Car comparison

BMW 4 Series Convertible (G23) 420d · Stage 3vsBMW 4 Series Convertible (G23) 420d · Stage 2vsBMW 4 Series Convertible (G23) 420d · Stage 1vsBMW 4 Series Convertible (G23) 420d

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

BMW 4 Series Convertible (G23)

420d (Stage 3)

295 hp1995 ccDieselRWDAutomaticTurbochargedCabriolet / convertible2020-2024
VS

BMW 4 Series Convertible (G23)

420d (Stage 2)

257 hp1995 ccDieselRWDAutomaticTurbochargedCabriolet / convertible2020-2024
VS

BMW 4 Series Convertible (G23)

420d (Stage 1)

228 hp1995 ccDieselRWDAutomaticTurbochargedCabriolet / convertible2020-2024
VS

BMW 4 Series Convertible (G23)

420d

190 hp1995 ccDieselRWDAutomaticTurbochargedCabriolet / convertible2020-2024

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

BMW 4 Series Convertible (G23) 420d (Stage 3) 295 hp

  • Quickest 0-100 km/h
    5.8 s
  • Fastest top speed
    279 km/h
    173 mph
  • Most powerful
    295 hp
    220 kW
  • Highest torque
    640 Nm
    472 lb-ft
  • Lightest
    1,775 kg
    3,913 lb
  • Best power-to-weight
    166 hp/t
    124 kW/t
    6.0 kg/hp
  • Lowest combined fuel consumption
    4.5 L/100 km
    52.3 mpg US
    62.8 mpg UK
  • Lowest city consumption
    5.0 L/100 km
    47.0 mpg US
    56.5 mpg UK
  • Lowest highway consumption
    4.3 L/100 km
    54.7 mpg US
    65.7 mpg UK
  • Best estimated range
    1,311 km
    815 mi
  • Largest trunk
    300 L
  • Best overall score
    63/100
  • Best performance score
    71/100
  • Best economy score
    95/100
  • Best practicality score
    45/100

Specification comparison

Specification comparison
ModelBMW4 Series Convertible (G23)420d (Stage 3)295 hpBMW4 Series Convertible (G23)420d (Stage 2)257 hpBMW4 Series Convertible (G23)420d (Stage 1)228 hpBMW4 Series Convertible (G23)420d190 hp
Power
295hp220kW+105 hp
257hp191kW+67 hp
228hp170kW+38 hp
190hp142kW
Torque
640Nm472lb-ft+240 Nm
560Nm413lb-ft+160 Nm
500Nm369lb-ft+100 Nm
400Nm295lb-ft
Curb weight
1,775kg3,913lb
1,775kg3,913lb
1,775kg3,913lb
1,775kg3,913lb
Gross weight
2,270kg5,004lb
2,270kg5,004lb
2,270kg5,004lb
2,270kg5,004lb
Top speed
279 km/h
173 mph
+43 km/h
268 km/h
167 mph
+32 km/h
258 km/h
160 mph
+22 km/h
236 km/h
147 mph
To 99% top speed
88.2s99% target: 276 km/h / 172 mph-11.1 s
Calculated
94.1s99% target: 265 km/h / 165 mph-5.1 s
Calculated
98.3s99% target: 255 km/h / 159 mph-1.0 s
Calculated
99.3s99% target: 234 km/h / 145 mph
Calculated
0-100 km/h
5.8s-1.8 s
6.3s-1.3 s
6.8s-0.8 s
7.6s
0-200 km/h
19.5s-14.1 s
Calculated
22.5s-11.1 s
Calculated
25.6s-8.0 s
Calculated
33.6s
Calculated
0-60 mph
5.5s-1.7 s
Calculated
6.0s-1.2 s
Calculated
6.4s-0.8 s
Calculated
7.2s
Calculated
Fuel consumption
4.5L/100 km52.3mpg US62.8mpg UK
4.5L/100 km52.3mpg US62.8mpg UK
4.5L/100 km52.3mpg US62.8mpg UK
4.5L/100 km52.3mpg US62.8mpg UK
Fuel consumption city
5L/100 km47mpg US56.5mpg UK
5L/100 km47mpg US56.5mpg UK
5L/100 km47mpg US56.5mpg UK
5L/100 km47mpg US56.5mpg UK
Fuel consumption highway
4.3L/100 km54.7mpg US65.7mpg UK
4.3L/100 km54.7mpg US65.7mpg UK
4.3L/100 km54.7mpg US65.7mpg UK
4.3L/100 km54.7mpg US65.7mpg UK
Quarter mile
13.8s-1.7 s
Calculated
14.3s-1.1 s
Calculated
14.8s-0.7 s
Calculated
15.5s
Calculated
Power-to-weight
166hp/t124kW/t75hp/1000 lb
Calculated
145hp/t108kW/t66hp/1000 lb
Calculated
128hp/t96kW/t58hp/1000 lb
Calculated
107hp/t80kW/t49hp/1000 lb
Calculated
Torque-to-weight
361Nm/t241lb-ft/ton
Calculated
315Nm/t211lb-ft/ton
Calculated
282Nm/t188lb-ft/ton
Calculated
225Nm/t151lb-ft/ton
Calculated
Estimated range
1,311km815mi
Calculated
1,311km815mi
Calculated
1,311km815mi
Calculated
1,311km815mi
Calculated
Displacement
1,995cc122cu in
1,995cc122cu in
1,995cc122cu in
1,995cc122cu in
Length
4,768mm188in
4,768mm188in
4,768mm188in
4,768mm188in
Width
1,852mm73in
1,852mm73in
1,852mm73in
1,852mm73in
Height
1,384mm54in
1,384mm54in
1,384mm54in
1,384mm54in
Wheelbase
2,851mm112in
2,851mm112in
2,851mm112in
2,851mm112in
Front track
1,575mm62in
1,575mm62in
1,575mm62in
1,575mm62in
Rear track
1,611mm63in
1,611mm63in
1,611mm63in
1,611mm63in
Ground clearance
124mm5in
124mm5in
124mm5in
124mm5in
Trunk volume
300L
300L
300L
300L
Max trunk volume
385L
385L
385L
385L
Doors
2
2
2
2
Seats
4
4
4
4
Fuel tank
59L
59L
59L
59L

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

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

BMW 4 Series Convertible (G23) 420d (Stage 3) 295 hpBMW 4 Series Convertible (G23) 420d (Stage 2) 257 hpBMW 4 Series Convertible (G23) 420d (Stage 1) 228 hpBMW 4 Series Convertible (G23) 420d 190 hpPowerTorque
  • BMW 4 Series Convertible (G23) 420d (Stage 3) 295 hp: Power / Torque
  • BMW 4 Series Convertible (G23) 420d (Stage 2) 257 hp: Power / Torque
  • BMW 4 Series Convertible (G23) 420d (Stage 1) 228 hp: Power / Torque
  • BMW 4 Series Convertible (G23) 420d 190 hp: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Convertible (G23)420d (Stage 3)295 hp4,000 rpm1,750-2,500 rpm4,250 rpm
BMW4 Series Convertible (G23)420d (Stage 2)257 hp4,000 rpm1,750-2,500 rpm4,250 rpm
BMW4 Series Convertible (G23)420d (Stage 1)228 hp4,000 rpm1,750-2,500 rpm4,250 rpm
BMW4 Series Convertible (G23)420d190 hp4,000 rpm1,750-2,500 rpm4,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Convertible (G23)420d (Stage 3)295 hpBMW4 Series Convertible (G23)420d (Stage 2)257 hpBMW4 Series Convertible (G23)420d (Stage 1)228 hpBMW4 Series Convertible (G23)420d190 hp
Acceleration checkpoints
0-60 mph
0-97 km/h
5.5 s
6.0 s
6.4 s
7.2 s
0-100 km/h
0-62 mph
5.8 s
6.3 s
6.8 s
7.6 s
0-200 km/h
0-124 mph
19.5 s
22.5 s
25.6 s
33.6 s
Top speed
279 km/h
173 mph
268 km/h
167 mph
258 km/h
160 mph
236 km/h
147 mph
Drag race simulation
60 ft
18 m
2.3 s
2.4 s
2.4 s
2.5 s
330 ft
101 m
6.1 s
6.3 s
6.4 s
6.7 s
1/8 mile
201 m
9.1 s
9.4 s
9.7 s
10.1 s
1000 ft
305 m
11.7 s
12.1 s
12.5 s
13.0 s
1/4 mile
402 m
13.8 s
14.3 s
14.8 s
15.5 s
Trap speed
1/4 mile
402 m
170 km/h
106 mph
163 km/h
101 mph
157 km/h
98 mph
148 km/h
92 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
295 hp
220 kW
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
257 hp
191 kW
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
228 hp
170 kW
BMW4 Series Convertible (G23)420d190 hp
190 hp
142 kW

BMW 4 Series Convertible (G23) 420d (Stage 3) 295 hp has 105 hp more than BMW 4 Series Convertible (G23) 420d 190 hp.

The biggest power difference is between BMW 4 Series Convertible (G23) 420d 190 hp and BMW 4 Series Convertible (G23) 420d (Stage 3) 295 hp: 105 hp (78 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
640 Nm
472 lb-ft
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
560 Nm
413 lb-ft
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
500 Nm
369 lb-ft
BMW4 Series Convertible (G23)420d190 hp
400 Nm
295 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
1,775 kg
3,913 lb
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
1,775 kg
3,913 lb
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
1,775 kg
3,913 lb
BMW4 Series Convertible (G23)420d190 hp
1,775 kg
3,913 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
279 km/h
173 mph
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
268 km/h
167 mph
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
258 km/h
160 mph
BMW4 Series Convertible (G23)420d190 hp
236 km/h
147 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 3)295 hp5.8 s
BMW4 Series Convertible (G23)420d (Stage 2)257 hp6.3 s
BMW4 Series Convertible (G23)420d (Stage 1)228 hp6.8 s
BMW4 Series Convertible (G23)420d190 hp7.6 s

The biggest 0-100 km/h difference is between BMW 4 Series Convertible (G23) 420d (Stage 3) 295 hp and BMW 4 Series Convertible (G23) 420d 190 hp: 1.8 s.

The closest cars by acceleration are BMW 4 Series Convertible (G23) 420d (Stage 2) 257 hp and BMW 4 Series Convertible (G23) 420d (Stage 1) 228 hp, separated by only 0.5 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
BMW4 Series Convertible (G23)420d190 hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
166 hp/t
124 kW/t
6.0 kg/hp
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
145 hp/t
108 kW/t
6.9 kg/hp
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
128 hp/t
96 kW/t
7.8 kg/hp
BMW4 Series Convertible (G23)420d190 hp
107 hp/t
80 kW/t
9.3 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
1,311 km
815 mi
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
1,311 km
815 mi
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
1,311 km
815 mi
BMW4 Series Convertible (G23)420d190 hp
1,311 km
815 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
295 hp
220 kW
5.8 s
279 km/h
173 mph
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
257 hp
191 kW
6.3 s
268 km/h
167 mph
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
228 hp
170 kW
6.8 s
258 km/h
160 mph
BMW4 Series Convertible (G23)420d190 hp
190 hp
142 kW
7.6 s
236 km/h
147 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
Power
295 hp
220 kW
0-100 km/h5.8 s
Top speed
279 km/h
173 mph
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,768 mm
187.7 in
Height
1,384 mm
54.5 in
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
Power
257 hp
191 kW
0-100 km/h6.3 s
Top speed
268 km/h
167 mph
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,768 mm
187.7 in
Height
1,384 mm
54.5 in
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
Power
228 hp
170 kW
0-100 km/h6.8 s
Top speed
258 km/h
160 mph
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,768 mm
187.7 in
Height
1,384 mm
54.5 in
BMW4 Series Convertible (G23)420d190 hp
Power
190 hp
142 kW
0-100 km/h7.6 s
Top speed
236 km/h
147 mph
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,768 mm
187.7 in
Height
1,384 mm
54.5 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
Power
295 hp
220 kW
0-100 km/h5.8 s
Top speed
279 km/h
173 mph
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
Power
257 hp
191 kW
0-100 km/h6.3 s
Top speed
268 km/h
167 mph
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
Power
228 hp
170 kW
0-100 km/h6.8 s
Top speed
258 km/h
160 mph
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
BMW4 Series Convertible (G23)420d190 hp
Power
190 hp
142 kW
0-100 km/h7.6 s
Top speed
236 km/h
147 mph
4.5 L/100 km
52.3 mpg US
62.8 mpg UK

BMW 4 Series Convertible (G23) 420d (Stage 3) 295 hp is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
5.8 s
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
6.3 s
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
6.8 s
BMW4 Series Convertible (G23)420d190 hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
7.6 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
BMW4 Series Convertible (G23)420d (Stage 3)295 hp
166 hp/t
124 kW/t
6.0 kg/hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
BMW4 Series Convertible (G23)420d (Stage 2)257 hp
145 hp/t
108 kW/t
6.9 kg/hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
BMW4 Series Convertible (G23)420d (Stage 1)228 hp
128 hp/t
96 kW/t
7.8 kg/hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
BMW4 Series Convertible (G23)420d190 hp
107 hp/t
80 kW/t
9.3 kg/hp
4.5 L/100 km
52.3 mpg US
62.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Convertible (G23)420d (Stage 3)295 hpBMW4 Series Convertible (G23)420d (Stage 2)257 hpBMW4 Series Convertible (G23)420d (Stage 1)228 hpBMW4 Series Convertible (G23)420d190 hp
Power
295 hp
220 kW
257 hp
191 kW
228 hp
170 kW
190 hp
142 kW
Torque
640 Nm
472 lb-ft
560 Nm
413 lb-ft
500 Nm
369 lb-ft
400 Nm
295 lb-ft
Acceleration
5.8 s
6.3 s
6.8 s
7.6 s
Top speed
279 km/h
173 mph
268 km/h
167 mph
258 km/h
160 mph
236 km/h
147 mph
Lightness
1,775 kg
3,913 lb
1,775 kg
3,913 lb
1,775 kg
3,913 lb
1,775 kg
3,913 lb
Fuel consumption
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
4.5 L/100 km
52.3 mpg US
62.8 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,768 mm
187.7 in
Height
1,384 mm
54.5 in
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,768 mm
187.7 in
Height
1,384 mm
54.5 in
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,768 mm
187.7 in
Height
1,384 mm
54.5 in
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,768 mm
187.7 in
Height
1,384 mm
54.5 in
Range score
1,311 km
815 mi
1,311 km
815 mi
1,311 km
815 mi
1,311 km
815 mi
Trunk score
300 L
10.6 cu ft
300 L
10.6 cu ft
300 L
10.6 cu ft
300 L
10.6 cu ft
Power-to-weight score
166 hp/t
124 kW/t
6.0 kg/hp
145 hp/t
108 kW/t
6.9 kg/hp
128 hp/t
96 kW/t
7.8 kg/hp
107 hp/t
80 kW/t
9.3 kg/hp
Overall
Fixed score
Fixed score
Fixed score
Fixed score

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 3) 295 hpBMW 4 Series Convertible (G23) 420d (Stage 2) 257 hpBMW 4 Series Convertible (G23) 420d (Stage 1) 228 hpBMW 4 Series Convertible (G23) 420d 190 hp
Consumption4.5 L/100 km52.3 mpg US62.8 mpg UK4.5 L/100 km52.3 mpg US62.8 mpg UK4.5 L/100 km52.3 mpg US62.8 mpg UK4.5 L/100 km52.3 mpg US62.8 mpg UK
Cost / 100 km7.88 LC100 km7.88 LC100 km7.88 LC100 km7.88 LC100 km
Cost / 100 mi12.67 LC100 mi12.67 LC100 mi12.67 LC100 mi12.67 LC100 mi
Annual fuel used675 L178 US gal148 UK gal675 L178 US gal148 UK gal675 L178 US gal148 UK gal675 L178 US gal148 UK gal
Annual fuel cost1,181 LC/year1,181 LC/year1,181 LC/year1,181 LC/year

Head-to-head comparisons

BMW 4 Series Convertible (G23) 420d (Stage 3) 295 hp

  • Has 38 hp more
  • Has 80 Nm more
  • Is 0.5 s quicker from 0-100 km/h
  • Has 11 km/h (7 mph) higher top speed
  • Has 21 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Choose cars to compare

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Model
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Engine or modification
BMW 4 Series Convertible (G23) 420d
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BMW4 Series Convertible (G23)420dvsBMW2 Series Convertible (F23)220i
420d
40 TFSI
VS
BMW4 Series Convertible (G23)420dvsAUDIA5 Cabriolet (F5)Facelift 201940 TFSI
420d
Cooper S 2.0
VS
BMW4 Series Convertible (G23)420dvsMiniConvertible (F57)Facelift 2021Cooper S 2.0
420d
CLE 220d
VS
BMW4 Series Convertible (G23)420dvsMercedes-BenzCLE Cabriolet (A236)CLE 220d
BMW 4 Series Convertible (G23) 420d · Stage 3 vs BMW 4 Series Convertible (G23) 420d · Stage 2 vs BMW 4 Series Convertible (G23) 420d · Stage 1 vs BMW 4 Series Convertible (G23) 420d - car comparison - FastVsFaster