Car comparison

BMW 2 Series Convertible (F23) 228ivsBMW 4 Series Convertible (F33) 428i

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

New comparison

BMW 2 Series Convertible (F23)

228i

245 hp1997 ccGasolineRWDManualTurbochargedCabriolet / convertible2015-2016
VS

BMW 4 Series Convertible (F33)

428i

245 hp1997 ccGasolineRWDManualTurbochargedCabriolet / convertible2014-2016

Comparison overview

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

Best choices

BMW 2 Series Convertible (F23) 228i

  • Quickest 0-100 km/h
    6.1 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    245 hp
    183 kW
  • Highest torque
    350 Nm
    258 lb-ft
  • Lightest
    1,535 kg
    3,384 lb
  • Best power-to-weight
    160 hp/t
    119 kW/t
    6.3 kg/hp
  • Lowest highway consumption
    5.6 L/100 km
    42.0 mpg US
    50.4 mpg UK
  • Largest trunk
    280 L
  • Best overall score
    55/100
  • Best performance score
    60/100
  • Best practicality score
    44/100

BMW 4 Series Convertible (F33) 428i

  • Lowest combined fuel consumption
    6.8 L/100 km
    34.6 mpg US
    41.5 mpg UK
  • Lowest city consumption
    8.8 L/100 km
    26.7 mpg US
    32.1 mpg UK
  • Lowest CO2 emissions
    159 g/km
  • Best estimated range
    882 km
    548 mi
  • Best economy score
    89/100

Specification comparison

Specification comparison
ModelBMW2 Series Convertible (F23)228iBMW4 Series Convertible (F33)428i
Power
245hp183kW
245hp183kW
Torque
350Nm258lb-ft
350Nm258lb-ft
Curb weight
1,535kg3,384lb
1,680kg3,704lb
Gross weight
1,975kg4,354lb
2,140kg4,718lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
90.4s99% target: 257 km/h / 160 mph
Calculated
93.9s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
6.1s
6.4s
0-200 km/h
22.9s
Calculated
24.0s
Calculated
0-60 mph
5.8s
Calculated
6.1s
Calculated
Fuel consumption
7L/100 km33.6mpg US40.4mpg UK
6.8L/100 km34.6mpg US41.5mpg UK
Fuel consumption city
9.3L/100 km25.3mpg US30.4mpg UK
8.8L/100 km26.7mpg US32.1mpg UK
Fuel consumption highway
5.6L/100 km42mpg US50.4mpg UK
5.7L/100 km41.3mpg US49.6mpg UK
Quarter mile
14.2s
Calculated
14.5s
Calculated
Power-to-weight
160hp/t119kW/t72hp/1000 lb
Calculated
146hp/t109kW/t66hp/1000 lb
Calculated
Torque-to-weight
228Nm/t153lb-ft/ton
Calculated
208Nm/t139lb-ft/ton
Calculated
Estimated range
743km462mi
Calculated
882km548mi
Calculated
Displacement
1,997cc122cu in
1,997cc122cu in
Length
4,432mm174in
4,638mm183in
Width
1,774mm70in
1,825mm72in
Height
1,413mm56in
1,384mm54in
Wheelbase
2,690mm106in
2,810mm111in
Front track
1,521mm60in
1,545mm61in
Rear track
1,556mm61in
1,594mm63in
Ground clearance
140mm6in
130mm5in
Trunk volume
280L
220L
Max trunk volume-
370L
Doors
2
2
Seats
4
4
Fuel tank
52L
60L
CO2 emissions
163g/km
159g/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 2 Series Convertible (F23) 228iBMW 4 Series Convertible (F33) 428iPowerTorque
  • BMW 2 Series Convertible (F23) 228i: Power / Torque
  • BMW 4 Series Convertible (F33) 428i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW2 Series Convertible (F23)228i5,000-6,500 rpm1,250-4,800 rpm6,750 rpm
BMW4 Series Convertible (F33)428i5,000-6,500 rpm1,250-4,800 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW2 Series Convertible (F23)228iBMW4 Series Convertible (F33)428i
Acceleration checkpoints
0-60 mph
0-97 km/h
5.8 s
6.1 s
0-100 km/h
0-62 mph
6.1 s
6.4 s
0-200 km/h
0-124 mph
22.9 s
24.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
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
12.2 s
1/4 mile
402 m
14.2 s
14.5 s
Trap speed
1/4 mile
402 m
163 km/h
101 mph
161 km/h
100 mph

Power comparison

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

Chart data table
VehicleValue
BMW2 Series Convertible (F23)228i
245 hp
183 kW
BMW4 Series Convertible (F33)428i
245 hp
183 kW

Torque comparison

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

Chart data table
VehicleValue
BMW2 Series Convertible (F23)228i
350 Nm
258 lb-ft
BMW4 Series Convertible (F33)428i
350 Nm
258 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW2 Series Convertible (F23)228i
1,535 kg
3,384 lb
BMW4 Series Convertible (F33)428i
1,680 kg
3,704 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
BMW2 Series Convertible (F23)228i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW4 Series Convertible (F33)428i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
BMW2 Series Convertible (F23)228i6.1 s
BMW4 Series Convertible (F33)428i6.4 s

The biggest 0-100 km/h difference is between BMW 2 Series Convertible (F23) 228i and BMW 4 Series Convertible (F33) 428i: 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
VehicleValue
BMW2 Series Convertible (F23)228i
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
BMW4 Series Convertible (F33)428i
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
BMW2 Series Convertible (F23)228i
160 hp/t
119 kW/t
6.3 kg/hp
BMW4 Series Convertible (F33)428i
146 hp/t
109 kW/t
6.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW2 Series Convertible (F23)228i
743 km
462 mi
BMW4 Series Convertible (F33)428i
882 km
548 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW2 Series Convertible (F23)228i
245 hp
183 kW
6.1 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW4 Series Convertible (F33)428i
245 hp
183 kW
6.4 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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
BMW2 Series Convertible (F23)228i
Power
245 hp
183 kW
0-100 km/h6.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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
BMW4 Series Convertible (F33)428i
Power
245 hp
183 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
220 L
7.8 cu ft
Length
4,638 mm
182.6 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
BMW2 Series Convertible (F23)228i
Power
245 hp
183 kW
0-100 km/h6.1 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
BMW4 Series Convertible (F33)428i
Power
245 hp
183 kW
0-100 km/h6.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

BMW 2 Series Convertible (F23) 228i 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
BMW2 Series Convertible (F23)228i
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
6.1 s
BMW4 Series Convertible (F33)428i
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
6.4 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
BMW2 Series Convertible (F23)228i
160 hp/t
119 kW/t
6.3 kg/hp
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
BMW4 Series Convertible (F33)428i
146 hp/t
109 kW/t
6.9 kg/hp
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW2 Series Convertible (F23)228iBMW4 Series Convertible (F33)428i
Power
245 hp
183 kW
245 hp
183 kW
Torque
350 Nm
258 lb-ft
350 Nm
258 lb-ft
Acceleration
6.1 s
6.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,535 kg
3,384 lb
1,680 kg
3,704 lb
Fuel consumption
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
Practicality
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
Doors/seats
2 doors
4 seats
Trunk
220 L
7.8 cu ft
Length
4,638 mm
182.6 in
Height
1,384 mm
54.5 in
Range score
743 km
462 mi
882 km
548 mi
CO2 score
163 g/km
159 g/km
Trunk score
280 L
9.9 cu ft
220 L
7.8 cu ft
Power-to-weight score
160 hp/t
119 kW/t
6.3 kg/hp
146 hp/t
109 kW/t
6.9 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 2 Series Convertible (F23) 228iBMW 4 Series Convertible (F33) 428i
Consumption7 L/100 km33.6 mpg US40.4 mpg UK6.8 L/100 km34.6 mpg US41.5 mpg UK
Cost / 100 km12.25 LC100 km11.90 LC100 km
Cost / 100 mi19.71 LC100 mi19.15 LC100 mi
Annual fuel used1,050 L277 US gal231 UK gal1,020 L269 US gal224 UK gal
Annual fuel cost1,838 LC/year1,785 LC/year

Head-to-head comparisons

BMW 2 Series Convertible (F23) 228i

  • Is 145 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Has 14 hp/t better power-to-weight
  • Has 60 L more trunk volume

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

BMW 4 Series Convertible (F33) 428i

  • Uses 0.2 L/100 km less fuel
  • Has 139 km (87 mi) more estimated range
  • Emits 4 g/km less CO2

Pros

  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Heaviest
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 2 Series Convertible (F23) 228i
BMW 4 Series Convertible (F33) 428i
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