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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 (382 Hp) Mild Hybrid Steptronic reaches a top speed of 210 km/h and is 4775 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 4775 mm long, 1852 mm wide, 1387 mm tall, with a 2851 mm wheelbase.

Advanced Specs

Overview

Generation BMW 4 Series Convertible G23
Year 2020–2024
Platform BMW CLAR
Variant M440i (382 Hp) Mild Hybrid Steptronic
Body type cabriolet
Engine type Mild Hybrid
Fuel type Petrol
Seats 4
Doors 2

Power & torque

Power 382 HP
Power @ min rpm 5800 rpm
Power @ max rpm 6500 rpm
Torque 500 Nm
Torque @ min rpm 1800 rpm
Torque @ max rpm 5000 rpm

Performance

Top speed 210 km/h
0–60 mph 5.0 s

Engine

Engine code B58B30O1
Displacement 2998 cc
Cylinders 6
Configuration inline
Compression ratio 10.2
Valves per cylinder 4
Injection system Direct Injection
Aspiration Twin Power Turbo Intercooler
Oil capacity 6.5 L
Coolant 10.5 L
Engine layout Front Longitudinal
Engine systems Start Stop System

Drivetrain & transmission

Drive Rear Wheel Drive
Powertrain architecture Mhev Mild Hybrid Electric Vehicle Power Assist Hybrid Battery Assisted Hybrid Vehicles Bahv
Drivetrain architecture The Internal Combustion Engine Ice And Electric Motor Drive The Rear 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 4775 mm
Width 1852 mm
Height 1387 mm
Wheelbase 2851 mm
Front track 1582 mm
Rear track 1593 mm
Boot space 300 – 385 L
Ground clearance 127 mm
Turning circle 11.4 m

Mass

Kerb weight 1892 kg
Max weight 2300 kg
Max load 408 kg

Consumption & emissions

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 R18; 225/40 R19Rear wheel tires: 225/45 R18; 225/40 R19; 255/35 R19
Wheel rims Front wheel rims: 7.5J x 18; 8J x 19Rear wheel rims: 7.5J x 18; 8J x 19; 8.5J x 19
Assisting systems Abs Anti Lock Braking System

Efficiency ratios

Weight-to-power 5 kg/Hp, 201.9 Hp/tonne
Weight-to-torque 3.8 kg/Nm, 264.3 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
Width Including Mirrors 2081
Front Overhang 863
Rear Overhang 1061

Performance

Engine speed (1k/rpm)

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

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