Car comparison

BMW 4 Series Convertible (G23) 430ivsMini Convertible (F57) · Facelift 2021 JCW 2.0

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

Mini Convertible (F57) · Facelift 2021

JCW 2.0

231 hp1998 ccGasolineFWDAutomaticTurbochargedCabriolet / convertible2021-2024

Comparison overview

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

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
Highest torque
400 Nm
295 lb-ft
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
56/100
Best performance score
61/100
Best economy score
90/100
Best practicality score
45/100

Mini Convertible (F57) Facelift 2021 JCW 2.0

Lightest
1,375 kg
3,031 lb
Best power-to-weight
168 hp/t
125 kW/t
6.0 kg/hp

Specification comparison

Specification comparison
Model	BMW4 Series Convertible (G23)430i	MiniConvertible (F57)Facelift 2021JCW 2.0
Power	258hp192kW	231hp172kW
Torque	400Nm295lb-ft	320Nm236lb-ft
Curb weight	1,715kg3,781lb	1,375kg3,031lb
Gross weight	2,200kg4,850lb	1,795kg3,957lb
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated	241 km/h 150 mph
To 99% top speed	88.2s99% target: 257 km/h / 160 mph Calculated	84.8s99% target: 239 km/h / 148 mph Calculated
0-100 km/h	6.2s	6.5s
0-200 km/h	22.9s Calculated	27.1s Calculated
0-60 mph	5.9s Calculated	6.2s Calculated
Fuel consumption	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	7.9L/100 km29.8mpg US35.8mpg UK
Fuel consumption highway	5.6L/100 km42mpg US50.4mpg UK	5.6L/100 km42mpg US50.4mpg UK
Quarter mile	14.3s Calculated	14.6s Calculated
Power-to-weight	150hp/t112kW/t68hp/1000 lb Calculated	168hp/t125kW/t76hp/1000 lb Calculated
Torque-to-weight	233Nm/t156lb-ft/ton Calculated	233Nm/t156lb-ft/ton Calculated
Estimated range	922km573mi Calculated	688km427mi Calculated
Displacement	1,998cc122cu in	1,998cc122cu in
Length	4,768mm188in	3,872mm152in
Width	1,852mm73in	1,727mm68in
Height	1,384mm54in	1,415mm56in
Wheelbase	2,851mm112in	2,495mm98in
Front track	1,575mm62in	1,485mm58in
Rear track	1,611mm63in	1,485mm58in
Ground clearance	124mm5in	115mm5in
Trunk volume	300L	160L
Max trunk volume	385L	215L
Doors	2	2
Seats	4	4
Fuel tank	59L	44L

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) 430iMini Convertible (F57) Facelift 2021 JCW 2.0PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW4 Series Convertible (G23)430i	5,000-6,500 rpm	1,550-4,400 rpm	6,750 rpm
MiniConvertible (F57)Facelift 2021JCW 2.0	5,200-6,200 rpm	1,450-4,800 rpm	6,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW4 Series Convertible (G23)430i	MiniConvertible (F57)Facelift 2021JCW 2.0
	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	27.1 s
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Likely limited	241 km/h 150 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	157 km/h 98 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (G23)430i	258 hp 192 kW
MiniConvertible (F57)Facelift 2021JCW 2.0	231 hp 172 kW

BMW 4 Series Convertible (G23) 430i has 27 hp more than Mini Convertible (F57) Facelift 2021 JCW 2.0.

The biggest power difference is between Mini Convertible (F57) Facelift 2021 JCW 2.0 and BMW 4 Series Convertible (G23) 430i: 27 hp (20 kW).

Torque comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (G23)430i	400 Nm 295 lb-ft
MiniConvertible (F57)Facelift 2021JCW 2.0	320 Nm 236 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)430i	1,715 kg 3,781 lb
MiniConvertible (F57)Facelift 2021JCW 2.0	1,375 kg 3,031 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)430i	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
MiniConvertible (F57)Facelift 2021JCW 2.0	241 km/h 150 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)430i	6.2 s
MiniConvertible (F57)Facelift 2021JCW 2.0	6.5 s

The biggest 0-100 km/h difference is between BMW 4 Series Convertible (G23) 430i and Mini Convertible (F57) Facelift 2021 JCW 2.0: 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
Vehicle	Value
BMW4 Series Convertible (G23)430i	6.4 L/100 km 36.8 mpg US 44.1 mpg UK
MiniConvertible (F57)Facelift 2021JCW 2.0	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)430i	150 hp/t 112 kW/t 6.6 kg/hp
MiniConvertible (F57)Facelift 2021JCW 2.0	168 hp/t 125 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)430i	922 km 573 mi
MiniConvertible (F57)Facelift 2021JCW 2.0	688 km 427 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)430i	258 hp 192 kW	6.2 s	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
MiniConvertible (F57)Facelift 2021JCW 2.0	231 hp 172 kW	6.5 s	241 km/h 150 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)430i

Power	258 hp 192 kW
0-100 km/h	6.2 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

MiniConvertible (F57)Facelift 2021JCW 2.0

Power	231 hp 172 kW
0-100 km/h	6.5 s
Top speed 241 km/h 150 mph

Doors/seats	2 doors 4 seats
Trunk	160 L 5.7 cu ft
Length	3,872 mm 152.4 in
Height	1,415 mm 55.7 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)430i

Power	258 hp 192 kW
0-100 km/h	6.2 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

MiniConvertible (F57)Facelift 2021JCW 2.0

Power	231 hp 172 kW
0-100 km/h	6.5 s
Top speed 241 km/h 150 mph

6.4 L/100 km

36.8 mpg US

44.1 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
BMW4 Series Convertible (G23)430i	6.4 L/100 km 36.8 mpg US 44.1 mpg UK	6.2 s
MiniConvertible (F57)Facelift 2021JCW 2.0	6.4 L/100 km 36.8 mpg US 44.1 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
Vehicle	Power-to-weight, hp/t	Fuel 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
MiniConvertible (F57)Facelift 2021JCW 2.0	168 hp/t 125 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)430i

MiniConvertible (F57)Facelift 2021JCW 2.0

Power

258 hp

192 kW

231 hp

172 kW

Torque

400 Nm

295 lb-ft

320 Nm

236 lb-ft

Acceleration

6.2 s

6.5 s

Top speed

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

241 km/h

150 mph

Lightness

1,715 kg

3,781 lb

1,375 kg

3,031 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

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	160 L 5.7 cu ft
Length	3,872 mm 152.4 in
Height	1,415 mm 55.7 in

Range score

922 km

573 mi

688 km

427 mi

Trunk score

300 L

10.6 cu ft

160 L

5.7 cu ft

Power-to-weight score

150 hp/t

112 kW/t

6.6 kg/hp

168 hp/t

125 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) 430i	Mini Convertible (F57) Facelift 2021 JCW 2.0
Consumption	6.4 L/100 km36.8 mpg US44.1 mpg UK	6.4 L/100 km36.8 mpg US44.1 mpg UK
Cost / 100 km	11.20 LC100 km	11.20 LC100 km
Cost / 100 mi	18.02 LC100 mi	18.02 LC100 mi
Annual fuel used	960 L254 US gal211 UK gal	960 L254 US gal211 UK gal
Annual fuel cost	1,680 LC/year	1,680 LC/year