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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 430d (286 Hp) Mild Hybrid Steptronic accelerates from 0 to 100 km/h in 5.8 s, reaches a top speed of 250 km/h and is 4768 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 4768 mm long, 1852 mm wide, 1384 mm tall, with a 2851 mm wheelbase.

How fast is the BMW 4 Series?

The BMW 4 Series 430d (286 Hp) Mild Hybrid Steptronic goes from 0 to 100 km/h in 5.8 s and has a top speed of 250 km/h.

Advanced Specs

Overview

Generation BMW 4 Series Convertible G23
Year 2021–2024
Platform BMW CLAR
Variant 430d (286 Hp) Mild Hybrid Steptronic
Body type cabriolet
Engine type Mild Hybrid
Fuel type Diesel
Seats 4
Doors 2
Emission standard Euro 6d

Power & torque

Power 286 HP
Power @ max rpm 4000 rpm
Torque 650 Nm
Torque @ min rpm 1500 rpm
Torque @ max rpm 2500 rpm

Performance

Top speed 250 km/h
0–100 km/h 5.8 s
0–62 mph 5.8 s

Engine

Engine code B57D30B
Displacement 2993 cc
Cylinders 6
Configuration inline
Bore 84.0 mm
Stroke 90.0 mm
Compression ratio 16.5
Valves per cylinder 4
Injection system Diesel Commonrail
Aspiration Twin Power Turbo Intercooler
Valvetrain dohc
Oil capacity 7.0 L
Coolant 7.7 L
Engine layout Front Longitudinal
Engine systems Start Stop Systemparticulate Filter

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 4768 mm
Width 1852 mm
Height 1384 mm
Wheelbase 2851 mm
Front track 1573 mm
Rear track 1612 mm
Boot space 300 – 385 L
Ground clearance 124 mm
Turning circle 11.4 m

Mass

Kerb weight 1880 kg
Max weight 2380 kg
Max load 500 kg

Consumption & emissions

Fuel combined (WLTP) 5.3 L/100km
CO₂ (WLTP) 139 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 225/50 R17
Wheel rims 7.5J x 17
Assisting systems Abs Anti Lock Braking System

Efficiency ratios

Weight-to-power 6.6 kg/Hp, 152.1 Hp/tonne
Weight-to-torque 2.9 kg/Nm, 345.7 Nm/tonne

Electric / hybrid

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

Other

Start Of Production 2021
End Of Production 2024

Performance

Engine speed (1k/rpm)

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

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