Car comparison

BMW 4 Series Convertible (G23) 430ivsBMW 4 Series Coupe (F32) 425d

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

New comparison

BMW 4 Series Convertible (G23)

430i

258 hp1998 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2020-2024
VS

BMW 4 Series Coupe (F32)

425d

218 hp1995 ccDieselRWDAutomaticTurbochargedCoupe2014-2016

Comparison overview

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

Best choices

BMW 4 Series Coupe (F32) 425d

  • Highest torque
    450 Nm
    332 lb-ft
  • Lightest
    1,505 kg
    3,318 lb
  • Lowest combined fuel consumption
    4.9 L/100 km
    48.0 mpg US
    57.6 mpg UK
  • Lowest city consumption
    5.9 L/100 km
    39.9 mpg US
    47.9 mpg UK
  • Lowest highway consumption
    4.3 L/100 km
    54.7 mpg US
    65.7 mpg UK
  • Best estimated range
    1,163 km
    723 mi
  • Largest trunk
    445 L
  • Best overall score
    57/100
  • Best economy score
    94/100
  • Best practicality score
    53/100

BMW 4 Series Convertible (G23) 430i

  • Quickest 0-100 km/h
    6.2 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    258 hp
    192 kW
  • Best power-to-weight
    150 hp/t
    112 kW/t
    6.6 kg/hp
  • Best performance score
    61/100

Specification comparison

Specification comparison
ModelBMW4 Series Convertible (G23)430iBMW4 Series Coupe (F32)425d
Power
258hp192kW
218hp163kW
Torque
400Nm295lb-ft
450Nm332lb-ft
Curb weight
1,715kg3,781lb
1,505kg3,318lb
Gross weight
2,200kg4,850lb
2,025kg4,464lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
247 km/h
153 mph
To 99% top speed
88.4s99% target: 257 km/h / 160 mph
Calculated
83.9s99% target: 245 km/h / 152 mph
Calculated
0-100 km/h
6.2s
6.5s
0-200 km/h
22.9s
Calculated
25.4s
Calculated
0-60 mph
5.9s
Calculated
6.2s
Calculated
Fuel consumption
6.4L/100 km36.8mpg US44.1mpg UK
4.9L/100 km48mpg US57.6mpg UK
Fuel consumption city
7.8L/100 km30.2mpg US36.2mpg UK
5.9L/100 km39.9mpg US47.9mpg UK
Fuel consumption highway
5.6L/100 km42mpg US50.4mpg UK
4.3L/100 km54.7mpg US65.7mpg UK
Quarter mile
14.3s
Calculated
14.6s
Calculated
Power-to-weight
150hp/t112kW/t68hp/1000 lb
Calculated
145hp/t108kW/t66hp/1000 lb
Calculated
Torque-to-weight
233Nm/t156lb-ft/ton
Calculated
299Nm/t200lb-ft/ton
Calculated
Estimated range
922km573mi
Calculated
1,163km723mi
Calculated
Displacement
1,998cc122cu in
1,995cc122cu in
Length
4,768mm188in
4,638mm183in
Width
1,852mm73in
1,825mm72in
Height
1,384mm54in
1,377mm54in
Wheelbase
2,851mm112in
2,810mm111in
Front track
1,575mm62in
1,545mm61in
Rear track
1,611mm63in
1,594mm63in
Ground clearance
124mm5in
130mm5in
Trunk volume
300L
445L
Max trunk volume
385L
-
Doors
2
2
Seats
4
4
Fuel tank
59L
57L
CO2 emissions-
128g/km

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) 430iBMW 4 Series Coupe (F32) 425dPowerTorque
  • BMW 4 Series Convertible (G23) 430i: Power / Torque
  • BMW 4 Series Coupe (F32) 425d: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Convertible (G23)430i5,000-6,500 rpm1,550-4,400 rpm6,750 rpm
BMW4 Series Coupe (F32)425d4,000 rpm1,500 rpm4,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Convertible (G23)430iBMW4 Series Coupe (F32)425d
Acceleration checkpoints
0-60 mph
0-97 km/h
5.9 s
6.2 s
0-100 km/h
0-62 mph
6.2 s
6.5 s
0-200 km/h
0-124 mph
22.9 s
25.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
247 km/h
153 mph
Drag race simulation
60 ft
18 m
2.3 s
2.4 s
330 ft
101 m
6.2 s
6.3 s
1/8 mile
201 m
9.3 s
9.5 s
1000 ft
305 m
12.0 s
12.3 s
1/4 mile
402 m
14.3 s
14.6 s
Trap speed
1/4 mile
402 m
163 km/h
101 mph
159 km/h
99 mph

Power comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)430i
258 hp
192 kW
BMW4 Series Coupe (F32)425d
218 hp
163 kW

BMW 4 Series Convertible (G23) 430i has 40 hp more than BMW 4 Series Coupe (F32) 425d.

The biggest power difference is between BMW 4 Series Coupe (F32) 425d and BMW 4 Series Convertible (G23) 430i: 40 hp (30 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)430i
400 Nm
295 lb-ft
BMW4 Series Coupe (F32)425d
450 Nm
332 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)430i
1,715 kg
3,781 lb
BMW4 Series Coupe (F32)425d
1,505 kg
3,318 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
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW4 Series Coupe (F32)425d
247 km/h
153 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)430i6.2 s
BMW4 Series Coupe (F32)425d6.5 s

The biggest 0-100 km/h difference is between BMW 4 Series Convertible (G23) 430i and BMW 4 Series Coupe (F32) 425d: 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
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Coupe (F32)425d
4.9 L/100 km
48.0 mpg US
57.6 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Coupe (F32) 425d and BMW 4 Series Convertible (G23) 430i: 1.5 L/100 km.

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
150 hp/t
112 kW/t
6.6 kg/hp
BMW4 Series Coupe (F32)425d
145 hp/t
108 kW/t
6.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)430i
922 km
573 mi
BMW4 Series Coupe (F32)425d
1,163 km
723 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Convertible (G23)430i
258 hp
192 kW
6.2 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW4 Series Coupe (F32)425d
218 hp
163 kW
6.5 s
247 km/h
153 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
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
BMW4 Series Coupe (F32)425d
Power
218 hp
163 kW
0-100 km/h6.5 s
Top speed
247 km/h
153 mph
Doors/seats
2 doors
4 seats
Trunk
445 L
15.7 cu ft
Length
4,638 mm
182.6 in
Height
1,377 mm
54.2 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
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
BMW4 Series Coupe (F32)425d
Power
218 hp
163 kW
0-100 km/h6.5 s
Top speed
247 km/h
153 mph
4.9 L/100 km
48.0 mpg US
57.6 mpg UK

BMW 4 Series Convertible (G23) 430i 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
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
6.2 s
BMW4 Series Coupe (F32)425d
4.9 L/100 km
48.0 mpg US
57.6 mpg UK
6.5 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
150 hp/t
112 kW/t
6.6 kg/hp
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
BMW4 Series Coupe (F32)425d
145 hp/t
108 kW/t
6.9 kg/hp
4.9 L/100 km
48.0 mpg US
57.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Convertible (G23)430iBMW4 Series Coupe (F32)425d
Power
258 hp
192 kW
218 hp
163 kW
Torque
400 Nm
295 lb-ft
450 Nm
332 lb-ft
Acceleration
6.2 s
6.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
247 km/h
153 mph
Lightness
1,715 kg
3,781 lb
1,505 kg
3,318 lb
Fuel consumption
6.4 L/100 km
36.8 mpg US
44.1 mpg UK
4.9 L/100 km
48.0 mpg US
57.6 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
445 L
15.7 cu ft
Length
4,638 mm
182.6 in
Height
1,377 mm
54.2 in
Range score
922 km
573 mi
1,163 km
723 mi
CO2 score
-
128 g/km
Trunk score
300 L
10.6 cu ft
445 L
15.7 cu ft
Power-to-weight score
150 hp/t
112 kW/t
6.6 kg/hp
145 hp/t
108 kW/t
6.9 kg/hp
Overall
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) 430iBMW 4 Series Coupe (F32) 425d
Consumption6.4 L/100 km36.8 mpg US44.1 mpg UK4.9 L/100 km48 mpg US57.6 mpg UK
Cost / 100 km11.20 LC100 km8.58 LC100 km
Cost / 100 mi18.02 LC100 mi13.80 LC100 mi
Annual fuel used960 L254 US gal211 UK gal735 L194 US gal162 UK gal
Annual fuel cost1,680 LC/year1,286 LC/year

Head-to-head comparisons

BMW 4 Series Convertible (G23) 430i

  • Has 40 hp more
  • Is 0.3 s quicker from 0-100 km/h
  • Has 13 km/h (8 mph) higher top speed
  • Has 6 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Best power-to-weight ratio

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk

BMW 4 Series Coupe (F32) 425d

  • Has 50 Nm more
  • Is 210 kg lighter
  • Uses 1.5 L/100 km less fuel
  • Has 241 km (150 mi) more estimated range
  • Has 145 L more trunk volume

Pros

  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 4 Series Convertible (G23) 430i
BMW 4 Series Coupe (F32) 425d
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