BMW 4 Series Convertible (G23 LCI, facelift 2024) M440i (392 Hp) Mild Hybrid xDrive Steptronic | Technical specs, data, fuel consumption, Dimensions

2025 BMW 4 Series Convertible (G23 LCI, facelift 2024) - Photo 1

Key specs

BMW 4 Series Convertible (G23 LCI, facelift 2024) M440i (392 Hp) Mild Hybrid xDrive Steptronic /Cabriolet 2025 - /

What is the body type of BMW 4 Series Convertible (G23 LCI, facelift 2024)?

Cabriolet, 2 Doors, 4 Seats

What is the fuel consumption and economy of BMW 4 Series Convertible (G23 LCI, facelift 2024) M440i (392 Hp) Mild Hybrid xDrive Steptronic?

7.7 l/100 km
30.5 US mpg
36.7 UK mpg
13 km/l

How environmentally friendly is BMW 4 Series M440i (392 Hp) Mild Hybrid xDrive Steptronic?

176 g/km CO₂
Euro 6e

How fast is 2025 4 Series Convertible (G23 LCI, facelift 2024) M440i (392 Hp) Mild Hybrid xDrive Steptronic?

250 km/h | 155 mph
0-100 km/h: 4.8 sec
0-60 mph: 4.6 sec

What is the power output of BMW 4 Series Cabriolet 2025 M440i (392 Hp) Mild Hybrid xDrive Steptronic?

392 Hp, 540 Nm
398 lb.-ft.

What is the engine displacement of BMW 4 Series Cabriolet 2025 M440i (392 Hp) Mild Hybrid xDrive Steptronic?

3.0 l
2998 cm³
182.95 cu. in.

What is the number of cylinders in 2025 BMW M440i (392 Hp) Mild Hybrid xDrive Steptronic?

6, Inline

What is the drivetrain of BMW 4 Series Convertible (G23 LCI, facelift 2024) Cabriolet 2025 M440i (392 Hp) Mild Hybrid xDrive Steptronic?

All wheel drive (4x4). MHEV (Mild Hybrid Electric Vehicle, power-assist hybrid, battery-assisted hybrid vehicles, BAHV). 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.

What is the length of 2025 BMW 4 Series Cabriolet?

4770 mm
187.8 in.

What is the width of 2025 BMW 4 Series Cabriolet?

1852 mm
72.91 in.

What is the kerb weight of 2025 BMW 4 Series Convertible (G23 LCI, facelift 2024) M440i (392 Hp) Mild Hybrid xDrive Steptronic?

1925 kg
4244 lbs.

What is the maximum permissible mass of 2025 BMW 4 Series Convertible (G23 LCI, facelift 2024) M440i (392 Hp) Mild Hybrid xDrive Steptronic?

2410 kg
5313 lbs.

What is the trunk (boot) capacity of 2025 BMW 4 Series Cabriolet?

385 l
13.6 cu. ft.

What is the number of gears in What is the gearbox type of 2025 BMW 4 Series Convertible (G23 LCI, facelift 2024) M440i (392 Hp) Mild Hybrid xDrive Steptronic?

8, automatic transmission Steptronic

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General information

Brand

BMW

Model

4 Series

Generation

4 Series Convertible (G23 LCI, facelift 2024)

Modification (Engine)

M440i (392 Hp) Mild Hybrid xDrive Steptronic

Start of production

September, 2025 year

Powertrain Architecture

MHEV (Mild Hybrid Electric Vehicle, power-assist hybrid, battery-assisted hybrid vehicles, BAHV)

Body type

Cabriolet

Seats

Doors

Looking for BMW 4 Series on the used-car market?

Check its history →

Performance specs

Combined fuel consumption (WLTP)

7.7 l/100 km 30.5 US mpg
36.7 UK mpg
13 km/l

CO₂ emissions (WLTP)

176 g/km

Fuel Type

Petrol (Gasoline)

Acceleration 0 - 100 km/h

4.8 sec

Acceleration 0 - 62 mph

4.8 sec

Acceleration 0 - 60 mph (Calculated by Auto-Data.net)

4.6 sec

Maximum speed

250 km/h, Electronically limited 155 mph

Emission standard

Euro 6e

Weight-to-power ratio

4.9 kg/Hp, 203.6 Hp/tonne

Weight-to-torque ratio

3.6 kg/Nm, 280.5 Nm/tonne

Electric cars and hybrids specs

Gross battery capacity

0.4 kWh

Battery voltage

48 V

Battery technology

Lithium-ion (Li-Ion)

Battery location

Under the front hood

Electric motor 1

Electric motor power

12 Hp

Electric motor Torque

200 Nm 148 lb.-ft.

Electric motor location

Front, Longitudinal

System power

392 Hp

Internal combustion engine specs

Power

381 Hp @ 5200-6250 rpm.

Power per litre

127.1 Hp/l

Torque

540 Nm @ 1900-4800 rpm. 398 lb.-ft. @ 1900-4800 rpm.

Engine layout

Front, Longitudinal

Engine Model/Code

B58

Engine displacement

2998 cm³ 182.95 cu. in.

Number of cylinders

Engine configuration

Inline

Cylinder Bore

82 mm 3.23 in.

Piston Stroke

94.6 mm 3.72 in.

Number of valves per cylinder

Fuel injection system

Direct injection

Engine aspiration

Twin-scroll turbocharger, Intercooler

Valvetrain

Double-VANOS, VALVETRONIC

Engine systems

Start & Stop System
Particulate filter

Volume and weights

Kerb Weight

1925 kg 4244 lbs.

Max. weight

2410 kg 5313 lbs.

Max load

485 kg 1069 lbs.

Trunk (boot) space - minimum

385 l 13.6 cu. ft.

Fuel tank capacity

59 l 15.59 US gal | 12.98 UK gal

Permitted trailer load with brakes (12%)

1800 kg 3968 lbs.

Permitted trailer load without brakes

750 kg 1653 lbs.

Permitted towbar download

75 kg 165 lbs.

Dimensions

Length

4770 mm 187.8 in.

Width

1852 mm 72.91 in.

Width including mirrors

2081 mm 81.93 in.

Height

1394 mm 54.88 in.

Wheelbase

2851 mm 112.24 in.

Front track

1583 mm 62.32 in.

Rear (Back) track

1592 mm 62.68 in.

Front overhang

858 mm 33.78 in.

Rear overhang

1061 mm 41.77 in.

Ride height (ground clearance)

126 mm 4.96 in.

Minimum turning circle (turning diameter)

12 m 39.37 ft.

Drivetrain, brakes and suspension specs

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.

Drive wheel

All wheel drive (4x4)

Number of gears and type of gearbox

8 gears, automatic transmission Steptronic

Front suspension

Suspension strut, Anti-roll bar

Rear suspension

Independent multi-link spring suspension with anti-roll bar

Front brakes

Ventilated discs

Rear brakes

Ventilated discs

Assisting systems

ABS (Anti-lock braking system)

Steering type

Steering rack and pinion

Power steering

Electric Steering

Tires size

Front wheel tires: 225/45 R18; 225/40 R19
Rear wheel tires: 255/40 R18; 255/35 R19

Wheel rims size

Front wheel rims: 7.5J x 18; 8J x 19
Rear wheel rims: 8.5J x 18; 8.5J x 19

Specs of BMW 4 Series Convertible (G23 LCI, facelift 2024) M440i (392 Hp) Mild Hybrid xDrive Steptronic /2025, 2026/