Car comparison

BMW 4 Series Convertible (F33) 420ivsBMW 4 Series Convertible (F33) · Facelift 2017 420i

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

New comparison

BMW 4 Series Convertible (F33)

420i

184 hp1997 ccGasolineRWDManualTurbochargedCabriolet / convertible2014-2016
VS

BMW 4 Series Convertible (F33) · Facelift 2017

420i

184 hp1998 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2017-2020

Comparison overview

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

Best choices

BMW 4 Series Convertible (F33) 420i Manual

  • Quickest 0-100 km/h
    8.2 s
  • Fastest top speed
    230 km/h
    143 mph
  • Most powerful
    184 hp
    137 kW
  • Highest torque
    270 Nm
    199 lb-ft
  • Lightest
    1,650 kg
    3,638 lb
  • Best power-to-weight
    112 hp/t
    83 kW/t
    9.0 kg/hp
  • Largest trunk
    370 L
  • Best overall score
    47/100
  • Best performance score
    47/100
  • Best practicality score
    47/100

BMW 4 Series Convertible (F33) Facelift 2017 420i Automatic

  • Lowest combined fuel consumption
    6.2 L/100 km
    37.9 mpg US
    45.6 mpg UK
  • Lowest city consumption
    8.1 L/100 km
    29.0 mpg US
    34.9 mpg UK
  • Lowest highway consumption
    5.1 L/100 km
    46.1 mpg US
    55.4 mpg UK
  • Lowest CO2 emissions
    144 g/km
  • Best estimated range
    968 km
    601 mi
  • Best economy score
    90/100

Specification comparison

Specification comparison
ModelBMW4 Series Convertible (F33)420iManualBMW4 Series Convertible (F33)Facelift 2017420iAutomatic
Power
184hp137kW
184hp137kW
Torque
270Nm199lb-ft
270Nm199lb-ft
Curb weight
1,650kg3,638lb
1,715kg3,781lb
Gross weight
2,120kg4,674lb
2,185kg4,817lb
Top speed
230 km/h
143 mph
230 km/h
143 mph
To 99% top speed
104.6s99% target: 228 km/h / 141 mph
Calculated
108.6s99% target: 228 km/h / 141 mph
Calculated
0-100 km/h
8.2s
8.4s
0-200 km/h
38.7s
Calculated
40.0s
Calculated
0-60 mph
7.7s
Calculated
7.9s
Calculated
Fuel consumption
6.8L/100 km34.6mpg US41.5mpg UK
6.2L/100 km37.9mpg US45.6mpg UK
Fuel consumption city
9.3L/100 km25.3mpg US30.4mpg UK
8.1L/100 km29mpg US34.9mpg UK
Fuel consumption highway
5.4L/100 km43.6mpg US52.3mpg UK
5.1L/100 km46.1mpg US55.4mpg UK
Quarter mile
15.9s
Calculated
16.1s
Calculated
Power-to-weight
112hp/t83kW/t51hp/1000 lb
Calculated
107hp/t80kW/t49hp/1000 lb
Calculated
Torque-to-weight
164Nm/t109lb-ft/ton
Calculated
157Nm/t105lb-ft/ton
Calculated
Estimated range
882km548mi
Calculated
968km601mi
Calculated
Displacement
1,997cc122cu in
1,998cc122cu in
Length
4,638mm183in
4,640mm183in
Width
1,825mm72in
1,825mm72in
Height
1,384mm54in
1,384mm54in
Wheelbase
2,810mm111in
2,810mm111in
Front track
1,545mm61in
1,544mm61in
Rear track
1,594mm63in
1,593mm63in
Ground clearance
130mm5in
130mm5in
Trunk volume
370L
370L
Doors
2
2
Seats
4
4
Fuel tank
60L
60L
CO2 emissions
159g/km
144g/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) 420i ManualBMW 4 Series Convertible (F33) Facelift 2017 420i AutomaticPowerTorque
  • BMW 4 Series Convertible (F33) 420i Manual: Power / Torque
  • BMW 4 Series Convertible (F33) Facelift 2017 420i Automatic: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Convertible (F33)420iManual5,000-6,250 rpm1,250-4,500 rpm6,500 rpm
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic5,000 rpm1,350-4,600 rpm5,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Convertible (F33)420iManualBMW4 Series Convertible (F33)Facelift 2017420iAutomatic
Acceleration checkpoints
0-60 mph
0-97 km/h
7.7 s
7.9 s
0-100 km/h
0-62 mph
8.2 s
8.4 s
0-200 km/h
0-124 mph
38.7 s
40.0 s
Top speed
230 km/h
143 mph
230 km/h
143 mph
Drag race simulation
60 ft
18 m
2.6 s
2.6 s
330 ft
101 m
6.9 s
6.9 s
1/8 mile
201 m
10.4 s
10.5 s
1000 ft
305 m
13.4 s
13.5 s
1/4 mile
402 m
15.9 s
16.1 s
Trap speed
1/4 mile
402 m
144 km/h
89 mph
143 km/h
89 mph

Power comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)420iManual
184 hp
137 kW
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
184 hp
137 kW

Torque comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)420iManual
270 Nm
199 lb-ft
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
270 Nm
199 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)420iManual
1,650 kg
3,638 lb
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
1,715 kg
3,781 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)420iManual
230 km/h
143 mph
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
230 km/h
143 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)420iManual8.2 s
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic8.4 s

The biggest 0-100 km/h difference is between BMW 4 Series Convertible (F33) 420i Manual and BMW 4 Series Convertible (F33) Facelift 2017 420i Automatic: 0.2 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)420iManual
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
6.2 L/100 km
37.9 mpg US
45.6 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Convertible (F33) Facelift 2017 420i Automatic and BMW 4 Series Convertible (F33) 420i Manual: 0.6 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 (F33)420iManual
112 hp/t
83 kW/t
9.0 kg/hp
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
107 hp/t
80 kW/t
9.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)420iManual
882 km
548 mi
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
968 km
601 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Convertible (F33)420iManual
184 hp
137 kW
8.2 s
230 km/h
143 mph
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
184 hp
137 kW
8.4 s
230 km/h
143 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)420iManual
Power
184 hp
137 kW
0-100 km/h8.2 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
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
Power
184 hp
137 kW
0-100 km/h8.4 s
Top speed
230 km/h
143 mph
Doors/seats
2 doors
4 seats
Trunk
370 L
13.1 cu ft
Length
4,640 mm
182.7 in
Height
1,384 mm
54.5 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)420iManual
Power
184 hp
137 kW
0-100 km/h8.2 s
Top speed
230 km/h
143 mph
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
Power
184 hp
137 kW
0-100 km/h8.4 s
Top speed
230 km/h
143 mph
6.2 L/100 km
37.9 mpg US
45.6 mpg UK

BMW 4 Series Convertible (F33) 420i Manual 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)420iManual
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
8.2 s
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
8.4 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)420iManual
112 hp/t
83 kW/t
9.0 kg/hp
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
BMW4 Series Convertible (F33)Facelift 2017420iAutomatic
107 hp/t
80 kW/t
9.3 kg/hp
6.2 L/100 km
37.9 mpg US
45.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Convertible (F33)420iManualBMW4 Series Convertible (F33)Facelift 2017420iAutomatic
Power
184 hp
137 kW
184 hp
137 kW
Torque
270 Nm
199 lb-ft
270 Nm
199 lb-ft
Acceleration
8.2 s
8.4 s
Top speed
230 km/h
143 mph
230 km/h
143 mph
Lightness
1,650 kg
3,638 lb
1,715 kg
3,781 lb
Fuel consumption
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
6.2 L/100 km
37.9 mpg US
45.6 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
4 seats
Trunk
370 L
13.1 cu ft
Length
4,640 mm
182.7 in
Height
1,384 mm
54.5 in
Range score
882 km
548 mi
968 km
601 mi
CO2 score
159 g/km
144 g/km
Trunk score
370 L
13.1 cu ft
370 L
13.1 cu ft
Power-to-weight score
112 hp/t
83 kW/t
9.0 kg/hp
107 hp/t
80 kW/t
9.3 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) 420i ManualBMW 4 Series Convertible (F33) Facelift 2017 420i Automatic
Consumption6.8 L/100 km34.6 mpg US41.5 mpg UK6.2 L/100 km37.9 mpg US45.6 mpg UK
Cost / 100 km11.90 LC100 km10.85 LC100 km
Cost / 100 mi19.15 LC100 mi17.46 LC100 mi
Annual fuel used1,020 L269 US gal224 UK gal930 L246 US gal205 UK gal
Annual fuel cost1,785 LC/year1,628 LC/year

Head-to-head comparisons

BMW 4 Series Convertible (F33) 420i Manual

  • Is 65 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Has 4 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 4 Series Convertible (F33) 420i
BMW 4 Series Convertible (F33) 420i
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