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BMW 4 Series G23 (2020–2024) Specs

Specifications, engines, dimensions and technical data.

Gen 2 2020 - 2025 G23 Cabriolet
BMW 4 Series
Engine —
Power —
Fuel —
Gears —
Platform —

Body Style



BMW 4 Series G23 overview

The BMW 4 Series (G23) is the 2nd generation of the 4 Series, built from 2020 to 2024. It is offered as a Cabriolet with 9 engines (petrol, diesel), from 170 HP to 382 HP. The M440i (374 Hp) Mild Hybrid xDrive Steptronic accelerates from 0 to 100 km/h in 4.9 s, reaches a top speed of 250 km/h and is 4770 mm long.

How much horsepower does the BMW 4 Series have?

The BMW 4 Series (G23) has 170 HP to 382 HP, depending on the engine: 2.0 B48 (170 HP), 2.0 N20 (184 HP), 2.0 B47 (190 HP), 2.0 B48 (245 HP), 2.0 B48 (258 HP), 3.0 B57 (286 HP), 3.0 B57 (340 HP), 3.0 B58 (374 HP), 3.0 B58 (382 HP).

What engines are available for the BMW 4 Series?

The BMW 4 Series is available with 9 engines: 2.0 B48 (170 HP, petrol), 2.0 N20 (184 HP, petrol), 2.0 B47 (190 HP, diesel), 2.0 B48 (245 HP, petrol), 2.0 B48 (258 HP, petrol), 3.0 B57 (286 HP, diesel), 3.0 B57 (340 HP, diesel), 3.0 B58 (374 HP, petrol), 3.0 B58 (382 HP, petrol).

What are the dimensions of the BMW 4 Series?

The BMW 4 Series is 4770 mm long, 1852 mm wide, 1394 mm tall, with a 2851 mm wheelbase.

How fast is the BMW 4 Series?

The BMW 4 Series M440i (374 Hp) Mild Hybrid xDrive Steptronic goes from 0 to 100 km/h in 4.9 s and has a top speed of 250 km/h.

Advanced Specs

Overview

Generation BMW 4 Series Convertible G23
Year 2020–2024
Platform BMW CLAR
Variant M440i (374 Hp) Mild Hybrid xDrive Steptronic
Body type cabriolet
Engine type Mild Hybrid
Fuel type Petrol
Seats 4
Doors 2
Emission standard Euro 6d

Power & torque

Power 374 HP
Power @ min rpm 5500 rpm
Power @ max rpm 6500 rpm
Torque 500 Nm
Torque @ min rpm 1900 rpm
Torque @ max rpm 5000 rpm

Performance

Top speed 250 km/h
0–100 km/h 4.9 s
0–62 mph 4.9 s

Engine

Engine code B58B30B
Displacement 2998 cc
Cylinders 6
Configuration inline
Bore 82.0 mm
Stroke 94.6 mm
Compression ratio 10.2
Valves per cylinder 4
Injection system Direct Injection
Aspiration Twin Power Turbo Intercooler
Valvetrain Valvetronic Double Vanos
Oil capacity 6.5 L
Engine layout Front Longitudinal
Engine systems Start Stop Systemparticulate Filter

Drivetrain & transmission

Drive All wheel drive (4x4)
Powertrain architecture Mhev Mild Hybrid Electric Vehicle Power Assist Hybrid Battery Assisted Hybrid Vehicles Bahv
Drivetrain architecture The Internal Combustion Engine Ice And The Electric Motor Permanently Drive The Four Wheels Of The Car With The Ability To Work Only In Mixed Mode
Gearbox type Torque Converter
Gears 8
Gearbox code 8hp51
Gearbox manufacturer zf

Dimensions

Length 4770 mm
Width 1852 mm
Height 1394 mm
Wheelbase 2851 mm
Front track 1575 mm
Rear track 1611 mm
Boot space 300 – 385 L
Ground clearance 126 mm
Turning circle 12.0 m

Mass

Kerb weight 1890 kg
Max weight 2390 kg
Max load 500 kg

Consumption & emissions

Fuel combined (WLTP) 7.8 L/100km
Fuel combined (NEDC) 6.9 L/100km
CO₂ (WLTP) 177 g/km
CO₂ (NEDC) 159 g/km
Fuel tank 59.0 L

Chassis & brakes

Front suspension Spring Strut Transverse Stabilizer
Rear suspension Independent Multi Link Spring Suspension With Stabilizer
Front brakes Ventilated Discs
Rear brakes Ventilated Discs
Steering type Steering Rack And Pinion
Power steering Electric Steering
Tire size Front wheel tires: 225/45 R18Rear wheel tires: 255/40 R18 99
Wheel rims Front wheel rims: 7.5J x 18Rear wheel rims: 8.5J x 18
Assisting systems Abs Anti Lock Braking System

Efficiency ratios

Weight-to-power 5.1 kg/Hp, 197.9 Hp/tonne
Weight-to-torque 3.8 kg/Nm, 264.6 Nm/tonne

Electric / hybrid

Battery capacity (gross) 0.4 kWh
Electric motor power 11 HP
Electric motor torque 25 Nm

Other

Start Of Production 2020
End Of Production 2024

Performance

Engine speed (1k/rpm)

Figures from catalog data; real-world values may differ.

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