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BMW 4 Series Convertible (G23)

420d (Stage 2)

257 hp1995 ccDieselRWDAutomaticTurbochargedCabriolet / convertible2020-2024
0-100 km/h 6.3 s
Top speed
268 km/h
167 mph

Performance

Performance
Power190 hp / Stage 2: 257 hp286 hp / Stage 2: 386 hp340 hp / Stage 2: 459 hp
Torque
560Nm413lb-ft+160 Nm
Displacement
1,995cc122cu in
Curb weight
1,775kg3,913lb
Gross weight
2,270kg5,004lb
Power-to-weight
145hp/t108kW/t66hp/1000 lb
Calculated
Torque-to-weight
315Nm/t211lb-ft/ton
Calculated
0-100 km/h
6.3s-1.3 s
0-200 km/h
22.5s-11.0 s
Calculated
0-60 mph
6.0s-1.2 s
Calculated
Quarter mile
14.3s-1.1 s
Calculated
Top speed
268 km/h
167 mph
+32 km/h
To 99% top speed
93.9s99% target: 265 km/h / 165 mph-5.1 s
Calculated

Efficiency and range

Efficiency and range
Fuel consumption
4.5L/100 km52.3mpg US62.8mpg UK
Fuel consumption city
5L/100 km47mpg US56.5mpg UK
Fuel consumption highway
4.3L/100 km54.7mpg US65.7mpg UK
Fuel tank
59L
Estimated range
1,311km815mi
Calculated

Engine and drivetrain

Engine and drivetrain
FuelDieselGasoline
EngineB47D20B
Body typeCabriolet / convertible
AspirationTurbocharged
Drive typeRWD
TransmissionAutomatic
Gears8-speed
Engine layoutFront, Longitudinal
Engine configurationInline
Cylinders4
Valves per cylinder4

Dimensions and space

Dimensions and space
Length
4,768mm188in
Width
1,852mm73in
Height
1,384mm54in
Wheelbase
2,851mm112in
Front track
1,575mm62in
Rear track
1,611mm63in
Ground clearance
124mm5in
Trunk volume
300L
Max trunk volume
385L
Doors
2
Seats
4

Performance spider chart

Current vehicle compared with the precomputed median score across the database.

Power benchmark

Current vehicle compared with the database median for Power. Higher is better · hp / kW

Power benchmark
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 2)
257 hp
191 kW
Database median
262 hp
195 kW

0-100 km/h benchmark

Current vehicle compared with the database median for 0-100 km/h. Lower is better · s

0-100 km/h benchmark
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 2)6.3 s
Database median6.4 s

Top speed benchmark

Current vehicle compared with the database median for Top speed. Higher is better · km/h / mph

Top speed benchmark
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 2)
268 km/h
167 mph
Database median
242 km/h
150 mph

Fuel consumption benchmark

Current vehicle compared with the database median for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Fuel consumption benchmark
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 2)
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
Database median
7.4 L/100 km
31.8 mpg US
38.2 mpg UK

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehicleBMW 4 Series Convertible (G23) 420d (Stage 2)
Consumption4.5 L/100 km52.3 mpg US62.8 mpg UK
Cost / 100 km7.88 LC100 km
Cost / 100 mi12.67 LC100 mi
Annual fuel used675 L178 US gal148 UK gal
Annual fuel cost1,181 LC/year

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

BMW 4 Series Convertible (G23) 420d (Stage 2)PowerTorque
  • BMW 4 Series Convertible (G23) 420d (Stage 2): Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Convertible (G23)420d (Stage 2)4,000 rpm1,750-2,500 rpm4,250 rpm

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