Car comparison

BMW 4 Series Convertible (G23) 430i · Stage 3vsBMW 4 Series Convertible (G23) 430i · Stage 2vsBMW 4 Series Convertible (G23) 430i · Stage 1vsBMW 4 Series Convertible (G23) 430i

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

New comparison

BMW 4 Series Convertible (G23)

430i (Stage 3)

387 hp1998 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2020-2024
VS

BMW 4 Series Convertible (G23)

430i (Stage 2)

335 hp1998 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2020-2024
VS

BMW 4 Series Convertible (G23)

430i (Stage 1)

304 hp1998 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2020-2024
VS

BMW 4 Series Convertible (G23)

430i

258 hp1998 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2020-2024

Comparison overview

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

Best choices

BMW 4 Series Convertible (G23) 430i (Stage 3) 387 hp

  • Quickest 0-100 km/h
    4.8 s
  • Fastest top speed
    292 km/h
    181 mph
  • Most powerful
    387 hp
    289 kW
  • Highest torque
    620 Nm
    457 lb-ft
  • Lightest
    1,715 kg
    3,781 lb
  • Best power-to-weight
    226 hp/t
    168 kW/t
    4.4 kg/hp
  • Lowest combined fuel consumption
    6.4 L/100 km
    36.8 mpg US
    44.1 mpg UK
  • Lowest city consumption
    7.8 L/100 km
    30.2 mpg US
    36.2 mpg UK
  • Lowest highway consumption
    5.6 L/100 km
    42.0 mpg US
    50.4 mpg UK
  • Best estimated range
    922 km
    573 mi
  • Largest trunk
    300 L
  • Best overall score
    68/100
  • Best performance score
    79/100
  • Best economy score
    90/100
  • Best practicality score
    45/100

Specification comparison

Specification comparison
ModelBMW4 Series Convertible (G23)430i (Stage 3)387 hpBMW4 Series Convertible (G23)430i (Stage 2)335 hpBMW4 Series Convertible (G23)430i (Stage 1)304 hpBMW4 Series Convertible (G23)430i258 hp
Power
387hp289kW+129 hp
335hp250kW+77 hp
304hp227kW+46 hp
258hp192kW
Torque
620Nm457lb-ft+220 Nm
540Nm398lb-ft+140 Nm
488Nm360lb-ft+88 Nm
400Nm295lb-ft
Curb weight
1,715kg3,781lb
1,715kg3,781lb
1,715kg3,781lb
1,715kg3,781lb
Gross weight
2,200kg4,850lb
2,200kg4,850lb
2,200kg4,850lb
2,200kg4,850lb
Top speed
292 km/h
181 mph
+32 km/h
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
+30 km/h
Calculated
273 km/h
170 mph
+13 km/h
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
71.7s99% target: 289 km/h / 180 mph-16.8 s
Calculated
81.6s99% target: 287 km/h / 178 mph-6.8 s
Calculated
81.9s99% target: 270 km/h / 168 mph-6.5 s
Calculated
88.4s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.8s-1.4 s
5.3s-0.9 s
5.6s-0.6 s
6.2s
0-200 km/h
15.1s-7.8 s
Calculated
16.9s-6.0 s
Calculated
19.2s-3.7 s
Calculated
22.9s
Calculated
0-60 mph
4.6s-1.3 s
Calculated
5.0s-0.9 s
Calculated
5.3s-0.6 s
Calculated
5.9s
Calculated
Fuel consumption
6.4L/100 km36.8mpg US44.1mpg UK
6.4L/100 km36.8mpg US44.1mpg UK
6.4L/100 km36.8mpg US44.1mpg UK
6.4L/100 km36.8mpg US44.1mpg UK
Fuel consumption city
7.8L/100 km30.2mpg US36.2mpg UK
7.8L/100 km30.2mpg US36.2mpg UK
7.8L/100 km30.2mpg US36.2mpg UK
7.8L/100 km30.2mpg US36.2mpg UK
Fuel consumption highway
5.6L/100 km42mpg US50.4mpg UK
5.6L/100 km42mpg US50.4mpg UK
5.6L/100 km42mpg US50.4mpg UK
5.6L/100 km42mpg US50.4mpg UK
Quarter mile
12.8s-1.5 s
Calculated
13.3s-1.0 s
Calculated
13.7s-0.6 s
Calculated
14.3s
Calculated
Power-to-weight
226hp/t168kW/t102hp/1000 lb
Calculated
196hp/t146kW/t89hp/1000 lb
Calculated
178hp/t132kW/t81hp/1000 lb
Calculated
150hp/t112kW/t68hp/1000 lb
Calculated
Torque-to-weight
362Nm/t242lb-ft/ton
Calculated
315Nm/t211lb-ft/ton
Calculated
285Nm/t190lb-ft/ton
Calculated
233Nm/t156lb-ft/ton
Calculated
Estimated range
922km573mi
Calculated
922km573mi
Calculated
922km573mi
Calculated
922km573mi
Calculated
Displacement
1,998cc122cu in
1,998cc122cu in
1,998cc122cu in
1,998cc122cu 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) 430i (Stage 3) 387 hpBMW 4 Series Convertible (G23) 430i (Stage 2) 335 hpBMW 4 Series Convertible (G23) 430i (Stage 1) 304 hpBMW 4 Series Convertible (G23) 430i 258 hpPowerTorque
  • BMW 4 Series Convertible (G23) 430i (Stage 3) 387 hp: Power / Torque
  • BMW 4 Series Convertible (G23) 430i (Stage 2) 335 hp: Power / Torque
  • BMW 4 Series Convertible (G23) 430i (Stage 1) 304 hp: Power / Torque
  • BMW 4 Series Convertible (G23) 430i 258 hp: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Convertible (G23)430i (Stage 3)387 hp5,000-6,500 rpm1,550-4,400 rpm6,750 rpm
BMW4 Series Convertible (G23)430i (Stage 2)335 hp5,000-6,500 rpm1,550-4,400 rpm6,750 rpm
BMW4 Series Convertible (G23)430i (Stage 1)304 hp5,000-6,500 rpm1,550-4,400 rpm6,750 rpm
BMW4 Series Convertible (G23)430i258 hp5,000-6,500 rpm1,550-4,400 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Convertible (G23)430i (Stage 3)387 hpBMW4 Series Convertible (G23)430i (Stage 2)335 hpBMW4 Series Convertible (G23)430i (Stage 1)304 hpBMW4 Series Convertible (G23)430i258 hp
Acceleration checkpoints
0-60 mph
0-97 km/h
4.6 s
5.0 s
5.3 s
5.9 s
0-100 km/h
0-62 mph
4.8 s
5.3 s
5.6 s
6.2 s
0-200 km/h
0-124 mph
15.1 s
16.9 s
19.2 s
22.9 s
Top speed
292 km/h
181 mph
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
Likely limited
273 km/h
170 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.2 s
2.3 s
2.3 s
330 ft
101 m
5.7 s
5.9 s
6.0 s
6.2 s
1/8 mile
201 m
8.4 s
8.8 s
9.0 s
9.3 s
1000 ft
305 m
10.8 s
11.2 s
11.5 s
12.0 s
1/4 mile
402 m
12.8 s
13.3 s
13.7 s
14.3 s
Trap speed
1/4 mile
402 m
185 km/h
115 mph
178 km/h
110 mph
171 km/h
106 mph
163 km/h
101 mph

Power comparison

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

BMW 4 Series Convertible (G23) 430i (Stage 3) 387 hp has 129 hp more than BMW 4 Series Convertible (G23) 430i 258 hp.

The biggest power difference is between BMW 4 Series Convertible (G23) 430i 258 hp and BMW 4 Series Convertible (G23) 430i (Stage 3) 387 hp: 129 hp (96 kW).

Torque comparison

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

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / 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)430i (Stage 3)387 hp
292 km/h
181 mph
BMW4 Series Convertible (G23)430i (Stage 2)335 hp
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
BMW4 Series Convertible (G23)430i (Stage 1)304 hp
273 km/h
170 mph
BMW4 Series Convertible (G23)430i258 hp
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

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

The biggest 0-100 km/h difference is between BMW 4 Series Convertible (G23) 430i (Stage 3) 387 hp and BMW 4 Series Convertible (G23) 430i 258 hp: 1.4 s.

The closest cars by acceleration are BMW 4 Series Convertible (G23) 430i (Stage 2) 335 hp and BMW 4 Series Convertible (G23) 430i (Stage 1) 304 hp, separated by only 0.3 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)430i (Stage 3)387 hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Convertible (G23)430i (Stage 2)335 hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Convertible (G23)430i (Stage 1)304 hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Convertible (G23)430i258 hp
6.4 L/100 km
36.8 mpg US
44.1 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)430i (Stage 3)387 hp
226 hp/t
168 kW/t
4.4 kg/hp
BMW4 Series Convertible (G23)430i (Stage 2)335 hp
196 hp/t
146 kW/t
5.1 kg/hp
BMW4 Series Convertible (G23)430i (Stage 1)304 hp
178 hp/t
132 kW/t
5.6 kg/hp
BMW4 Series Convertible (G23)430i258 hp
150 hp/t
112 kW/t
6.6 kg/hp

Estimated range comparison

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

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Convertible (G23)430i (Stage 3)387 hp
387 hp
289 kW
4.8 s
292 km/h
181 mph
BMW4 Series Convertible (G23)430i (Stage 2)335 hp
335 hp
250 kW
5.3 s
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
BMW4 Series Convertible (G23)430i (Stage 1)304 hp
304 hp
227 kW
5.6 s
273 km/h
170 mph
BMW4 Series Convertible (G23)430i258 hp
258 hp
192 kW
6.2 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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)430i (Stage 3)387 hp
Power
387 hp
289 kW
0-100 km/h4.8 s
Top speed
292 km/h
181 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)430i (Stage 2)335 hp
Power
335 hp
250 kW
0-100 km/h5.3 s
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 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)430i (Stage 1)304 hp
Power
304 hp
227 kW
0-100 km/h5.6 s
Top speed
273 km/h
170 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)430i258 hp
Power
258 hp
192 kW
0-100 km/h6.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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)430i (Stage 3)387 hp
Power
387 hp
289 kW
0-100 km/h4.8 s
Top speed
292 km/h
181 mph
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Convertible (G23)430i (Stage 2)335 hp
Power
335 hp
250 kW
0-100 km/h5.3 s
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Convertible (G23)430i (Stage 1)304 hp
Power
304 hp
227 kW
0-100 km/h5.6 s
Top speed
273 km/h
170 mph
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Convertible (G23)430i258 hp
Power
258 hp
192 kW
0-100 km/h6.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.4 L/100 km
36.8 mpg US
44.1 mpg UK

BMW 4 Series Convertible (G23) 430i (Stage 3) 387 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)430i (Stage 3)387 hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
4.8 s
BMW4 Series Convertible (G23)430i (Stage 2)335 hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
5.3 s
BMW4 Series Convertible (G23)430i (Stage 1)304 hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
5.6 s
BMW4 Series Convertible (G23)430i258 hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
6.2 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)430i (Stage 3)387 hp
226 hp/t
168 kW/t
4.4 kg/hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Convertible (G23)430i (Stage 2)335 hp
196 hp/t
146 kW/t
5.1 kg/hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Convertible (G23)430i (Stage 1)304 hp
178 hp/t
132 kW/t
5.6 kg/hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Convertible (G23)430i258 hp
150 hp/t
112 kW/t
6.6 kg/hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Convertible (G23)430i (Stage 3)387 hpBMW4 Series Convertible (G23)430i (Stage 2)335 hpBMW4 Series Convertible (G23)430i (Stage 1)304 hpBMW4 Series Convertible (G23)430i258 hp
Power
387 hp
289 kW
335 hp
250 kW
304 hp
227 kW
258 hp
192 kW
Torque
620 Nm
457 lb-ft
540 Nm
398 lb-ft
488 Nm
360 lb-ft
400 Nm
295 lb-ft
Acceleration
4.8 s
5.3 s
5.6 s
6.2 s
Top speed
292 km/h
181 mph
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
273 km/h
170 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,715 kg
3,781 lb
1,715 kg
3,781 lb
1,715 kg
3,781 lb
1,715 kg
3,781 lb
Fuel consumption
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
6.4 L/100 km
36.8 mpg US
44.1 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
922 km
573 mi
922 km
573 mi
922 km
573 mi
922 km
573 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
226 hp/t
168 kW/t
4.4 kg/hp
196 hp/t
146 kW/t
5.1 kg/hp
178 hp/t
132 kW/t
5.6 kg/hp
150 hp/t
112 kW/t
6.6 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) 430i (Stage 3) 387 hpBMW 4 Series Convertible (G23) 430i (Stage 2) 335 hpBMW 4 Series Convertible (G23) 430i (Stage 1) 304 hpBMW 4 Series Convertible (G23) 430i 258 hp
Consumption6.4 L/100 km36.8 mpg US44.1 mpg UK6.4 L/100 km36.8 mpg US44.1 mpg UK6.4 L/100 km36.8 mpg US44.1 mpg UK6.4 L/100 km36.8 mpg US44.1 mpg UK
Cost / 100 km11.20 LC100 km11.20 LC100 km11.20 LC100 km11.20 LC100 km
Cost / 100 mi18.02 LC100 mi18.02 LC100 mi18.02 LC100 mi18.02 LC100 mi
Annual fuel used960 L254 US gal211 UK gal960 L254 US gal211 UK gal960 L254 US gal211 UK gal960 L254 US gal211 UK gal
Annual fuel cost1,680 LC/year1,680 LC/year1,680 LC/year1,680 LC/year

Head-to-head comparisons

BMW 4 Series Convertible (G23) 430i (Stage 3) 387 hp

  • Has 52 hp more
  • Has 80 Nm more
  • Is 0.5 s quicker from 0-100 km/h
  • Has 2 km/h (1 mph) higher top speed
  • Has 30 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

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Popular comparisons

BMW 4 Series Convertible (G23) 430i · Stage 3 vs BMW 4 Series Convertible (G23) 430i · Stage 2 vs BMW 4 Series Convertible (G23) 430i · Stage 1 vs BMW 4 Series Convertible (G23) 430i - car comparison - FastVsFaster