Car comparison

BMW 4 Series Convertible (G23) 430dvsBMW 4 Series Gran Coupe (G26) 430i

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

New comparison

BMW 4 Series Convertible (G23)

430d

286 hp2993 ccDieselRWDAutomaticTurbochargedCabriolet / convertible2021-2024
VS

BMW 4 Series Gran Coupe (G26)

430i

245 hp1998 ccGasolineRWDAutomaticTurbochargedCoupe2021-2024

Comparison overview

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

Best choices

BMW 4 Series Convertible (G23) 430d

  • Quickest 0-100 km/h
    5.8 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    286 hp
    213 kW
  • Highest torque
    650 Nm
    479 lb-ft
  • Best power-to-weight
    152 hp/t
    113 kW/t
    6.6 kg/hp
  • Lowest combined fuel consumption
    6.0 L/100 km
    39.2 mpg US
    47.1 mpg UK
  • Best estimated range
    983 km
    611 mi
  • Best performance score
    68/100
  • Best economy score
    91/100

Specification comparison

Specification comparison
ModelBMW4 Series Convertible (G23)430dBMW4 Series Gran Coupe (G26)430i
Power
286hp213kW
245hp183kW
Torque
650Nm479lb-ft
400Nm295lb-ft
Curb weight
1,880kg4,145lb
1,645kg3,627lb
Gross weight
2,380kg5,247lb
2,200kg4,850lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
83.8s99% target: 257 km/h / 160 mph
Calculated
86.7s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.8s
6.2s
0-200 km/h
21.5s
Calculated
22.7s
Calculated
0-60 mph
5.5s
Calculated
5.9s
Calculated
Fuel consumption
6L/100 km39.2mpg US47.1mpg UK
7.6L/100 km30.9mpg US37.2mpg UK
Quarter mile
13.9s
Calculated
14.3s
Calculated
Power-to-weight
152hp/t113kW/t69hp/1000 lb
Calculated
149hp/t111kW/t68hp/1000 lb
Calculated
Torque-to-weight
346Nm/t231lb-ft/ton
Calculated
243Nm/t163lb-ft/ton
Calculated
Estimated range
983km611mi
Calculated
776km482mi
Calculated
Displacement
2,993cc183cu in
1,998cc122cu in
Length
4,768mm188in
4,783mm188in
Width
1,852mm73in
1,852mm73in
Height
1,384mm54in
1,442mm57in
Wheelbase
2,851mm112in
2,856mm112in
Front track
1,573mm62in
1,595mm63in
Rear track
1,612mm63in
1,623mm64in
Ground clearance
124mm5in
140mm6in
Trunk volume
300L
470L
Max trunk volume
385L
1,290L
Doors
2
5
Seats
4
5
Fuel tank
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) 430dBMW 4 Series Gran Coupe (G26) 430iPowerTorque
  • BMW 4 Series Convertible (G23) 430d: Power / Torque
  • BMW 4 Series Gran Coupe (G26) 430i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Convertible (G23)430d4,000 rpm1,500-2,500 rpm4,250 rpm
BMW4 Series Gran Coupe (G26)430i4,500-6,500 rpm1,600-4,000 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Convertible (G23)430dBMW4 Series Gran Coupe (G26)430i
Acceleration checkpoints
0-60 mph
0-97 km/h
5.5 s
5.9 s
0-100 km/h
0-62 mph
5.8 s
6.2 s
0-200 km/h
0-124 mph
21.5 s
22.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.3 s
2.4 s
330 ft
101 m
6.0 s
6.2 s
1/8 mile
201 m
9.1 s
9.3 s
1000 ft
305 m
11.7 s
12.0 s
1/4 mile
402 m
13.9 s
14.3 s
Trap speed
1/4 mile
402 m
166 km/h
103 mph
163 km/h
101 mph

Power comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)430d
286 hp
213 kW
BMW4 Series Gran Coupe (G26)430i
245 hp
183 kW

BMW 4 Series Convertible (G23) 430d has 41 hp more than BMW 4 Series Gran Coupe (G26) 430i.

The biggest power difference is between BMW 4 Series Gran Coupe (G26) 430i and BMW 4 Series Convertible (G23) 430d: 41 hp (31 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)430d
650 Nm
479 lb-ft
BMW4 Series Gran Coupe (G26)430i
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)430d
1,880 kg
4,145 lb
BMW4 Series Gran Coupe (G26)430i
1,645 kg
3,627 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)430d
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW4 Series Gran Coupe (G26)430i
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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)430d5.8 s
BMW4 Series Gran Coupe (G26)430i6.2 s

The biggest 0-100 km/h difference is between BMW 4 Series Convertible (G23) 430d and BMW 4 Series Gran Coupe (G26) 430i: 0.4 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)430d
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
BMW4 Series Gran Coupe (G26)430i
7.6 L/100 km
30.9 mpg US
37.2 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Convertible (G23) 430d and BMW 4 Series Gran Coupe (G26) 430i: 1.6 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)430d
152 hp/t
113 kW/t
6.6 kg/hp
BMW4 Series Gran Coupe (G26)430i
149 hp/t
111 kW/t
6.7 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)430d
983 km
611 mi
BMW4 Series Gran Coupe (G26)430i
776 km
482 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Convertible (G23)430d
286 hp
213 kW
5.8 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW4 Series Gran Coupe (G26)430i
245 hp
183 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)430d
Power
286 hp
213 kW
0-100 km/h5.8 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 Gran Coupe (G26)430i
Power
245 hp
183 kW
0-100 km/h6.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
470 L
16.6 cu ft
Length
4,783 mm
188.3 in
Height
1,442 mm
56.8 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)430d
Power
286 hp
213 kW
0-100 km/h5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
BMW4 Series Gran Coupe (G26)430i
Power
245 hp
183 kW
0-100 km/h6.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
7.6 L/100 km
30.9 mpg US
37.2 mpg UK

BMW 4 Series Convertible (G23) 430d 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)430d
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
5.8 s
BMW4 Series Gran Coupe (G26)430i
7.6 L/100 km
30.9 mpg US
37.2 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)430d
152 hp/t
113 kW/t
6.6 kg/hp
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
BMW4 Series Gran Coupe (G26)430i
149 hp/t
111 kW/t
6.7 kg/hp
7.6 L/100 km
30.9 mpg US
37.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Convertible (G23)430dBMW4 Series Gran Coupe (G26)430i
Power
286 hp
213 kW
245 hp
183 kW
Torque
650 Nm
479 lb-ft
400 Nm
295 lb-ft
Acceleration
5.8 s
6.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,880 kg
4,145 lb
1,645 kg
3,627 lb
Fuel consumption
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
7.6 L/100 km
30.9 mpg US
37.2 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
5 doors
5 seats
Trunk
470 L
16.6 cu ft
Length
4,783 mm
188.3 in
Height
1,442 mm
56.8 in
Range score
983 km
611 mi
776 km
482 mi
Trunk score
300 L
10.6 cu ft
470 L
16.6 cu ft
Power-to-weight score
152 hp/t
113 kW/t
6.6 kg/hp
149 hp/t
111 kW/t
6.7 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) 430dBMW 4 Series Gran Coupe (G26) 430i
Consumption6 L/100 km39.2 mpg US47.1 mpg UK7.6 L/100 km30.9 mpg US37.2 mpg UK
Cost / 100 km10.50 LC100 km13.30 LC100 km
Cost / 100 mi16.90 LC100 mi21.40 LC100 mi
Annual fuel used900 L238 US gal198 UK gal1,140 L301 US gal251 UK gal
Annual fuel cost1,575 LC/year1,995 LC/year

Head-to-head comparisons

BMW 4 Series Convertible (G23) 430d

  • Has 41 hp more
  • Has 250 Nm more
  • Is 0.4 s quicker from 0-100 km/h
  • Uses 1.6 L/100 km less fuel
  • Has 3 hp/t better power-to-weight
  • Has 207 km (129 mi) more estimated range

Pros

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

Cons

  • Heaviest
  • Smallest trunk

BMW 4 Series Gran Coupe (G26) 430i

  • Is 235 kg lighter
  • Has 170 L more trunk volume

Pros

  • Lightest
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 4 Series Convertible (G23) 430d
BMW 4 Series Gran Coupe (G26) 430i
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