Car comparison

BMW 4 Series Convertible (F33) 430ivsAlfa Romeo 4C Spider 1.7

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

New comparison

BMW 4 Series Convertible (F33)

430i

252 hp1998 ccGasolineRWDManualTurbochargedCabriolet / convertible2016-2016
VS

Alfa Romeo 4C Spider

1.7

240 hp1742 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2015-2019

Comparison overview

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

Best choices

BMW 4 Series Convertible (F33) 430i

  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    252 hp
    188 kW
  • Highest torque
    350 Nm
    258 lb-ft
  • Lowest city consumption
    9.0 L/100 km
    26.1 mpg US
    31.4 mpg UK
  • Best estimated range
    857 km
    533 mi
  • Largest trunk
    370 L
  • Best overall score
    55/100
  • Best economy score
    88/100
  • Best practicality score
    47/100

Alfa Romeo 4C Spider 1.7

  • Quickest 0-100 km/h
    4.5 s
  • Lightest
    940 kg
    2,072 lb
  • Best power-to-weight
    255 hp/t
    190 kW/t
    3.9 kg/hp
  • Lowest combined fuel consumption
    6.9 L/100 km
    34.1 mpg US
    40.9 mpg UK
  • Lowest highway consumption
    5.1 L/100 km
    46.1 mpg US
    55.4 mpg UK
  • Lowest CO2 emissions
    161 g/km
  • Best performance score
    67/100

Specification comparison

Specification comparison
ModelBMW4 Series Convertible (F33)430iAlfa Romeo4C Spider1.7
Power
252hp188kW
240hp179kW
Torque
350Nm258lb-ft
350Nm258lb-ft
Curb weight
1,710kg3,770lb
940kg2,072lb
Gross weight
2,170kg4,784lb
-
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
257 km/h
160 mph
To 99% top speed
93.9s99% target: 257 km/h / 160 mph
Calculated
52.2s99% target: 254 km/h / 158 mph
Calculated
0-100 km/h
6.4s
4.5s
0-200 km/h
24.0s
Calculated
15.3s
Calculated
0-60 mph
6.1s
Calculated
4.3s
Calculated
Fuel consumption
7L/100 km33.6mpg US40.4mpg UK
6.9L/100 km34.1mpg US40.9mpg UK
Fuel consumption city
9L/100 km26.1mpg US31.4mpg UK
10.1L/100 km23.3mpg US28.0mpg UK
Fuel consumption highway
5.8L/100 km40.6mpg US48.7mpg UK
5.1L/100 km46.1mpg US55.4mpg UK
Quarter mile
14.5s
Calculated
12.6s
Calculated
Power-to-weight
147hp/t110kW/t67hp/1000 lb
Calculated
255hp/t190kW/t116hp/1000 lb
Calculated
Torque-to-weight
205Nm/t137lb-ft/ton
Calculated
372Nm/t249lb-ft/ton
Calculated
Estimated range
857km533mi
Calculated
580km360mi
Calculated
Displacement
1,998cc122cu in
1,742cc106cu in
Length
4,638mm183in
3,989mm157in
Width
1,825mm72in
1,864mm73in
Height
1,384mm54in
1,183mm47in
Wheelbase
2,810mm111in
2,380mm94in
Front track
1,545mm61in
1,639mm65in
Rear track
1,594mm63in
1,604mm63in
Ground clearance
130mm5in
113mm4in
Trunk volume
370L
110L
Doors
2
2
Seats
4
2
Fuel tank
60L
40L
CO2 emissions
162g/km
161g/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) 430iAlfa Romeo 4C Spider 1.7PowerTorque
  • BMW 4 Series Convertible (F33) 430i: Power / Torque
  • Alfa Romeo 4C Spider 1.7: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Convertible (F33)430i5,200 rpm1,450-4,800 rpm5,450 rpm
Alfa Romeo4C Spider1.76,000 rpm2,200-4,250 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Convertible (F33)430iAlfa Romeo4C Spider1.7
Acceleration checkpoints
0-60 mph
0-97 km/h
6.1 s
4.3 s
0-100 km/h
0-62 mph
6.4 s
4.5 s
0-200 km/h
0-124 mph
24.0 s
15.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
257 km/h
160 mph
Drag race simulation
60 ft
18 m
2.4 s
2.1 s
330 ft
101 m
6.3 s
5.5 s
1/8 mile
201 m
9.5 s
8.2 s
1000 ft
305 m
12.2 s
10.6 s
1/4 mile
402 m
14.5 s
12.6 s
Trap speed
1/4 mile
402 m
161 km/h
100 mph
184 km/h
114 mph

Power comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)430i
252 hp
188 kW
Alfa Romeo4C Spider1.7
240 hp
179 kW

BMW 4 Series Convertible (F33) 430i has 12 hp more than Alfa Romeo 4C Spider 1.7.

The biggest power difference is between Alfa Romeo 4C Spider 1.7 and BMW 4 Series Convertible (F33) 430i: 12 hp (9 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)430i
350 Nm
258 lb-ft
Alfa Romeo4C Spider1.7
350 Nm
258 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)430i
1,710 kg
3,770 lb
Alfa Romeo4C Spider1.7
940 kg
2,072 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 (F33)430i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Alfa Romeo4C Spider1.7
257 km/h
160 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 (F33)430i6.4 s
Alfa Romeo4C Spider1.74.5 s

Although BMW 4 Series Convertible (F33) 430i has more power, Alfa Romeo 4C Spider 1.7 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Alfa Romeo 4C Spider 1.7 and BMW 4 Series Convertible (F33) 430i: 1.9 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 (F33)430i
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
Alfa Romeo4C Spider1.7
6.9 L/100 km
34.1 mpg US
40.9 mpg UK

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 (F33)430i
147 hp/t
110 kW/t
6.8 kg/hp
Alfa Romeo4C Spider1.7
255 hp/t
190 kW/t
3.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)430i
857 km
533 mi
Alfa Romeo4C Spider1.7
580 km
360 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Convertible (F33)430i
252 hp
188 kW
6.4 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Alfa Romeo4C Spider1.7
240 hp
179 kW
4.5 s
257 km/h
160 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 (F33)430i
Power
252 hp
188 kW
0-100 km/h6.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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
Alfa Romeo4C Spider1.7
Power
240 hp
179 kW
0-100 km/h4.5 s
Top speed
257 km/h
160 mph
Doors/seats
2 doors
2 seats
Trunk
110 L
3.9 cu ft
Length
3,989 mm
157.0 in
Height
1,183 mm
46.6 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 (F33)430i
Power
252 hp
188 kW
0-100 km/h6.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
Alfa Romeo4C Spider1.7
Power
240 hp
179 kW
0-100 km/h4.5 s
Top speed
257 km/h
160 mph
6.9 L/100 km
34.1 mpg US
40.9 mpg UK

Alfa Romeo 4C Spider 1.7 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 (F33)430i
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
6.4 s
Alfa Romeo4C Spider1.7
6.9 L/100 km
34.1 mpg US
40.9 mpg UK
4.5 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 (F33)430i
147 hp/t
110 kW/t
6.8 kg/hp
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
Alfa Romeo4C Spider1.7
255 hp/t
190 kW/t
3.9 kg/hp
6.9 L/100 km
34.1 mpg US
40.9 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Convertible (F33)430iAlfa Romeo4C Spider1.7
Power
252 hp
188 kW
240 hp
179 kW
Torque
350 Nm
258 lb-ft
350 Nm
258 lb-ft
Acceleration
6.4 s
4.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
257 km/h
160 mph
Lightness
1,710 kg
3,770 lb
940 kg
2,072 lb
Fuel consumption
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
6.9 L/100 km
34.1 mpg US
40.9 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
110 L
3.9 cu ft
Length
3,989 mm
157.0 in
Height
1,183 mm
46.6 in
Range score
857 km
533 mi
580 km
360 mi
CO2 score
162 g/km
161 g/km
Trunk score
370 L
13.1 cu ft
110 L
3.9 cu ft
Power-to-weight score
147 hp/t
110 kW/t
6.8 kg/hp
255 hp/t
190 kW/t
3.9 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 (F33) 430iAlfa Romeo 4C Spider 1.7
Consumption7 L/100 km33.6 mpg US40.4 mpg UK6.9 L/100 km34.1 mpg US40.9 mpg UK
Cost / 100 km12.25 LC100 km12.08 LC100 km
Cost / 100 mi19.71 LC100 mi19.43 LC100 mi
Annual fuel used1,050 L277 US gal231 UK gal1,035 L273 US gal228 UK gal
Annual fuel cost1,838 LC/year1,811 LC/year

Head-to-head comparisons

BMW 4 Series Convertible (F33) 430i

  • Has 12 hp more
  • Has 3 km/h (2 mph) higher top speed
  • Has 277 km (172 mi) more estimated range
  • Has 260 L more trunk volume

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

Alfa Romeo 4C Spider 1.7

  • Is 770 kg lighter
  • Is 1.9 s quicker from 0-100 km/h
  • Uses 0.1 L/100 km less fuel
  • Has 108 hp/t better power-to-weight
  • Emits 1 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio

Cons

  • Lowest power
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 4 Series Convertible (F33) 430i
Alfa Romeo 4C Spider 1.7
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