Car comparison

BMW 4 Series Convertible (G23) 420ivsBMW 2 Series Convertible (F23) 220i

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

New comparison

BMW 4 Series Convertible (G23)

420i

184 hp1998 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2020-2024
VS

BMW 2 Series Convertible (F23)

220i

184 hp1998 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2016-2017

Comparison overview

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

Best choices

BMW 4 Series Convertible (G23) 420i

  • Fastest top speed
    236 km/h
    147 mph
  • Most powerful
    184 hp
    137 kW
  • Highest torque
    300 Nm
    221 lb-ft
  • Lowest combined fuel consumption
    6.1 L/100 km
    38.6 mpg US
    46.3 mpg UK
  • Lowest city consumption
    7.4 L/100 km
    31.8 mpg US
    38.2 mpg UK
  • Best estimated range
    967 km
    601 mi
  • Largest trunk
    300 L
  • Best overall score
    47/100
  • Best performance score
    48/100
  • Best economy score
    90/100
  • Best practicality score
    45/100

BMW 2 Series Convertible (F23) 220i

  • Quickest 0-100 km/h
    7.7 s
  • Lightest
    1,540 kg
    3,395 lb
  • Best power-to-weight
    119 hp/t
    89 kW/t
    8.4 kg/hp
  • Lowest highway consumption
    5.2 L/100 km
    45.2 mpg US
    54.3 mpg UK

Specification comparison

Specification comparison
ModelBMW4 Series Convertible (G23)420iBMW2 Series Convertible (F23)220i
Power
184hp137kW
184hp137kW
Torque
300Nm221lb-ft
290Nm214lb-ft
Curb weight
1,690kg3,726lb
1,540kg3,395lb
Gross weight
2,185kg4,817lb
2,010kg4,431lb
Top speed
236 km/h
147 mph
226 km/h
140 mph
To 99% top speed
107.5s99% target: 234 km/h / 145 mph
Calculated
95.6s99% target: 224 km/h / 139 mph
Calculated
0-100 km/h
8.2s
7.7s
0-200 km/h
36.3s
Calculated
38.0s
Calculated
0-60 mph
7.8s
Calculated
7.3s
Calculated
Fuel consumption
6.1L/100 km38.6mpg US46.3mpg UK
6.1L/100 km38.6mpg US46.3mpg UK
Fuel consumption city
7.4L/100 km31.8mpg US38.2mpg UK
7.7L/100 km30.5mpg US36.7mpg UK
Fuel consumption highway
5.4L/100 km43.6mpg US52.3mpg UK
5.2L/100 km45.2mpg US54.3mpg UK
Quarter mile
15.9s
Calculated
15.6s
Calculated
Power-to-weight
109hp/t81kW/t49hp/1000 lb
Calculated
119hp/t89kW/t54hp/1000 lb
Calculated
Torque-to-weight
178Nm/t119lb-ft/ton
Calculated
188Nm/t126lb-ft/ton
Calculated
Estimated range
967km601mi
Calculated
852km530mi
Calculated
Displacement
1,998cc122cu in
1,998cc122cu in
Length
4,768mm188in
4,432mm174in
Width
1,852mm73in
1,774mm70in
Height
1,384mm54in
1,413mm56in
Wheelbase
2,851mm112in
2,690mm106in
Front track
1,575mm62in
1,521mm60in
Rear track
1,611mm63in
1,556mm61in
Ground clearance
124mm5in
140mm6in
Trunk volume
300L
280L
Max trunk volume
385L
335L
Doors
2
2
Seats
4
4
Fuel tank
59L
52L
CO2 emissions-
140g/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 (G23) 420iBMW 2 Series Convertible (F23) 220iPowerTorque
  • BMW 4 Series Convertible (G23) 420i: Power / Torque
  • BMW 2 Series Convertible (F23) 220i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Convertible (G23)420i5,000-6,500 rpm1,350-4,000 rpm6,750 rpm
BMW2 Series Convertible (F23)220i5,000 rpm1,350-4,250 rpm5,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Convertible (G23)420iBMW2 Series Convertible (F23)220i
Acceleration checkpoints
0-60 mph
0-97 km/h
7.8 s
7.3 s
0-100 km/h
0-62 mph
8.2 s
7.7 s
0-200 km/h
0-124 mph
36.3 s
38.0 s
Top speed
236 km/h
147 mph
226 km/h
140 mph
Drag race simulation
60 ft
18 m
2.6 s
2.5 s
330 ft
101 m
6.9 s
6.7 s
1/8 mile
201 m
10.4 s
10.1 s
1000 ft
305 m
13.4 s
13.1 s
1/4 mile
402 m
15.9 s
15.6 s
Trap speed
1/4 mile
402 m
145 km/h
90 mph
146 km/h
91 mph

Power comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420i
184 hp
137 kW
BMW2 Series Convertible (F23)220i
184 hp
137 kW

Torque comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420i
300 Nm
221 lb-ft
BMW2 Series Convertible (F23)220i
290 Nm
214 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420i
1,690 kg
3,726 lb
BMW2 Series Convertible (F23)220i
1,540 kg
3,395 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 (G23)420i
236 km/h
147 mph
BMW2 Series Convertible (F23)220i
226 km/h
140 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 (G23)420i8.2 s
BMW2 Series Convertible (F23)220i7.7 s

The biggest 0-100 km/h difference is between BMW 2 Series Convertible (F23) 220i and BMW 4 Series Convertible (G23) 420i: 0.5 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 (G23)420i
6.1 L/100 km
38.6 mpg US
46.3 mpg UK
BMW2 Series Convertible (F23)220i
6.1 L/100 km
38.6 mpg US
46.3 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 (G23)420i
109 hp/t
81 kW/t
9.2 kg/hp
BMW2 Series Convertible (F23)220i
119 hp/t
89 kW/t
8.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (G23)420i
967 km
601 mi
BMW2 Series Convertible (F23)220i
852 km
530 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Convertible (G23)420i
184 hp
137 kW
8.2 s
236 km/h
147 mph
BMW2 Series Convertible (F23)220i
184 hp
137 kW
7.7 s
226 km/h
140 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 (G23)420i
Power
184 hp
137 kW
0-100 km/h8.2 s
Top speed
236 km/h
147 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
BMW2 Series Convertible (F23)220i
Power
184 hp
137 kW
0-100 km/h7.7 s
Top speed
226 km/h
140 mph
Doors/seats
2 doors
4 seats
Trunk
280 L
9.9 cu ft
Length
4,432 mm
174.5 in
Height
1,413 mm
55.6 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 (G23)420i
Power
184 hp
137 kW
0-100 km/h8.2 s
Top speed
236 km/h
147 mph
6.1 L/100 km
38.6 mpg US
46.3 mpg UK
BMW2 Series Convertible (F23)220i
Power
184 hp
137 kW
0-100 km/h7.7 s
Top speed
226 km/h
140 mph
6.1 L/100 km
38.6 mpg US
46.3 mpg UK

BMW 4 Series Convertible (G23) 420i 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 (G23)420i
6.1 L/100 km
38.6 mpg US
46.3 mpg UK
8.2 s
BMW2 Series Convertible (F23)220i
6.1 L/100 km
38.6 mpg US
46.3 mpg UK
7.7 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 (G23)420i
109 hp/t
81 kW/t
9.2 kg/hp
6.1 L/100 km
38.6 mpg US
46.3 mpg UK
BMW2 Series Convertible (F23)220i
119 hp/t
89 kW/t
8.4 kg/hp
6.1 L/100 km
38.6 mpg US
46.3 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Convertible (G23)420iBMW2 Series Convertible (F23)220i
Power
184 hp
137 kW
184 hp
137 kW
Torque
300 Nm
221 lb-ft
290 Nm
214 lb-ft
Acceleration
8.2 s
7.7 s
Top speed
236 km/h
147 mph
226 km/h
140 mph
Lightness
1,690 kg
3,726 lb
1,540 kg
3,395 lb
Fuel consumption
6.1 L/100 km
38.6 mpg US
46.3 mpg UK
6.1 L/100 km
38.6 mpg US
46.3 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
280 L
9.9 cu ft
Length
4,432 mm
174.5 in
Height
1,413 mm
55.6 in
Range score
967 km
601 mi
852 km
530 mi
CO2 score
-
140 g/km
Trunk score
300 L
10.6 cu ft
280 L
9.9 cu ft
Power-to-weight score
109 hp/t
81 kW/t
9.2 kg/hp
119 hp/t
89 kW/t
8.4 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 (G23) 420iBMW 2 Series Convertible (F23) 220i
Consumption6.1 L/100 km38.6 mpg US46.3 mpg UK6.1 L/100 km38.6 mpg US46.3 mpg UK
Cost / 100 km10.67 LC100 km10.67 LC100 km
Cost / 100 mi17.18 LC100 mi17.18 LC100 mi
Annual fuel used915 L242 US gal201 UK gal915 L242 US gal201 UK gal
Annual fuel cost1,601 LC/year1,601 LC/year

Head-to-head comparisons

BMW 4 Series Convertible (G23) 420i

  • Has 10 Nm more
  • Has 10 km/h (6 mph) higher top speed
  • Has 115 km (71 mi) more estimated range
  • Has 20 L more trunk volume

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Heaviest

BMW 2 Series Convertible (F23) 220i

  • Is 150 kg lighter
  • Is 0.5 s quicker from 0-100 km/h
  • Has 11 hp/t better power-to-weight

Pros

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

Cons

  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 4 Series Convertible (G23) 420i
BMW 2 Series Convertible (F23) 220i
Compare selected cars
2 vehicles selected

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