BMW 4 Series Convertible (G23) 420d (190 Hp) Mild Hybrid Steptronic | Technical specs, data, fuel consumption, Dimensions

2021 BMW 4 Series Convertible (G23) - Photo 1

Key specs

BMW 4 Series Convertible (G23) 420d (190 Hp) Mild Hybrid Steptronic /Cabriolet 2020 - 2024/

What is the body type of BMW 4 Series Convertible (G23)?

Cabriolet, 2 Doors, 4 Seats

What is the fuel consumption and economy of BMW 4 Series Convertible (G23) 420d (190 Hp) Mild Hybrid Steptronic?

4.9-5.5 l/100 km
48 - 42.8 US mpg
57.6 - 51.4 UK mpg
20.4 - 18.2 km/l

How environmentally friendly is BMW 4 Series 420d (190 Hp) Mild Hybrid Steptronic?

127-143 g/km CO₂
Euro 6d

How fast is 2020 4 Series Convertible (G23) 420d (190 Hp) Mild Hybrid Steptronic?

236 km/h | 147 mph
0-100 km/h: 7.6 sec
0-60 mph: 7.2 sec

What is the power output of BMW 4 Series Cabriolet 2020 420d (190 Hp) Mild Hybrid Steptronic?

190 Hp, 400 Nm
295 lb.-ft.

What is the engine displacement of BMW 4 Series Cabriolet 2020 420d (190 Hp) Mild Hybrid Steptronic?

2.0 l
1995 cm³
121.74 cu. in.

What is the number of cylinders in 2020 BMW 420d (190 Hp) Mild Hybrid Steptronic?

4, Inline

What is the drivetrain of BMW 4 Series Convertible (G23) Cabriolet 2020 420d (190 Hp) Mild Hybrid Steptronic?

Rear wheel drive. MHEV (Mild Hybrid Electric Vehicle, power-assist hybrid, battery-assisted hybrid vehicles, BAHV). The Internal combustion engine (ICE) and electric motor drive the rear wheels of the car with the ability to work only in mixed mode.

What is the length of 2020 BMW 4 Series Cabriolet?

4768 mm
187.72 in.

What is the width of 2020 BMW 4 Series Cabriolet?

1852 mm
72.91 in.

What is the kerb weight of 2020 BMW 4 Series Convertible (G23) 420d (190 Hp) Mild Hybrid Steptronic?

1775 kg
3913 lbs.

What is the maximum permissible mass of 2020 BMW 4 Series Convertible (G23) 420d (190 Hp) Mild Hybrid Steptronic?

2270 kg
5004 lbs.

What is the trunk (boot) capacity of 2020 BMW 4 Series Cabriolet?

300 - 385 l
10.6 - 13.6 cu. ft.

What is the number of gears in What is the gearbox type of 2020 BMW 4 Series Convertible (G23) 420d (190 Hp) Mild Hybrid Steptronic?

8, automatic transmission Steptronic

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General information

Brand

BMW

Model

4 Series

Generation

4 Series Convertible (G23)

Modification (Engine)

420d (190 Hp) Mild Hybrid Steptronic

Start of production

2020 year

End of production

January, 2024 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)

4.9-5.5 l/100 km 48 - 42.8 US mpg
57.6 - 51.4 UK mpg
20.4 - 18.2 km/l

CO₂ emissions (WLTP)

127-143 g/km

Fuel consumption (economy) - urban (NEDC)

4.7-5 l/100 km 50 - 47 US mpg
60.1 - 56.5 UK mpg
21.3 - 20 km/l

Fuel consumption (economy) - extra urban (NEDC)

3.9-4.3 l/100 km 60.3 - 54.7 US mpg
72.4 - 65.7 UK mpg
25.6 - 23.3 km/l

Fuel consumption (economy) - combined (NEDC)

4.2-4.5 l/100 km 56 - 52.3 US mpg
67.3 - 62.8 UK mpg
23.8 - 22.2 km/l

CO₂ emissions (NEDC)

111-119 g/km

Fuel Type

Diesel

Acceleration 0 - 100 km/h

7.6 sec

Acceleration 0 - 62 mph

7.6 sec

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

7.2 sec

Maximum speed

236 km/h 147 mph

Emission standard

Euro 6d

Weight-to-power ratio

9.3 kg/Hp, 107 Hp/tonne

Weight-to-torque ratio

4.4 kg/Nm, 225.4 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

11 Hp

Electric motor Torque

25 Nm 18 lb.-ft.

Electric motor location

Front, Longitudinal

Internal combustion engine specs

Power

190 Hp @ 4000 rpm.

Power per litre

95.2 Hp/l

Torque

400 Nm @ 1750-2500 rpm. 295 lb.-ft. @ 1750-2500 rpm.

Engine layout

Front, Longitudinal

Engine Model/Code

B47D20B

Engine displacement

1995 cm³ 121.74 cu. in.

Number of cylinders

Engine configuration

Inline

Cylinder Bore

84 mm 3.31 in.

Piston Stroke

90 mm 3.54 in.

Compression ratio

16.5:1

Number of valves per cylinder

Fuel injection system

Diesel Commonrail

Engine aspiration

TwinPower Turbo, Intercooler

Valvetrain

DOHC

Engine oil capacity

5.5 l 5.81 US qt | 4.84 UK qt

Engine oil specification

Coolant

7 l 7.4 US qt | 6.16 UK qt

Engine systems

Start & Stop System
Particulate filter

Volume and weights

Kerb Weight

1775 kg 3913 lbs.

Max. weight

2270 kg 5004 lbs.

Max load

495 kg 1091 lbs.

Trunk (boot) space - minimum

300 l 10.6 cu. ft.

Trunk (boot) space - maximum

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%)

1600 kg 3527 lbs.

Permitted trailer load without brakes

750 kg 1653 lbs.

Permitted towbar download

75 kg 165 lbs.

Dimensions

Length

4768 mm 187.72 in.

Width

1852 mm 72.91 in.

Height

1384 mm 54.49 in.

Wheelbase

2851 mm 112.24 in.

Front track

1575 mm 62.01 in.

Rear (Back) track

1611 mm 63.43 in.

Ride height (ground clearance)

124 mm 4.88 in.

Drag coefficient (C_d)

0.27

Minimum turning circle (turning diameter)

11.4 m 37.4 ft.

Drivetrain, brakes and suspension specs

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.

Drive wheel

Rear wheel drive

Number of gears and type of gearbox

8 gears, automatic transmission Steptronic

Front suspension

Coil spring, 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

225/50 R17

Wheel rims size

7.5J x 17

Specs of BMW 4 Series Convertible (G23) 420d (190 Hp) Mild Hybrid Steptronic /2020, 2021, 2022, 2023, 2024/