
Every figure, in one place.
Performance
- Power
- 387 PS · 382 hp · 285 kW
- Torque
- 500 Nm
- 0–100 km/h
- 4.4 s
- Top speed
- 250 km/h · limited
- Power-to-weight
- 3.97 kg/PS
Engine and drivetrain
- Engine
- B58 · Inline-six
- Displacement
- 2,998 cm³
- Induction
- Twin-scroll turbo
- Gearbox
- 8-speed automatic / 6-speed manual
- Drivetrain
- Rear-wheel drive
- Powertrain
- Petrol
Body and dimensions
- Production
- 2019–present
- Body
- Convertible
- Length
- 4,324 mm
- Width
- 1,864 mm
- Height
- 1,304 mm
- Wheelbase
- 2,470 mm
- Kerb weight
- 1,535 kg
- Fuel tank
- 52 L
Where this car ranks across all 93 cars in the catalogue.
Know before you buy
- Robust engine; check for coolant leaks at the expansion tank
- Oil filter housing gasket seepage with age
- Keep software and transmission adaptations current
Commonly reported ownership points, not a guarantee of faults. Always get an independent inspection.
Two seats and a straight-six.
The G29 Z4 M40i brings the B58 to an open two-seat roadster. The selected US specification differs from the European launch rating, so the market stays attached to its output.
Open-air straight-six driving.
A two-seat cabin needs to match your actual passenger needs.
The same Z4 M40i name can carry different factory outputs by market.
B58 · Inline-six
B58 straight-six engine-family reference. Covers, revisions and vehicle installations differ.
B58 · Petrol
The US-market G29 Z4 M40i uses a turbocharged 3.0-litre straight-six rated at 382 hp and 369 lb-ft. European launch output differs from this selected US specification.
One turbocharger
One exhaust-driven turbocharger compresses the intake air. Charge-air cooling then reduces the temperature before the air reaches the cylinders.
Rear-wheel drive
The launch model pairs rear-wheel drive with an eight-speed Sport automatic transmission. Later manual-transmission offerings are separate specifications. The M40i is an M Performance roadster.
2020 US launch specification · automatic
Power and torque above describe engine output for this specific factory specification. PS means metric horsepower; hp is used for US-rated output. Other model years and markets can differ. Open the BMW factory source for the original specification.
The full specification.
Ownership and buying
- Buying tips
- A two-seat cabin needs to match your actual passenger needs.
- Maintenance notes
- Match the engine code and VIN to the correct BMW service schedule. Ask for dated maintenance records and an independent inspection before buying.
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Photo credits
- BMW Z4 M40i (G29) front.jpg — Tokumeigakarinoaoshima · CC BY-SA 4.0 · Original