Car comparison

BMW 4 Series Coupe (F32) 420dvsBMW 4 Series Gran Coupe (G26) 420i

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

New comparison

BMW 4 Series Coupe (F32)

420d

184 hp1995 ccDieselAWDManualTurbochargedCoupe2013-2015

BMW 4 Series Gran Coupe (G26)

420i

184 hp1998 ccGasolineRWDAutomaticTurbochargedCoupe2021-2024

Comparison overview

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

BMW 4 Series Coupe (F32) 420d

Quickest 0-100 km/h
7.5 s
Fastest top speed
236 km/h
147 mph
Most powerful
184 hp
137 kW
Highest torque
380 Nm
280 lb-ft
Lightest
1,530 kg
3,373 lb
Best power-to-weight
120 hp/t
90 kW/t
8.3 kg/hp
Lowest combined fuel consumption
4.9 L/100 km
48.0 mpg US
57.6 mpg UK
Best estimated range
1,163 km
723 mi
Best performance score
52/100
Best economy score
94/100

BMW 4 Series Gran Coupe (G26) 420i

Largest trunk
470 L
Best overall score
55/100
Best practicality score
69/100

Specification comparison

Specification comparison
Model	BMW4 Series Coupe (F32)420d	BMW4 Series Gran Coupe (G26)420i
Power	184hp137kW	184hp137kW
Torque	380Nm280lb-ft	300Nm221lb-ft
Curb weight	1,530kg3,373lb	1,620kg3,571lb
Gross weight	2,050kg4,519lb	2,175kg4,795lb
Top speed	236 km/h 147 mph	235 km/h 146 mph
To 99% top speed	95.4s99% target: 234 km/h / 145 mph Calculated	99.3s99% target: 233 km/h / 145 mph Calculated
0-100 km/h	7.5s	7.9s
0-200 km/h	32.6s Calculated	34.6s Calculated
0-60 mph	7.1s Calculated	7.5s Calculated
Fuel consumption	4.9L/100 km48mpg US57.6mpg UK	7.3L/100 km32.2mpg US38.7mpg UK
Fuel consumption city	6L/100 km39.2mpg US47.1mpg UK	-
Fuel consumption highway	4.2L/100 km56mpg US67.3mpg UK	-
Quarter mile	15.4s Calculated	15.7s Calculated
Power-to-weight	120hp/t90kW/t55hp/1000 lb Calculated	114hp/t85kW/t52hp/1000 lb Calculated
Torque-to-weight	248Nm/t166lb-ft/ton Calculated	185Nm/t124lb-ft/ton Calculated
Estimated range	1,163km723mi Calculated	808km502mi Calculated
Displacement	1,995cc122cu in	1,998cc122cu in
Length	4,638mm183in	4,783mm188in
Width	1,825mm72in	1,852mm73in
Height	1,392mm55in	1,442mm57in
Wheelbase	2,810mm111in	2,856mm112in
Front track	1,545mm61in	1,595mm63in
Rear track	1,594mm63in	1,623mm64in
Ground clearance	145mm6in	140mm6in
Trunk volume	445L	470L
Max trunk volume	-	1,290L
Doors	2	5
Seats	4	5
Fuel tank	57L	59L
CO2 emissions	129g/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 Coupe (F32) 420dBMW 4 Series Gran Coupe (G26) 420iPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW4 Series Coupe (F32)420d	4,000 rpm	1,750-2,500 rpm	4,250 rpm
BMW4 Series Gran Coupe (G26)420i	5,000-6,500 rpm	1,350-4,000 rpm	6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW4 Series Coupe (F32)420d	BMW4 Series Gran Coupe (G26)420i
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.1 s	7.5 s
0-100 km/h 0-62 mph	7.5 s	7.9 s
0-200 km/h 0-124 mph	32.6 s	34.6 s
Top speed	236 km/h 147 mph	235 km/h 146 mph
	Drag race simulation
60 ft 18 m	2.5 s	2.6 s
330 ft 101 m	6.7 s	6.8 s
1/8 mile 201 m	10.0 s	10.3 s
1000 ft 305 m	13.0 s	13.2 s
1/4 mile 402 m	15.4 s	15.7 s
Trap speed 1/4 mile 402 m	150 km/h 93 mph	147 km/h 91 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (F32)420d	184 hp 137 kW
BMW4 Series Gran Coupe (G26)420i	184 hp 137 kW

Torque comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (F32)420d	380 Nm 280 lb-ft
BMW4 Series Gran Coupe (G26)420i	300 Nm 221 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (F32)420d	1,530 kg 3,373 lb
BMW4 Series Gran Coupe (G26)420i	1,620 kg 3,571 lb

Top speed without limiter comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (F32)420d	236 km/h 147 mph
BMW4 Series Gran Coupe (G26)420i	235 km/h 146 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (F32)420d	7.5 s
BMW4 Series Gran Coupe (G26)420i	7.9 s

The biggest 0-100 km/h difference is between BMW 4 Series Coupe (F32) 420d and BMW 4 Series Gran Coupe (G26) 420i: 0.4 s.

Fuel consumption comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (F32)420d	4.9 L/100 km 48.0 mpg US 57.6 mpg UK
BMW4 Series Gran Coupe (G26)420i	7.3 L/100 km 32.2 mpg US 38.7 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Coupe (F32) 420d and BMW 4 Series Gran Coupe (G26) 420i: 2.4 L/100 km.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (F32)420d	120 hp/t 90 kW/t 8.3 kg/hp
BMW4 Series Gran Coupe (G26)420i	114 hp/t 85 kW/t 8.8 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (F32)420d	1,163 km 723 mi
BMW4 Series Gran Coupe (G26)420i	808 km 502 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW4 Series Coupe (F32)420d	184 hp 137 kW	7.5 s	236 km/h 147 mph
BMW4 Series Gran Coupe (G26)420i	184 hp 137 kW	7.9 s	235 km/h 146 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Vehicle

Performance score

Practicality score

BMW4 Series Coupe (F32)420d

Power	184 hp 137 kW
0-100 km/h	7.5 s
Top speed 236 km/h 147 mph

Doors/seats	2 doors 4 seats
Trunk	445 L 15.7 cu ft
Length	4,638 mm 182.6 in
Height	1,392 mm 54.8 in

BMW4 Series Gran Coupe (G26)420i

Power	184 hp 137 kW
0-100 km/h	7.9 s
Top speed 235 km/h 146 mph

Doors/seats	5 doors 5 seats
Trunk	470 L 16.6 cu ft
Length	4,783 mm 188.3 in
Height	1,442 mm 56.8 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Vehicle

Performance score

Fuel economy score

BMW4 Series Coupe (F32)420d

Power	184 hp 137 kW
0-100 km/h	7.5 s
Top speed 236 km/h 147 mph

4.9 L/100 km

48.0 mpg US

57.6 mpg UK

BMW4 Series Gran Coupe (G26)420i

Power	184 hp 137 kW
0-100 km/h	7.9 s
Top speed 235 km/h 146 mph

7.3 L/100 km

32.2 mpg US

38.7 mpg UK

BMW 4 Series Coupe (F32) 420d 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
BMW4 Series Coupe (F32)420d	4.9 L/100 km 48.0 mpg US 57.6 mpg UK	7.5 s
BMW4 Series Gran Coupe (G26)420i	7.3 L/100 km 32.2 mpg US 38.7 mpg UK	7.9 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
BMW4 Series Coupe (F32)420d	120 hp/t 90 kW/t 8.3 kg/hp	4.9 L/100 km 48.0 mpg US 57.6 mpg UK
BMW4 Series Gran Coupe (G26)420i	114 hp/t 85 kW/t 8.8 kg/hp	7.3 L/100 km 32.2 mpg US 38.7 mpg UK

Detailed score breakdown

Vehicle

BMW4 Series Coupe (F32)420d

BMW4 Series Gran Coupe (G26)420i

Power

184 hp

137 kW

184 hp

137 kW

Torque

380 Nm

280 lb-ft

300 Nm

221 lb-ft

Acceleration

7.5 s

7.9 s

Top speed

236 km/h

147 mph

235 km/h

146 mph

Lightness

1,530 kg

3,373 lb

1,620 kg

3,571 lb

Fuel consumption

4.9 L/100 km

48.0 mpg US

57.6 mpg UK

7.3 L/100 km

32.2 mpg US

38.7 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	445 L 15.7 cu ft
Length	4,638 mm 182.6 in
Height	1,392 mm 54.8 in

Doors/seats	5 doors 5 seats
Trunk	470 L 16.6 cu ft
Length	4,783 mm 188.3 in
Height	1,442 mm 56.8 in

Range score

1,163 km

723 mi

808 km

502 mi

CO2 score

129 g/km

Trunk score

445 L

15.7 cu ft

470 L

16.6 cu ft

Power-to-weight score

120 hp/t

90 kW/t

8.3 kg/hp

114 hp/t

85 kW/t

8.8 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	BMW 4 Series Coupe (F32) 420d	BMW 4 Series Gran Coupe (G26) 420i
Consumption	4.9 L/100 km48 mpg US57.6 mpg UK	7.3 L/100 km32.2 mpg US38.7 mpg UK
Cost / 100 km	8.58 LC100 km	12.78 LC100 km
Cost / 100 mi	13.80 LC100 mi	20.56 LC100 mi
Annual fuel used	735 L194 US gal162 UK gal	1,095 L289 US gal241 UK gal
Annual fuel cost	1,286 LC/year	1,916 LC/year