| General | |
| Body type | Cabriolet |
| Brand | BMW |
| Doors | 2 |
| Generation | 4 Series Convertible (G23) |
| Model | 4 Series |
| Modification (Engine) | 420d (190 Hp) MHEV Steptronic |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle, power-assist hybrid, battery-assisted hybrid vehicles, BAHV) |
| Seats | 4 |
| Start of production | 2020 |
| Performance | |
| Acceleration 0 - 100 km/h | 7.6 sec |
| Acceleration 0 - 60 mph | 7.2 sec |
| Acceleration 0 - 62 mph | 7.6 sec |
| CO2 emissions (NEDC) | 111-119 g/km |
| CO2 emissions (WLTP) | 127-143 g/km |
| Combined fuel consumption (WLTP) | 4.9-5.5 l/100 km |
| Emission standard | Euro 6d |
| Fuel Type | Diesel |
| Fuel consumption (economy) - combined (NEDC) | 4.2-4.5 l/100 km |
| Fuel consumption (economy) - extra urban (NEDC) | 3.9-4.3 l/100 km |
| Fuel consumption (economy) - urban (NEDC) | 4.7-5.0 l/100 km |
| Maximum speed | 236 km/h |
| Electric | |
| Battery capacity | 0.528 kWh |
| Electric motor power number 1 | 11 Hp |
| Internal Engine | |
| Compression ratio | 16.5 |
| Cylinder Bore | 84 mm |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine displacement | 1995 cm |
| Engine location | Front, Longitudinal |
| Engine oil capacity | 5.5 l |
| Engine systems | Start & Stop SystemParticulate filter |
| Fuel System | Diesel Commonrail |
| Number of cylinders | 4 |
| Number of valves per cylinder | 4 |
| Piston Stroke | 90 mm |
| Position of cylinders | Inline |
| Power | 190 Hp @ 4000 rpm. |
| Power per litre | 95.2 Hp/l |
| Torque | 400 Nm @ 1750-2500 rpm. |
| Dimensions | |
| Drag coefficient (Cd) | 0.27 |
| Front track | 1575 mm |
| Height | 1384 mm |
| Length | 4768 mm |
| Minimum turning circle (turning diameter) | 11.4 m |
| Rear (Back) track | 1611 mm |
| Ride height | 124 mm |
| Wheelbase | 2851 mm |
| Width | 1852 mm |
| Drivetrain | |
| Drive wheel | Rear wheel drive |
| Front brakes | Ventilated discs |
| Front suspension | Double wishbone |
| Number of Gears (automatic transmission) | 8 Steptronic |
| Power steering | Electric Steering |
| Rear brakes | Ventilated discs |
| Rear suspension | Multi-link independent |
| Steering type | Steering rack and pinion |
| Tires size | 225/50 R17 98Y XL |
| Wheel rims size | 7.5J x 17 |
| Space | |
| Fuel tank capacity | 59 l |
| Kerb Weight | 1775 kg |
| Max load | 495 kg |
| Max. weight | 2270 kg |
| Permitted towbar download | 75 kg |
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