BMW 4 Series Convertible (G23)
420d (190 Hp) Mild Hybrid Steptronic
2020 – 2024 · Diesel · Rear-wheel drive · 8-speed Steptronic automatic
- Power
- 190 Hp
- 0–100 km/h
- 7.6 s
- Top speed
- 236 km/h147 mph
- Combined
- 4.2 - 4.5 l/100 km52.3 - 56.0 mpg
General information
- Brand
- BMW
- Model
- 4 Series
- Generation
- 4 Series Convertible (G23)
- Modification (Engine)
- 420d (190 Hp) Mild Hybrid Steptronic
- Start of production
- 2020
- End of production
- January, 2024
- Powertrain architecture
- Mild hybrid (MHEV)
- Body type
- Cabriolet
- Seats
- 4
- Doors
- 2
Performance specs
- Fuel consumption (urban)
- 4.7 - 5.0 l/100 km47.0 - 50.0 mpg
- Fuel consumption (extra urban)
- 3.9 - 4.3 l/100 km54.7 - 60.3 mpg
- Fuel consumption (combined)
- 4.2 - 4.5 l/100 km52.3 - 56.0 mpg
- Consumption test cycle
- NEDC
- CO2 emissions
- 111 - 119 g/km179 - 192 g/mi
- Fuel type
- Diesel
- Acceleration 0 - 100 km/h
- 7.6 s
- Acceleration 0 - 60 mph (calculated)
- 7.2 s
- Acceleration 0 - 200 km/h
- —
- Maximum speed
- 236 km/h147 mph
- Emission standard
- Euro 6d
- Weight-to-power ratio
- 9.3 kg/Hp20.5 lb/Hp
- Weight-to-torque ratio
- 4.4 kg/Nm13.2 lb/lb-ft
Engine specs
- Power
- 190 Hp
- Power at
- 4000 rpm
- Power per litre
- 95.2
- Torque
- 400 Nm295 lb-ft
- Torque at
- 1750 - 2500 rpm
- Engine layout
- Front, longitudinal
- Engine model/code
- B47D20B
- Engine displacement
- 1995 cm³1995 cm³ (122 cu in)
- Number of cylinders
- 4
- Engine configuration
- Inline
- Cylinder bore
- 84 mm3.3 in
- Piston stroke
- 90 mm3.5 in
- Compression ratio
- 16.5 : 1
- Number of valves per cylinder
- 4
- Fuel injection system
- Diesel Commonrail
- Engine aspiration
- TwinPower Turbo, intercooler
- Engine oil capacity
- 5.5 l1.5 gal
- Coolant
- 7 l1.8 gal
- Engine systems
- Start & Stop System, Particulate filter
Space, volume and weights
- Kerb weight
- 1775 kg3913 lb
- Max. weight
- 2270 kg5004 lb
- Max load
- 495 kg1091 lb
- Trunk (boot) space - minimum
- 300 l79.3 gal
- Trunk (boot) space - maximum
- 385 l101.7 gal
- Fuel tank capacity
- 59 l15.6 gal
- Permitted trailer load with brakes (12%)
- 1600 kg3527 lb
- Permitted trailer load without brakes
- 750 kg1653 lb
- Permitted towbar download
- 75 kg165 lb
Dimensions
- Length
- 4768 mm187.7 in
- Width
- 1852 mm72.9 in
- Height
- 1384 mm54.5 in
- Wheelbase
- 2851 mm112.2 in
- Front track
- 1575 mm62.0 in
- Rear (Back) track
- 1611 mm63.4 in
- Ride height (ground clearance)
- 124 mm4.9 in
- Drag coefficient (Cd)
- 0.27
- Minimum turning circle
- 11.4 m37.4 ft
Drivetrain, brakes and suspension
- 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