| General information |
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| Brand | BMW |
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| Model | 4 Series |
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| Generation | 4 Series Convertible (G23) |
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| Modification (Engine) | 420d (190 Hp) MHEV Steptronic |
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| Start of production | 2020 year |
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| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle, power-assist hybrid, battery-assisted hybrid vehicles, BAHV) |
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| Body type | Cabriolet |
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| Seats | 4 |
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| Doors | 2 |
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| Performance specs |
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| Combined fuel consumption (WLTP) |
4.9-5.5 l/100 km
48 - 42.77 US mpg57.65 - 51.36 UK mpg20.41 - 18.18 km/l |
| CO2 emissions (WLTP) | 127-143 g/km |
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| Fuel consumption (economy) - urban (NEDC) |
4.7-5.0 l/100 km
50.05 - 47.04 US mpg60.1 - 56.5 UK mpg21.28 - 20 km/l |
| Fuel consumption (economy) - extra urban (NEDC) |
3.9-4.3 l/100 km
60.31 - 54.7 US mpg72.43 - 65.69 UK mpg25.64 - 23.26 km/l |
| Fuel consumption (economy) - combined (NEDC) |
4.2-4.5 l/100 km
56 - 52.27 US mpg67.26 - 62.77 UK mpg23.81 - 22.22 km/l |
| CO2 emissions (NEDC) | 111-119 g/km |
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| Fuel Type | Diesel |
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| Acceleration 0 - 100 km/h | 7.6 sec |
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| Acceleration 0 - 62 mph | 7.6 sec |
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| Acceleration 0 - 60 mph | 7.2 sec |
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| Maximum speed |
236 km/h
146.64 mph |
| Emission standard | Euro 6d |
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| Weight-to-power ratio | 9.3 kg/Hp, 107 Hp/tonne |
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| Weight-to-torque ratio | 4.4 kg/Nm, 225.4 Nm/tonne |
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| Electric cars and hybrids specs |
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| Gross battery capacity | 0.528 kWh |
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| Electric motor 1 |
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| Electric motor power | 11 Hp |
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| Internal combustion engine specs |
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| Power | 190 Hp @ 4000 rpm. |
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| Power per litre | 95.2 Hp/l |
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| Torque |
400 Nm @ 1750-2500 rpm.
295.02 lb.-ft. @ 1750-2500 rpm. |
| Engine location | Front, Longitudinal |
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| Engine Model/Code | B47D20B |
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| Engine displacement |
1995 cm3
121.74 cu. in. |
| Number of cylinders | 4 |
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| Position of cylinders | Inline |
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| Cylinder Bore |
84 mm
3.31 in. |
| Piston Stroke |
90 mm
3.54 in. |
| Compression ratio | 16.5 |
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| Number of valves per cylinder | 4 |
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| Fuel System | Diesel Commonrail |
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| Engine aspiration | Twin-power turbo, Intercooler |
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| Engine oil capacity |
5.5 l
5.81 US qt | 4.84 UK qt |
| Oil viscosity | No Data |
| Engine oil specification |
| Coolant |
7 l
7.4 US qt | 6.16 UK qt |
| Engine systems | Start & Stop SystemParticulate filter |
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| Space, Volume and weights |
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| Kerb Weight |
1775 kg
3913.21 lbs. |
| Max. weight |
2270 kg
5004.49 lbs. |
| Max load |
495 kg
1091.29 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%) |
1600 kg
3527.4 lbs. |
| Permitted trailer load without brakes |
750 kg
1653.47 lbs. |
| Permitted towbar download |
75 kg
165.35 lbs. |
| Dimensions |
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| 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 (Cd) | 0.27 |
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| Minimum turning circle (turning diameter) |
11.4 m
37.4 ft. |
| Drivetrain, brakes and suspension specs |
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| 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. |
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| Drive wheel | Rear wheel drive |
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| Number of Gears (automatic transmission) | 8 Steptronic |
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| Front suspension | Double wishbone |
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| Rear suspension | Multi-link independent |
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| Front brakes | Ventilated discs |
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| Rear brakes | Ventilated discs |
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| Assisting systems | ABS (Anti-lock braking system) |
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| Steering type | Steering rack and pinion |
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| Power steering | Electric Steering |
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| Tires size | 225/50 R17 98Y XL |
| Wheel rims size | 7.5J x 17 |
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