Car comparison

BMW 4 Series Gran Coupe (F36) 420ivsBMW X4 (F26) 20i

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

New comparison

BMW 4 Series Gran Coupe (F36)

420i

184 hp1998 ccGasolineAWDManualTurbochargedCoupe2016-2016
VS

BMW X4 (F26)

20i

184 hp1997 ccGasolineAWDAutomaticTurbocharged2014-2018

Comparison overview

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

Best choices

BMW 4 Series Gran Coupe (F36) 420i

  • Quickest 0-100 km/h
    7.8 s
  • Fastest top speed
    233 km/h
    145 mph
  • Most powerful
    184 hp
    137 kW
  • Highest torque
    270 Nm
    199 lb-ft
  • Lightest
    1,600 kg
    3,527 lb
  • Best power-to-weight
    115 hp/t
    86 kW/t
    8.7 kg/hp
  • Lowest combined fuel consumption
    6.9 L/100 km
    34.1 mpg US
    40.9 mpg UK
  • Lowest city consumption
    9.0 L/100 km
    26.1 mpg US
    31.4 mpg UK
  • Lowest highway consumption
    5.7 L/100 km
    41.3 mpg US
    49.6 mpg UK
  • Lowest CO2 emissions
    161 g/km
  • Best performance score
    48/100
  • Best economy score
    88/100

BMW X4 (F26) 20i

  • Best estimated range
    931 km
    578 mi
  • Largest trunk
    500 L
  • Best overall score
    55/100
  • Best practicality score
    75/100

Specification comparison

Specification comparison
ModelBMW4 Series Gran Coupe (F36)420iBMWX4 (F26)20i
Power
184hp137kW
184hp137kW
Torque
270Nm199lb-ft
270Nm199lb-ft
Curb weight
1,600kg3,527lb
1,735kg3,825lb
Gross weight
2,160kg4,762lb
2,325kg5,126lb
Top speed
233 km/h
145 mph
212 km/h
132 mph
To 99% top speed
100.4s99% target: 231 km/h / 143 mph
Calculated
101.6s99% target: 210 km/h / 130 mph
Calculated
0-100 km/h
7.8s
8.1s
0-200 km/h
35.5s
Calculated
55.5s
Calculated
0-60 mph
7.4s
Calculated
7.6s
Calculated
Fuel consumption
6.9L/100 km34.1mpg US40.9mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Fuel consumption city
9L/100 km26.1mpg US31.4mpg UK
9L/100 km26.1mpg US31.4mpg UK
Fuel consumption highway
5.7L/100 km41.3mpg US49.6mpg UK
6.1L/100 km38.6mpg US46.3mpg UK
Quarter mile
15.6s
Calculated
15.9s
Calculated
Power-to-weight
115hp/t86kW/t52hp/1000 lb
Calculated
106hp/t79kW/t48hp/1000 lb
Calculated
Torque-to-weight
169Nm/t113lb-ft/ton
Calculated
156Nm/t104lb-ft/ton
Calculated
Estimated range
870km540mi
Calculated
931km578mi
Calculated
Displacement
1,998cc122cu in
1,997cc122cu in
Length
4,638mm183in
4,671mm184in
Width
1,825mm72in
1,881mm74in
Height
1,404mm55in
1,624mm64in
Wheelbase
2,810mm111in
2,810mm111in
Front track
1,544mm61in
1,616mm64in
Rear track
1,590mm63in
1,632mm64in
Ground clearance
145mm6in
204mm8in
Trunk volume
480L
500L
Max trunk volume
1,300L
1,400L
Doors
5
5
Seats
5
5
Fuel tank
60L
67L
CO2 emissions
161g/km
168g/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 Gran Coupe (F36) 420iBMW X4 (F26) 20iPowerTorque
  • BMW 4 Series Gran Coupe (F36) 420i: Power / Torque
  • BMW X4 (F26) 20i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Gran Coupe (F36)420i5,000 rpm1,350-4,600 rpm5,250 rpm
BMWX4 (F26)20i5,000-6,250 rpm1,250-4,500 rpm6,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Gran Coupe (F36)420iBMWX4 (F26)20i
Acceleration checkpoints
0-60 mph
0-97 km/h
7.4 s
7.6 s
0-100 km/h
0-62 mph
7.8 s
8.1 s
0-200 km/h
0-124 mph
35.5 s
55.5 s
Top speed
233 km/h
145 mph
212 km/h
132 mph
Drag race simulation
60 ft
18 m
2.5 s
2.4 s
330 ft
101 m
6.7 s
6.7 s
1/8 mile
201 m
10.2 s
10.2 s
1000 ft
305 m
13.1 s
13.3 s
1/4 mile
402 m
15.6 s
15.9 s
Trap speed
1/4 mile
402 m
147 km/h
91 mph
140 km/h
87 mph

Power comparison

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

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420i
184 hp
137 kW
BMWX4 (F26)20i
184 hp
137 kW

Torque comparison

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

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420i
270 Nm
199 lb-ft
BMWX4 (F26)20i
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 Gran Coupe (F36)420i
1,600 kg
3,527 lb
BMWX4 (F26)20i
1,735 kg
3,825 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 Gran Coupe (F36)420i
233 km/h
145 mph
BMWX4 (F26)20i
212 km/h
132 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420i7.8 s
BMWX4 (F26)20i8.1 s

The biggest 0-100 km/h difference is between BMW 4 Series Gran Coupe (F36) 420i and BMW X4 (F26) 20i: 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
BMW4 Series Gran Coupe (F36)420i
6.9 L/100 km
34.1 mpg US
40.9 mpg UK
BMWX4 (F26)20i
7.2 L/100 km
32.7 mpg US
39.2 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 Gran Coupe (F36)420i
115 hp/t
86 kW/t
8.7 kg/hp
BMWX4 (F26)20i
106 hp/t
79 kW/t
9.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420i
870 km
540 mi
BMWX4 (F26)20i
931 km
578 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Gran Coupe (F36)420i
184 hp
137 kW
7.8 s
233 km/h
145 mph
BMWX4 (F26)20i
184 hp
137 kW
8.1 s
212 km/h
132 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 Gran Coupe (F36)420i
Power
184 hp
137 kW
0-100 km/h7.8 s
Top speed
233 km/h
145 mph
Doors/seats
5 doors
5 seats
Trunk
480 L
17.0 cu ft
Length
4,638 mm
182.6 in
Height
1,404 mm
55.3 in
BMWX4 (F26)20i
Power
184 hp
137 kW
0-100 km/h8.1 s
Top speed
212 km/h
132 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
BMW4 Series Gran Coupe (F36)420i
Power
184 hp
137 kW
0-100 km/h7.8 s
Top speed
233 km/h
145 mph
6.9 L/100 km
34.1 mpg US
40.9 mpg UK
BMWX4 (F26)20i
Power
184 hp
137 kW
0-100 km/h8.1 s
Top speed
212 km/h
132 mph
7.2 L/100 km
32.7 mpg US
39.2 mpg UK

BMW 4 Series Gran Coupe (F36) 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 Gran Coupe (F36)420i
6.9 L/100 km
34.1 mpg US
40.9 mpg UK
7.8 s
BMWX4 (F26)20i
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
8.1 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 Gran Coupe (F36)420i
115 hp/t
86 kW/t
8.7 kg/hp
6.9 L/100 km
34.1 mpg US
40.9 mpg UK
BMWX4 (F26)20i
106 hp/t
79 kW/t
9.4 kg/hp
7.2 L/100 km
32.7 mpg US
39.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Gran Coupe (F36)420iBMWX4 (F26)20i
Power
184 hp
137 kW
184 hp
137 kW
Torque
270 Nm
199 lb-ft
270 Nm
199 lb-ft
Acceleration
7.8 s
8.1 s
Top speed
233 km/h
145 mph
212 km/h
132 mph
Lightness
1,600 kg
3,527 lb
1,735 kg
3,825 lb
Fuel consumption
6.9 L/100 km
34.1 mpg US
40.9 mpg UK
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
480 L
17.0 cu ft
Length
4,638 mm
182.6 in
Height
1,404 mm
55.3 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
870 km
540 mi
931 km
578 mi
CO2 score
161 g/km
168 g/km
Trunk score
480 L
17.0 cu ft
500 L
17.7 cu ft
Power-to-weight score
115 hp/t
86 kW/t
8.7 kg/hp
106 hp/t
79 kW/t
9.4 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 Gran Coupe (F36) 420iBMW X4 (F26) 20i
Consumption6.9 L/100 km34.1 mpg US40.9 mpg UK7.2 L/100 km32.7 mpg US39.2 mpg UK
Cost / 100 km12.08 LC100 km12.60 LC100 km
Cost / 100 mi19.43 LC100 mi20.28 LC100 mi
Annual fuel used1,035 L273 US gal228 UK gal1,080 L285 US gal238 UK gal
Annual fuel cost1,811 LC/year1,890 LC/year

Head-to-head comparisons

BMW 4 Series Gran Coupe (F36) 420i

  • Is 135 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Has 21 km/h (13 mph) higher top speed
  • Uses 0.3 L/100 km less fuel
  • Has 9 hp/t better power-to-weight
  • Emits 7 g/km less CO2

Pros

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

Cons

  • Smallest trunk

BMW X4 (F26) 20i

  • Has 61 km (38 mi) more estimated range
  • Has 20 L more trunk volume

Pros

  • Best estimated range
  • Largest trunk

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 4 Series Gran Coupe (F36) 420i
BMW X4 (F26) 20i
Compare selected cars
2 vehicles selected

Popular comparisons

420i
420i
VS
BMW4 Series Gran Coupe (F36)420ivsBMW4 Series Coupe (F32)420i
20i
20d
VS
BMWX4 (F26)20ivsBMWX4 (G02)20d
420i
420i
VS
BMW4 Series Gran Coupe (F36)420ivsBMW4 Series Coupe (F32)Facelift 2017420i
20i
20i
VS
BMWX4 (F26)20ivsBMWX4 (G02 LCI)Facelift 202120i
420i
420i
VS
BMW4 Series Gran Coupe (F36)420ivsBMW4 Series Gran Coupe (F36)Facelift 2017420i
20i
20i
VS
BMWX4 (F26)20ivsBMWX3 (F25 LCI)Facelift 201420i
420i
420i
VS
BMW4 Series Gran Coupe (F36)420ivsBMW4 Series Gran Coupe (G26)420i
20i
420i
VS
BMWX4 (F26)20ivsBMW4 Series Convertible (F33)420i
420i
420i
VS
BMW4 Series Gran Coupe (F36)420ivsBMW4 Series Coupe (G22)420i
20i
420i
VS
BMWX4 (F26)20ivsBMW4 Series Gran Coupe (F36)420i
420i
420i
VS
BMW4 Series Gran Coupe (F36)420ivsBMW4 Series Convertible (F33)Facelift 2017420i
20i
220i
VS
BMWX4 (F26)20ivsBMW2 Series Convertible (F23)220i
BMW 4 Series Gran Coupe (F36) 420i vs BMW X4 (F26) 20i - car comparison - FastVsFaster