Car comparison

BMW 2 Series Convertible (F23) M235ivsBMW X4 (F26) 35d

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

New comparison

BMW 2 Series Convertible (F23)

M235i

326 hp2979 ccGasolineRWDManualTurbochargedCabriolet / convertible2015-2016
VS

BMW X4 (F26)

35d

313 hp2993 ccDieselAWDAutomaticTurbocharged2014-2018

Comparison overview

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

Best choices

BMW X4 (F26) 35d

  • Highest torque
    630 Nm
    465 lb-ft
  • Lowest combined fuel consumption
    6.0 L/100 km
    39.2 mpg US
    47.1 mpg UK
  • Lowest city consumption
    6.7 L/100 km
    35.1 mpg US
    42.2 mpg UK
  • Lowest highway consumption
    5.5 L/100 km
    42.8 mpg US
    51.4 mpg UK
  • Lowest CO2 emissions
    157 g/km
  • Best estimated range
    1,117 km
    694 mi
  • Largest trunk
    500 L
  • Best overall score
    71/100
  • Best performance score
    69/100
  • Best economy score
    91/100
  • Best practicality score
    75/100

BMW 2 Series Convertible (F23) M235i

  • Quickest 0-100 km/h
    5.2 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    326 hp
    243 kW
  • Lightest
    1,600 kg
    3,527 lb
  • Best power-to-weight
    204 hp/t
    152 kW/t
    4.9 kg/hp

Specification comparison

Specification comparison
ModelBMW2 Series Convertible (F23)M235iBMWX4 (F26)35d
Power
326hp243kW
313hp233kW
Torque
450Nm332lb-ft
630Nm465lb-ft
Curb weight
1,600kg3,527lb
1,860kg4,101lb
Gross weight
2,030kg4,475lb
2,440kg5,379lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
247 km/h
153 mph
To 99% top speed
71.7s99% target: 257 km/h / 160 mph
Calculated
79.0s99% target: 245 km/h / 152 mph
Calculated
0-100 km/h
5.2s
5.2s
0-200 km/h
18.9s
Calculated
22.1s
Calculated
0-60 mph
4.9s
Calculated
4.9s
Calculated
Fuel consumption
8.5L/100 km27.7mpg US33.2mpg UK
6L/100 km39.2mpg US47.1mpg UK
Fuel consumption city
11.5L/100 km20.5mpg US24.6mpg UK
6.7L/100 km35.1mpg US42.2mpg UK
Fuel consumption highway
6.8L/100 km34.6mpg US41.5mpg UK
5.5L/100 km42.8mpg US51.4mpg UK
Quarter mile
13.3s
Calculated
13.5s
Calculated
Power-to-weight
204hp/t152kW/t92hp/1000 lb
Calculated
168hp/t125kW/t76hp/1000 lb
Calculated
Torque-to-weight
281Nm/t188lb-ft/ton
Calculated
339Nm/t227lb-ft/ton
Calculated
Estimated range
612km380mi
Calculated
1,117km694mi
Calculated
Displacement
2,979cc182cu in
2,993cc183cu in
Length
4,454mm175in
4,671mm184in
Width
1,774mm70in
1,881mm74in
Height
1,403mm55in
1,624mm64in
Wheelbase
2,690mm106in
2,810mm111in
Front track
1,516mm60in
1,616mm64in
Rear track
1,534mm60in
1,632mm64in
Ground clearance
130mm5in
204mm8in
Trunk volume
280L
500L
Max trunk volume
335L
1,400L
Doors
2
5
Seats
4
5
Fuel tank
52L
67L
CO2 emissions
199g/km
157g/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) M235iBMW X4 (F26) 35dPowerTorque
  • BMW 2 Series Convertible (F23) M235i: Power / Torque
  • BMW X4 (F26) 35d: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW2 Series Convertible (F23)M235i5,800-6,000 rpm1,300-4,500 rpm6,250 rpm
BMWX4 (F26)35d4,400 rpm1,500-2,500 rpm4,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW2 Series Convertible (F23)M235iBMWX4 (F26)35d
Acceleration checkpoints
0-60 mph
0-97 km/h
4.9 s
4.9 s
0-100 km/h
0-62 mph
5.2 s
5.2 s
0-200 km/h
0-124 mph
18.9 s
22.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
247 km/h
153 mph
Drag race simulation
60 ft
18 m
2.2 s
2.1 s
330 ft
101 m
5.8 s
5.7 s
1/8 mile
201 m
8.7 s
8.7 s
1000 ft
305 m
11.2 s
11.3 s
1/4 mile
402 m
13.3 s
13.5 s
Trap speed
1/4 mile
402 m
173 km/h
107 mph
166 km/h
103 mph

Power comparison

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

Chart data table
VehicleValue
BMW2 Series Convertible (F23)M235i
326 hp
243 kW
BMWX4 (F26)35d
313 hp
233 kW

BMW 2 Series Convertible (F23) M235i has 13 hp more than BMW X4 (F26) 35d.

The biggest power difference is between BMW X4 (F26) 35d and BMW 2 Series Convertible (F23) M235i: 13 hp (10 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW2 Series Convertible (F23)M235i
450 Nm
332 lb-ft
BMWX4 (F26)35d
630 Nm
465 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW2 Series Convertible (F23)M235i
1,600 kg
3,527 lb
BMWX4 (F26)35d
1,860 kg
4,101 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)M235i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWX4 (F26)35d
247 km/h
153 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)M235i5.2 s
BMWX4 (F26)35d5.2 s

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
BMW2 Series Convertible (F23)M235i
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
BMWX4 (F26)35d
6.0 L/100 km
39.2 mpg US
47.1 mpg UK

The biggest fuel consumption difference is between BMW X4 (F26) 35d and BMW 2 Series Convertible (F23) M235i: 2.5 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
BMW2 Series Convertible (F23)M235i
204 hp/t
152 kW/t
4.9 kg/hp
BMWX4 (F26)35d
168 hp/t
125 kW/t
5.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW2 Series Convertible (F23)M235i
612 km
380 mi
BMWX4 (F26)35d
1,117 km
694 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW2 Series Convertible (F23)M235i
326 hp
243 kW
5.2 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWX4 (F26)35d
313 hp
233 kW
5.2 s
247 km/h
153 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)M235i
Power
326 hp
243 kW
0-100 km/h5.2 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
4,454 mm
175.4 in
Height
1,403 mm
55.2 in
BMWX4 (F26)35d
Power
313 hp
233 kW
0-100 km/h5.2 s
Top speed
247 km/h
153 mph
Doors/seats
5 doors
5 seats
Trunk
500 L
17.7 cu ft
Length
4,671 mm
183.9 in
Height
1,624 mm
63.9 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)M235i
Power
326 hp
243 kW
0-100 km/h5.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
BMWX4 (F26)35d
Power
313 hp
233 kW
0-100 km/h5.2 s
Top speed
247 km/h
153 mph
6.0 L/100 km
39.2 mpg US
47.1 mpg UK

BMW X4 (F26) 35d 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)M235i
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
5.2 s
BMWX4 (F26)35d
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
5.2 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)M235i
204 hp/t
152 kW/t
4.9 kg/hp
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
BMWX4 (F26)35d
168 hp/t
125 kW/t
5.9 kg/hp
6.0 L/100 km
39.2 mpg US
47.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW2 Series Convertible (F23)M235iBMWX4 (F26)35d
Power
326 hp
243 kW
313 hp
233 kW
Torque
450 Nm
332 lb-ft
630 Nm
465 lb-ft
Acceleration
5.2 s
5.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
247 km/h
153 mph
Lightness
1,600 kg
3,527 lb
1,860 kg
4,101 lb
Fuel consumption
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
280 L
9.9 cu ft
Length
4,454 mm
175.4 in
Height
1,403 mm
55.2 in
Doors/seats
5 doors
5 seats
Trunk
500 L
17.7 cu ft
Length
4,671 mm
183.9 in
Height
1,624 mm
63.9 in
Range score
612 km
380 mi
1,117 km
694 mi
CO2 score
199 g/km
157 g/km
Trunk score
280 L
9.9 cu ft
500 L
17.7 cu ft
Power-to-weight score
204 hp/t
152 kW/t
4.9 kg/hp
168 hp/t
125 kW/t
5.9 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) M235iBMW X4 (F26) 35d
Consumption8.5 L/100 km27.7 mpg US33.2 mpg UK6 L/100 km39.2 mpg US47.1 mpg UK
Cost / 100 km14.88 LC100 km10.50 LC100 km
Cost / 100 mi23.94 LC100 mi16.90 LC100 mi
Annual fuel used1,275 L337 US gal280 UK gal900 L238 US gal198 UK gal
Annual fuel cost2,231 LC/year1,575 LC/year

Head-to-head comparisons

BMW 2 Series Convertible (F23) M235i

  • Has 13 hp more
  • Is 260 kg lighter
  • Has 13 km/h (8 mph) higher top speed
  • Has 35 hp/t better power-to-weight

Pros

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

Cons

  • Highest combined fuel consumption
  • Smallest trunk
  • Highest CO2 emissions

BMW X4 (F26) 35d

  • Has 180 Nm more
  • Uses 2.5 L/100 km less fuel
  • Has 505 km (314 mi) more estimated range
  • Has 220 L more trunk volume
  • Emits 42 g/km less CO2

Pros

  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Lowest power
  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 2 Series Convertible (F23) M235i
BMW X4 (F26) 35d
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BMW 2 Series Convertible (F23) M235i vs BMW X4 (F26) 35d - car comparison - FastVsFaster