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BMW 4 Series G23 Facelift (2024–2025) 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 Facelift overview

The BMW 4 Series (G23 Facelift) is the 2nd generation of the 4 Series, built from 2024 to 2025. It is offered as a Cabriolet with 9 engines (petrol, diesel), from 170 HP to 375 HP. The 430i (255 Hp) Mild Hybrid Steptronic reaches a top speed of 210 km/h and is 4773 mm long.

How much horsepower does the BMW 4 Series have?

The BMW 4 Series (G23 Facelift) has 170 HP to 375 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 (255 HP), 3.0 B57 (286 HP), 3.0 B57 (340 HP), 3.0 B58 (374 HP), 3.0 B58 (375 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 (255 HP, petrol), 3.0 B57 (286 HP, diesel), 3.0 B57 (340 HP, diesel), 3.0 B58 (374 HP, petrol), 3.0 B58 (375 HP, petrol).

What are the dimensions of the BMW 4 Series?

The BMW 4 Series is 4773 mm long, 1852 mm wide, 1387 mm tall, with a 2851 mm wheelbase.

Advanced Specs

Overview

Generation BMW 4 Series Convertible G23 LCI facelift
Year 2024–present
Platform BMW CLAR
Variant 430i (255 Hp) Mild Hybrid Steptronic
Body type cabriolet
Engine type Mild Hybrid
Fuel type Petrol
Seats 4
Doors 2

Power & torque

Power 255 HP
Power @ min rpm 4700 rpm
Power @ max rpm 6500 rpm
Torque 400 Nm
Torque @ min rpm 1600 rpm
Torque @ max rpm 4500 rpm

Performance

Top speed 210 km/h
0–60 mph 6.0 s

Engine

Engine code B48B20O2
Displacement 1998 cc
Cylinders 4
Configuration inline
Bore 82.0 mm
Stroke 94.6 mm
Compression ratio 10.5
Valves per cylinder 4
Injection system Direct Injection
Aspiration Twin Power Turbo Intercooler
Valvetrain Double Vanos Valvetronic
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 4773 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 1826 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 7.2 kg/Hp, 139.6 Hp/tonne
Weight-to-torque 4.6 kg/Nm, 219.1 Nm/tonne

Electric / hybrid

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

Other

Start Of Production 2024
Width Including Mirrors 2081

Performance

Engine speed (1k/rpm)

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

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