Car comparison

BMW 6 Series Gran Coupe (F06) 640ivsBMW 4 Series Coupe (F32) 428i

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

New comparison

BMW 6 Series Gran Coupe (F06)

640i

320 hp2979 ccGasolineAWDAutomaticTurbochargedCoupe2013-2015
VS

BMW 4 Series Coupe (F32)

428i

245 hp1997 ccGasolineAWDAutomaticTurbochargedCoupe2013-2016

Comparison overview

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

Best choices

BMW 6 Series Gran Coupe (F06) 640i

  • Quickest 0-100 km/h
    5.3 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    320 hp
    239 kW
  • Highest torque
    450 Nm
    332 lb-ft
  • Best power-to-weight
    175 hp/t
    131 kW/t
    5.7 kg/hp
  • Largest trunk
    460 L
  • Best overall score
    65/100
  • Best performance score
    67/100
  • Best practicality score
    60/100

BMW 4 Series Coupe (F32) 428i

  • Lightest
    1,540 kg
    3,395 lb
  • 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 highway consumption
    5.6 L/100 km
    42.0 mpg US
    50.4 mpg UK
  • Best estimated range
    882 km
    548 mi
  • Best economy score
    89/100

Specification comparison

Specification comparison
ModelBMW6 Series Gran Coupe (F06)640iBMW4 Series Coupe (F32)428i
Power
320hp239kW
245hp183kW
Torque
450Nm332lb-ft
350Nm258lb-ft
Curb weight
1,825kg4,023lb
1,540kg3,395lb
Gross weight
2,430kg5,357lb
2,060kg4,542lb
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
79.2s99% target: 257 km/h / 160 mph
Calculated
81.8s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.3s
5.8s
0-200 km/h
20.0s
Calculated
21.3s
Calculated
0-60 mph
5.0s
Calculated
5.5s
Calculated
Fuel consumption
8.3L/100 km28.3mpg US34.0mpg UK
6.8L/100 km34.6mpg US41.5mpg UK
Fuel consumption city
11.3L/100 km20.8mpg US25.0mpg UK
8.8L/100 km26.7mpg US32.1mpg UK
Fuel consumption highway
6.6L/100 km35.6mpg US42.8mpg UK
5.6L/100 km42mpg US50.4mpg UK
Quarter mile
13.5s
Calculated
13.9s
Calculated
Power-to-weight
175hp/t131kW/t80hp/1000 lb
Calculated
159hp/t119kW/t72hp/1000 lb
Calculated
Torque-to-weight
247Nm/t165lb-ft/ton
Calculated
227Nm/t152lb-ft/ton
Calculated
Estimated range
843km524mi
Calculated
882km548mi
Calculated
Displacement
2,979cc182cu in
1,997cc122cu in
Length
5,007mm197in
4,638mm183in
Width
1,894mm75in
1,825mm72in
Height
1,392mm55in
1,377mm54in
Wheelbase
2,968mm117in
2,810mm111in
Front track
1,600mm63in
1,545mm61in
Rear track
1,665mm66in
1,594mm63in
Ground clearance
126mm5in
145mm6in
Trunk volume
460L
445L
Max trunk volume
1,265L
-
Doors
4
2
Seats
4
4
Fuel tank
70L
60L
CO2 emissions
193g/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 6 Series Gran Coupe (F06) 640iBMW 4 Series Coupe (F32) 428iPowerTorque
  • BMW 6 Series Gran Coupe (F06) 640i: Power / Torque
  • BMW 4 Series Coupe (F32) 428i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Gran Coupe (F06)640i5,800-6,000 rpm1,300-4,500 rpm6,250 rpm
BMW4 Series Coupe (F32)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
MetricBMW6 Series Gran Coupe (F06)640iBMW4 Series Coupe (F32)428i
Acceleration checkpoints
0-60 mph
0-97 km/h
5.0 s
5.5 s
0-100 km/h
0-62 mph
5.3 s
5.8 s
0-200 km/h
0-124 mph
20.0 s
21.3 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
Limited
Drag race simulation
60 ft
18 m
2.2 s
2.3 s
330 ft
101 m
5.8 s
6.0 s
1/8 mile
201 m
8.8 s
9.1 s
1000 ft
305 m
11.3 s
11.7 s
1/4 mile
402 m
13.5 s
13.9 s
Trap speed
1/4 mile
402 m
170 km/h
105 mph
166 km/h
103 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Gran Coupe (F06)640i
320 hp
239 kW
BMW4 Series Coupe (F32)428i
245 hp
183 kW

BMW 6 Series Gran Coupe (F06) 640i has 75 hp more than BMW 4 Series Coupe (F32) 428i.

The biggest power difference is between BMW 4 Series Coupe (F32) 428i and BMW 6 Series Gran Coupe (F06) 640i: 75 hp (56 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Gran Coupe (F06)640i
450 Nm
332 lb-ft
BMW4 Series Coupe (F32)428i
350 Nm
258 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW6 Series Gran Coupe (F06)640i
1,825 kg
4,023 lb
BMW4 Series Coupe (F32)428i
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
BMW6 Series Gran Coupe (F06)640i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW4 Series Coupe (F32)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
BMW6 Series Gran Coupe (F06)640i5.3 s
BMW4 Series Coupe (F32)428i5.8 s

The biggest 0-100 km/h difference is between BMW 6 Series Gran Coupe (F06) 640i and BMW 4 Series Coupe (F32) 428i: 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
BMW6 Series Gran Coupe (F06)640i
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
BMW4 Series Coupe (F32)428i
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Coupe (F32) 428i and BMW 6 Series Gran Coupe (F06) 640i: 1.5 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
BMW6 Series Gran Coupe (F06)640i
175 hp/t
131 kW/t
5.7 kg/hp
BMW4 Series Coupe (F32)428i
159 hp/t
119 kW/t
6.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW6 Series Gran Coupe (F06)640i
843 km
524 mi
BMW4 Series Coupe (F32)428i
882 km
548 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Gran Coupe (F06)640i
320 hp
239 kW
5.3 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW4 Series Coupe (F32)428i
245 hp
183 kW
5.8 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
BMW6 Series Gran Coupe (F06)640i
Power
320 hp
239 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
4 seats
Trunk
460 L
16.2 cu ft
Length
5,007 mm
197.1 in
Height
1,392 mm
54.8 in
BMW4 Series Coupe (F32)428i
Power
245 hp
183 kW
0-100 km/h5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
445 L
15.7 cu ft
Length
4,638 mm
182.6 in
Height
1,377 mm
54.2 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
BMW6 Series Gran Coupe (F06)640i
Power
320 hp
239 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
BMW4 Series Coupe (F32)428i
Power
245 hp
183 kW
0-100 km/h5.8 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 6 Series Gran Coupe (F06) 640i 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
BMW6 Series Gran Coupe (F06)640i
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
5.3 s
BMW4 Series Coupe (F32)428i
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
5.8 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
BMW6 Series Gran Coupe (F06)640i
175 hp/t
131 kW/t
5.7 kg/hp
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
BMW4 Series Coupe (F32)428i
159 hp/t
119 kW/t
6.3 kg/hp
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Gran Coupe (F06)640iBMW4 Series Coupe (F32)428i
Power
320 hp
239 kW
245 hp
183 kW
Torque
450 Nm
332 lb-ft
350 Nm
258 lb-ft
Acceleration
5.3 s
5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,825 kg
4,023 lb
1,540 kg
3,395 lb
Fuel consumption
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
Practicality
Doors/seats
4 doors
4 seats
Trunk
460 L
16.2 cu ft
Length
5,007 mm
197.1 in
Height
1,392 mm
54.8 in
Doors/seats
2 doors
4 seats
Trunk
445 L
15.7 cu ft
Length
4,638 mm
182.6 in
Height
1,377 mm
54.2 in
Range score
843 km
524 mi
882 km
548 mi
CO2 score
193 g/km
-
Trunk score
460 L
16.2 cu ft
445 L
15.7 cu ft
Power-to-weight score
175 hp/t
131 kW/t
5.7 kg/hp
159 hp/t
119 kW/t
6.3 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 6 Series Gran Coupe (F06) 640iBMW 4 Series Coupe (F32) 428i
Consumption8.3 L/100 km28.3 mpg US34 mpg UK6.8 L/100 km34.6 mpg US41.5 mpg UK
Cost / 100 km14.53 LC100 km11.90 LC100 km
Cost / 100 mi23.38 LC100 mi19.15 LC100 mi
Annual fuel used1,245 L329 US gal274 UK gal1,020 L269 US gal224 UK gal
Annual fuel cost2,179 LC/year1,785 LC/year

Head-to-head comparisons

BMW 6 Series Gran Coupe (F06) 640i

  • Has 75 hp more
  • Has 100 Nm more
  • Is 0.5 s quicker from 0-100 km/h
  • Has 16 hp/t better power-to-weight
  • Has 15 L more trunk volume

Pros

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

Cons

  • Highest combined fuel consumption
  • Heaviest

BMW 4 Series Coupe (F32) 428i

  • Is 285 kg lighter
  • Uses 1.5 L/100 km less fuel
  • Has 39 km (24 mi) more estimated range

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Gran Coupe (F06) 640i
BMW 4 Series Coupe (F32) 428i
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BMW 6 Series Gran Coupe (F06) 640i vs BMW 4 Series Coupe (F32) 428i - car comparison - FastVsFaster