Car comparison

BMW 4 Series Convertible (F33) 420ivsAbarth 124 Spider 1.4 MultiAir

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

New comparison

BMW 4 Series Convertible (F33)

420i

184 hp1998 ccGasolineRWDManualTurbochargedCabriolet / convertible2016-2016

Abarth 124 Spider

1.4 MultiAir

170 hp1368 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2016-2019

Comparison overview

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

BMW 4 Series Convertible (F33) 420i

Fastest top speed
230 km/h
143 mph
Most powerful
184 hp
137 kW
Highest torque
270 Nm
199 lb-ft
Lowest combined fuel consumption
6.6 L/100 km
35.6 mpg US
42.8 mpg UK
Lowest city consumption
8.6 L/100 km
27.4 mpg US
32.8 mpg UK
Lowest CO2 emissions
153 g/km
Best estimated range
909 km
565 mi
Best overall score
46/100
Best economy score
89/100
Best practicality score
47/100

Abarth 124 Spider 1.4 MultiAir

Quickest 0-100 km/h
6.9 s
Lightest
1,060 kg
2,337 lb
Best power-to-weight
160 hp/t
120 kW/t
6.2 kg/hp
Lowest highway consumption
5.1 L/100 km
46.1 mpg US
55.4 mpg UK
Best performance score
52/100

Specification comparison

Specification comparison
Model	BMW4 Series Convertible (F33)420i	Abarth124 Spider1.4 MultiAir
Power	184hp137kW	170hp127kW
Torque	270Nm199lb-ft	250Nm184lb-ft
Curb weight	1,700kg3,748lb	1,060kg2,337lb
Gross weight	2,170kg4,784lb	-
Top speed	230 km/h 143 mph	229 km/h 142 mph
To 99% top speed	105.4s99% target: 228 km/h / 141 mph Calculated	73.5s99% target: 227 km/h / 141 mph Calculated
0-100 km/h	8.2s	6.9s
0-200 km/h	38.9s Calculated	29.6s Calculated
0-60 mph	7.7s Calculated	6.5s Calculated
Fuel consumption	6.6L/100 km35.6mpg US42.8mpg UK	6.6L/100 km35.6mpg US42.8mpg UK
Fuel consumption city	8.6L/100 km27.4mpg US32.8mpg UK	9.1L/100 km25.8mpg US31.0mpg UK
Fuel consumption highway	5.5L/100 km42.8mpg US51.4mpg UK	5.1L/100 km46.1mpg US55.4mpg UK
Quarter mile	15.9s Calculated	14.9s Calculated
Power-to-weight	108hp/t81kW/t49hp/1000 lb Calculated	160hp/t120kW/t73hp/1000 lb Calculated
Torque-to-weight	159Nm/t106lb-ft/ton Calculated	236Nm/t158lb-ft/ton Calculated
Estimated range	909km565mi Calculated	682km424mi Calculated
Displacement	1,998cc122cu in	1,368cc83cu in
Length	4,638mm183in	4,054mm160in
Width	1,825mm72in	1,740mm69in
Height	1,384mm54in	1,233mm49in
Wheelbase	2,810mm111in	2,310mm91in
Front track	1,545mm61in	1,496mm59in
Rear track	1,594mm63in	1,503mm59in
Ground clearance	130mm5in	-
Trunk volume	370L	-
Doors	2	2
Seats	4	2
Fuel tank	60L	45L
CO2 emissions	153g/km	153g/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 (F33) 420iAbarth 124 Spider 1.4 MultiAirPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW4 Series Convertible (F33)420i	5,000 rpm	1,350-4,600 rpm	5,250 rpm
Abarth124 Spider1.4 MultiAir	5,500 rpm	2,500 rpm	5,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW4 Series Convertible (F33)420i	Abarth124 Spider1.4 MultiAir
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.7 s	6.5 s
0-100 km/h 0-62 mph	8.2 s	6.9 s
0-200 km/h 0-124 mph	38.9 s	29.6 s
Top speed	230 km/h 143 mph	229 km/h 142 mph
	Drag race simulation
60 ft 18 m	2.5 s	2.5 s
330 ft 101 m	6.8 s	6.5 s
1/8 mile 201 m	10.4 s	9.8 s
1000 ft 305 m	13.4 s	12.6 s
1/4 mile 402 m	15.9 s	14.9 s
Trap speed 1/4 mile 402 m	144 km/h 89 mph	155 km/h 96 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (F33)420i	184 hp 137 kW
Abarth124 Spider1.4 MultiAir	170 hp 127 kW

BMW 4 Series Convertible (F33) 420i has 14 hp more than Abarth 124 Spider 1.4 MultiAir.

The biggest power difference is between Abarth 124 Spider 1.4 MultiAir and BMW 4 Series Convertible (F33) 420i: 14 hp (10 kW).

Torque comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (F33)420i	270 Nm 199 lb-ft
Abarth124 Spider1.4 MultiAir	250 Nm 184 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (F33)420i	1,700 kg 3,748 lb
Abarth124 Spider1.4 MultiAir	1,060 kg 2,337 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 (F33)420i	230 km/h 143 mph
Abarth124 Spider1.4 MultiAir	229 km/h 142 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 (F33)420i	8.2 s
Abarth124 Spider1.4 MultiAir	6.9 s

Although BMW 4 Series Convertible (F33) 420i has more power, Abarth 124 Spider 1.4 MultiAir is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Abarth 124 Spider 1.4 MultiAir and BMW 4 Series Convertible (F33) 420i: 1.3 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 (F33)420i	6.6 L/100 km 35.6 mpg US 42.8 mpg UK
Abarth124 Spider1.4 MultiAir	6.6 L/100 km 35.6 mpg US 42.8 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 (F33)420i	108 hp/t 81 kW/t 9.2 kg/hp
Abarth124 Spider1.4 MultiAir	160 hp/t 120 kW/t 6.2 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (F33)420i	909 km 565 mi
Abarth124 Spider1.4 MultiAir	682 km 424 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW4 Series Convertible (F33)420i	184 hp 137 kW	8.2 s	230 km/h 143 mph
Abarth124 Spider1.4 MultiAir	170 hp 127 kW	6.9 s	229 km/h 142 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 (F33)420i

Power	184 hp 137 kW
0-100 km/h	8.2 s
Top speed 230 km/h 143 mph

Doors/seats	2 doors 4 seats
Trunk	370 L 13.1 cu ft
Length	4,638 mm 182.6 in
Height	1,384 mm 54.5 in

Abarth124 Spider1.4 MultiAir

Power	170 hp 127 kW
0-100 km/h	6.9 s
Top speed 229 km/h 142 mph

Doors/seats	2 doors 2 seats
Trunk	-
Length	4,054 mm 159.6 in
Height	1,233 mm 48.5 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 (F33)420i

Power	184 hp 137 kW
0-100 km/h	8.2 s
Top speed 230 km/h 143 mph

6.6 L/100 km

35.6 mpg US

42.8 mpg UK

Abarth124 Spider1.4 MultiAir

Power	170 hp 127 kW
0-100 km/h	6.9 s
Top speed 229 km/h 142 mph

6.6 L/100 km

35.6 mpg US

42.8 mpg UK

Abarth 124 Spider 1.4 MultiAir 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 (F33)420i	6.6 L/100 km 35.6 mpg US 42.8 mpg UK	8.2 s
Abarth124 Spider1.4 MultiAir	6.6 L/100 km 35.6 mpg US 42.8 mpg UK	6.9 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 (F33)420i	108 hp/t 81 kW/t 9.2 kg/hp	6.6 L/100 km 35.6 mpg US 42.8 mpg UK
Abarth124 Spider1.4 MultiAir	160 hp/t 120 kW/t 6.2 kg/hp	6.6 L/100 km 35.6 mpg US 42.8 mpg UK

Detailed score breakdown

Vehicle

BMW4 Series Convertible (F33)420i

Abarth124 Spider1.4 MultiAir

Power

184 hp

137 kW

170 hp

127 kW

Torque

270 Nm

199 lb-ft

250 Nm

184 lb-ft

Acceleration

8.2 s

6.9 s

Top speed

230 km/h

143 mph

229 km/h

142 mph

Lightness

1,700 kg

3,748 lb

1,060 kg

2,337 lb

Fuel consumption

6.6 L/100 km

35.6 mpg US

42.8 mpg UK

6.6 L/100 km

35.6 mpg US

42.8 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	370 L 13.1 cu ft
Length	4,638 mm 182.6 in
Height	1,384 mm 54.5 in

Doors/seats	2 doors 2 seats
Trunk	-
Length	4,054 mm 159.6 in
Height	1,233 mm 48.5 in

Range score

909 km

565 mi

682 km

424 mi

CO2 score

153 g/km

Trunk score

370 L

13.1 cu ft

Power-to-weight score

108 hp/t

81 kW/t

9.2 kg/hp

160 hp/t

120 kW/t

6.2 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 (F33) 420i	Abarth 124 Spider 1.4 MultiAir
Consumption	6.6 L/100 km35.6 mpg US42.8 mpg UK	6.6 L/100 km35.6 mpg US42.8 mpg UK
Cost / 100 km	11.55 LC100 km	11.55 LC100 km
Cost / 100 mi	18.59 LC100 mi	18.59 LC100 mi
Annual fuel used	990 L262 US gal218 UK gal	990 L262 US gal218 UK gal
Annual fuel cost	1,733 LC/year	1,733 LC/year