Car comparison

BMW 4 Series Convertible (G23) 430dvsBMW 4 Series Coupe (F32) 428i

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

BMW 4 Series Coupe (F32)

428i

245 hp1997 ccGasolineRWDAutomaticTurbochargedCoupe2013-2016

Comparison overview

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

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
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 overall score
61/100
Best performance score
68/100
Best economy score
91/100

BMW 4 Series Coupe (F32) 428i

Lightest
1,470 kg
3,241 lb
Best power-to-weight
167 hp/t
124 kW/t
6.0 kg/hp
Largest trunk
445 L
Best practicality score
53/100

Specification comparison

Specification comparison
Model	BMW4 Series Convertible (G23)430d	BMW4 Series Coupe (F32)428i
Power	286hp213kW	245hp183kW
Torque	650Nm479lb-ft	350Nm258lb-ft
Curb weight	1,880kg4,145lb	1,470kg3,241lb
Gross weight	2,380kg5,247lb	1,990kg4,387lb
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	79.2s99% target: 257 km/h / 160 mph Calculated
0-100 km/h	5.8s	5.8s
0-200 km/h	21.5s Calculated	21.0s Calculated
0-60 mph	5.5s Calculated	5.5s Calculated
Fuel consumption	6L/100 km39.2mpg US47.1mpg UK	6.4L/100 km36.8mpg US44.1mpg UK
Fuel consumption city	-	8.3L/100 km28.3mpg US34.0mpg UK
Fuel consumption highway	-	5.3L/100 km44.4mpg US53.3mpg UK
Quarter mile	13.9s Calculated	13.9s Calculated
Power-to-weight	152hp/t113kW/t69hp/1000 lb Calculated	167hp/t124kW/t76hp/1000 lb Calculated
Torque-to-weight	346Nm/t231lb-ft/ton Calculated	238Nm/t159lb-ft/ton Calculated
Estimated range	983km611mi Calculated	938km583mi Calculated
Displacement	2,993cc183cu in	1,997cc122cu in
Length	4,768mm188in	4,638mm183in
Width	1,852mm73in	1,825mm72in
Height	1,384mm54in	1,377mm54in
Wheelbase	2,851mm112in	2,810mm111in
Front track	1,573mm62in	1,545mm61in
Rear track	1,612mm63in	1,594mm63in
Ground clearance	124mm5in	130mm5in
Trunk volume	300L	445L
Max trunk volume	385L	-
Doors	2	2
Seats	4	4
Fuel tank	59L	60L

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 Coupe (F32) 428iPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW4 Series Convertible (G23)430d	4,000 rpm	1,500-2,500 rpm	4,250 rpm
BMW4 Series Coupe (F32)428i	5,000-6,500 rpm	1,250-4,800 rpm	6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW4 Series Convertible (G23)430d	BMW4 Series Coupe (F32)428i
	Acceleration checkpoints
0-60 mph 0-97 km/h	5.5 s	5.5 s
0-100 km/h 0-62 mph	5.8 s	5.8 s
0-200 km/h 0-124 mph	21.5 s	21.0 s
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Limited	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Limited
	Drag race simulation
60 ft 18 m	2.3 s	2.3 s
330 ft 101 m	6.0 s	6.1 s
1/8 mile 201 m	9.1 s	9.1 s
1000 ft 305 m	11.7 s	11.7 s
1/4 mile 402 m	13.9 s	13.9 s
Trap speed 1/4 mile 402 m	166 km/h 103 mph	167 km/h 104 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (G23)430d	286 hp 213 kW
BMW4 Series Coupe (F32)428i	245 hp 183 kW

BMW 4 Series Convertible (G23) 430d has 41 hp more than BMW 4 Series Coupe (F32) 428i.

The biggest power difference is between BMW 4 Series Coupe (F32) 428i 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
Vehicle	Value
BMW4 Series Convertible (G23)430d	650 Nm 479 lb-ft
BMW4 Series Coupe (F32)428i	350 Nm 258 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (G23)430d	1,880 kg 4,145 lb
BMW4 Series Coupe (F32)428i	1,470 kg 3,241 lb

Top speed without limiter comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (G23)430d	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
BMW4 Series Coupe (F32)428i	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
Vehicle	Value
BMW4 Series Convertible (G23)430d	5.8 s
BMW4 Series Coupe (F32)428i	5.8 s

Fuel consumption comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (G23)430d	6.0 L/100 km 39.2 mpg US 47.1 mpg UK
BMW4 Series Coupe (F32)428i	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
Vehicle	Value
BMW4 Series Convertible (G23)430d	152 hp/t 113 kW/t 6.6 kg/hp
BMW4 Series Coupe (F32)428i	167 hp/t 124 kW/t 6.0 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (G23)430d	983 km 611 mi
BMW4 Series Coupe (F32)428i	938 km 583 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top 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 Coupe (F32)428i	245 hp 183 kW	5.8 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.

Vehicle

Performance score

Practicality score

BMW4 Series Convertible (G23)430d

Power	286 hp 213 kW
0-100 km/h	5.8 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 Coupe (F32)428i

Power	245 hp 183 kW
0-100 km/h	5.8 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 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.

Vehicle

Performance score

Fuel economy score

BMW4 Series Convertible (G23)430d

Power	286 hp 213 kW
0-100 km/h	5.8 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 Coupe (F32)428i

Power	245 hp 183 kW
0-100 km/h	5.8 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) 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
Vehicle	Fuel consumption, L/100 km	0-100 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 Coupe (F32)428i	6.4 L/100 km 36.8 mpg US 44.1 mpg UK	5.8 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
Vehicle	Power-to-weight, hp/t	Fuel 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 Coupe (F32)428i	167 hp/t 124 kW/t 6.0 kg/hp	6.4 L/100 km 36.8 mpg US 44.1 mpg UK

Detailed score breakdown

Vehicle

BMW4 Series Convertible (G23)430d

BMW4 Series Coupe (F32)428i

Power

286 hp

213 kW

245 hp

183 kW

Torque

650 Nm

479 lb-ft

350 Nm

258 lb-ft

Acceleration

5.8 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

1,470 kg

3,241 lb

Fuel consumption

6.0 L/100 km

39.2 mpg US

47.1 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	445 L 15.7 cu ft
Length	4,638 mm 182.6 in
Height	1,377 mm 54.2 in

Range score

983 km

611 mi

938 km

583 mi

Trunk score

300 L

10.6 cu ft

445 L

15.7 cu ft

Power-to-weight score

152 hp/t

113 kW/t

6.6 kg/hp

167 hp/t

124 kW/t

6.0 kg/hp

Overall

Fixed score

Fuel cost and annual usage

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

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	BMW 4 Series Convertible (G23) 430d	BMW 4 Series Coupe (F32) 428i
Consumption	6 L/100 km39.2 mpg US47.1 mpg UK	6.4 L/100 km36.8 mpg US44.1 mpg UK
Cost / 100 km	10.50 LC100 km	11.20 LC100 km
Cost / 100 mi	16.90 LC100 mi	18.02 LC100 mi
Annual fuel used	900 L238 US gal198 UK gal	960 L254 US gal211 UK gal
Annual fuel cost	1,575 LC/year	1,680 LC/year