BMW X3 (G45) 40d (303 Hp) Mild Hybrid xDrive Steptronic | Technical specs, data, fuel consumption, Dimensions

Key specs

BMW X3 (G45) 40d (303 Hp) Mild Hybrid xDrive Steptronic /SAV 2025 - /

What is the body type of BMW X3 (G45)?

SAV, 5 Doors, 5 Seats

What is the fuel consumption and economy of BMW X3 (G45) 40d (303 Hp) Mild Hybrid xDrive Steptronic?

6.2-6.7 l/100 km
37.9 - 35.1 US mpg
45.6 - 42.2 UK mpg
16.1 - 14.9 km/l

How environmentally friendly is BMW X3 40d (303 Hp) Mild Hybrid xDrive Steptronic?

162-177 g/km CO₂
Euro 6e

How fast is 2025 X3 (G45) 40d (303 Hp) Mild Hybrid xDrive Steptronic?

245 km/h | 152 mph
0-100 km/h: 5.4 sec
0-60 mph: 5.1 sec

What is the power output of BMW X3 SAV 2025 40d (303 Hp) Mild Hybrid xDrive Steptronic?

303 Hp, 670 Nm
494 lb.-ft.

What is the engine displacement of BMW X3 SAV 2025 40d (303 Hp) Mild Hybrid xDrive Steptronic?

3.0 l
2993 cm³
182.64 cu. in.

What is the number of cylinders in 2025 BMW 40d (303 Hp) Mild Hybrid xDrive Steptronic?

6, Inline

What is the drivetrain of BMW X3 (G45) SAV 2025 40d (303 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 X3 SAV?

4755 mm
187.2 in.

What is the width of 2025 BMW X3 SAV?

1920 mm
75.59 in.

What is the kerb weight of 2025 BMW X3 (G45) 40d (303 Hp) Mild Hybrid xDrive Steptronic?

1975 kg
4354 lbs.

What is the maximum permissible mass of 2025 BMW X3 (G45) 40d (303 Hp) Mild Hybrid xDrive Steptronic?

2620 kg
5776 lbs.

What is the trunk (boot) capacity of 2025 BMW X3 SAV?

570 - 1700 l
20.1 - 60 cu. ft.

What are the number of gears and the gearbox type of 2025 BMW X3 (G45) 40d (303 Hp) Mild Hybrid xDrive Steptronic?

8, automatic transmission Steptronic

BMW
- BMW X3
  - X3 (G45)
    - M50 (398 Hp) Mild Hybrid xDrive Steptronic
    - 40d (303 Hp) Mild Hybrid xDrive Steptronic
    - 30e (299 Hp) Plug-in Hybrid xDrive Steptronic
    - 30 (255 Hp) Mild Hybrid xDrive Steptronic
    - 20d (197 Hp) Mild Hybrid xDrive Steptronic
    - 20 (208 Hp) Mild Hybrid xDrive Steptronic
    - 20 (190 Hp) Mild Hybrid Steptronic

Compare

General information

Brand

BMW

Model

Generation

X3 (G45)

Modification (Engine)

40d (303 Hp) Mild Hybrid xDrive Steptronic

Start of production

April, 2025

Powertrain Architecture

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

Body type

SAV

Seats

Doors

Looking for BMW X3 on the used-car market?

Check its history →

Performance specs

Combined fuel consumption (WLTP)

6.2-6.7 l/100 km 37.9 - 35.1 US mpg
45.6 - 42.2 UK mpg
16.1 - 14.9 km/l

CO₂ emissions (WLTP)

162-177 g/km

Fuel Type

Diesel

Acceleration 0 - 100 km/h

5.4 sec

Acceleration 0 - 62 mph

5.4 sec

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

5.1 sec

Maximum speed

245 km/h 152 mph

Emission standard

Euro 6e

Weight-to-power ratio

6.5 kg/Hp, 153.4 Hp/tonne

Weight-to-torque ratio

2.9 kg/Nm, 339.2 Nm/tonne

Electric and hybrid car specs

Gross battery capacity

0.9 kWh

Battery voltage

48 V

Battery technology

Lithium-ion (Li-Ion)

Battery location

Under the trunk

Electric motor 1

Electric motor power

18 Hp

Electric motor Torque

200 Nm 148 lb.-ft.

Electric motor location

Between the combustion engine and the transmission

Electric motor type

Synchronous

System power

303 Hp

System torque

670 Nm 494 lb.-ft.

Internal combustion engine specs

Power

286 Hp @ 4000 rpm.

Power per litre

95.6 Hp/l

Torque

650 Nm @ 1500-2500 rpm. 479 lb.-ft. @ 1500-2500 rpm.

Engine layout

Front, Longitudinal

Engine Model/Code

B57

Engine displacement

2993 cm³ 182.64 cu. in.

Number of cylinders

Engine configuration

Inline

Cylinder Bore

84 mm 3.31 in.

Piston Stroke

90 mm 3.54 in.

Number of valves per cylinder

Fuel injection system

Diesel Commonrail

Engine aspiration

TwinPower Turbo, Intercooler

Valvetrain

DOHC

Engine oil specification

Engine systems

Start & Stop System
Particulate filter

Volume and weights

Kerb Weight

1975 kg 4354 lbs.

Max. weight

2620 kg 5776 lbs.

Max load

645 kg 1422 lbs.

Trunk (boot) space - minimum

570 l 20.1 cu. ft.

Trunk (boot) space - maximum

1700 l 60 cu. ft.

Fuel tank capacity

60 l 15.85 US gal | 13.2 UK gal

AdBlue tank

21.8 l 5.76 US gal | 4.8 UK gal

Max. roof load

100 kg 220 lbs.

Permitted trailer load with brakes (12%)

2500 kg 5512 lbs.

Permitted trailer load without brakes

750 kg 1653 lbs.

Permitted towbar download

100 kg 220 lbs.

Dimensions

Length

4755 mm 187.2 in.

Width

1920 mm 75.59 in.

Width including mirrors

2132 mm 83.94 in.

Height

1660 mm 65.35 in.

Wheelbase

2865 mm 112.8 in.

Front track

1618-1636 mm 63.7 - 64.41 in.

Rear (Back) track

1623-1681 mm 63.9 - 66.18 in.

Front overhang

880 mm 34.65 in.

Rear overhang

1010 mm 39.76 in.

Ride height (ground clearance)

216 mm 8.5 in.

Minimum turning circle (turning diameter)

12.2 m 40.03 ft.

Approach angle

20.6°

Departure angle

22°

Ramp-over (breakover) angle

18.7°

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

Tire size

Front wheel tires: 225/60 R18; 245/50 R19; 255/45 R20; 255/40 R21
Rear wheel tires: 225/60 R18; 245/50 R19; 285/40 R20; 285/35 R21

Wheel rim size

Front wheel rims: 8J x 18; 8.5J x 19; 9J x 20; 9J x 21
Rear wheel rims: 8J x 18; 8.5J x 19; 10.5J x 20; 10.5J x 21

Specs of BMW X3 (G45) 40d (303 Hp) Mild Hybrid xDrive Steptronic /2025, 2026/