Car comparison

BMW 4 Series Gran Coupe (G26) 420ivsBMW 2 Series Coupe (G42) 218i

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

New comparison

BMW 4 Series Gran Coupe (G26)

420i

170 hp1597 ccGasolineRWDAutomaticTurbochargedCoupe2021-2024

BMW 2 Series Coupe (G42)

218i

156 hp1998 ccGasolineRWDAutomaticTurbochargedCoupe2022-present

Comparison overview

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

BMW 4 Series Gran Coupe (G26) 420i

Quickest 0-100 km/h
8.6 s
Fastest top speed
227 km/h
141 mph
Most powerful
170 hp
127 kW
Highest torque
250 Nm
184 lb-ft
Largest trunk
470 L
Best overall score
53/100
Best performance score
45/100
Best practicality score
69/100

BMW 2 Series Coupe (G42) 218i

Lightest
1,485 kg
3,274 lb
Best power-to-weight
105 hp/t
78 kW/t
9.5 kg/hp
Lowest combined fuel consumption
7.1 L/100 km
33.1 mpg US
39.8 mpg UK
Best estimated range
732 km
455 mi
Best economy score
88/100

Specification comparison

Specification comparison
Model	BMW4 Series Gran Coupe (G26)420i	BMW2 Series Coupe (G42)218i
Power	170hp127kW	156hp116kW
Torque	250Nm184lb-ft	250Nm184lb-ft
Curb weight	1,620kg3,571lb	1,485kg3,274lb
Gross weight	2,175kg4,795lb	1,960kg4,321lb
Top speed	227 km/h 141 mph	224 km/h 139 mph
To 99% top speed	104.2s99% target: 225 km/h / 140 mph Calculated	98.8s99% target: 222 km/h / 138 mph Calculated
0-100 km/h	8.6s	8.7s
0-200 km/h	41.2s Calculated	42.0s Calculated
0-60 mph	8.1s Calculated	8.2s Calculated
Fuel consumption	8.1L/100 km29mpg US34.9mpg UK	7.1L/100 km33.1mpg US39.8mpg UK
Fuel consumption city	8L/100 km29.4mpg US35.3mpg UK	-
Fuel consumption highway	7L/100 km33.6mpg US40.4mpg UK	-
Quarter mile	16.2s Calculated	16.3s Calculated
Power-to-weight	105hp/t78kW/t48hp/1000 lb Calculated	105hp/t78kW/t48hp/1000 lb Calculated
Torque-to-weight	154Nm/t103lb-ft/ton Calculated	168Nm/t113lb-ft/ton Calculated
Estimated range	728km453mi Calculated	732km455mi Calculated
Displacement	1,597cc97cu in	1,998cc122cu in
Length	4,783mm188in	4,537mm179in
Width	1,852mm73in	1,838mm72in
Height	1,442mm57in	1,390mm55in
Wheelbase	2,856mm112in	2,741mm108in
Front track	1,595mm63in	1,575mm62in
Rear track	1,623mm64in	1,588mm63in
Ground clearance	-	128mm5in
Trunk volume	470L	390L
Max trunk volume	1,290L	-
Doors	5	2
Seats	5	4
Fuel tank	59L	52L

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 (G26) 420iBMW 2 Series Coupe (G42) 218iPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW4 Series Gran Coupe (G26)420i	5,000-5,500 rpm	2,000-4,400 rpm	5,750 rpm
BMW2 Series Coupe (G42)218i	4,500-6,500 rpm	1,300-4,300 rpm	6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW4 Series Gran Coupe (G26)420i	BMW2 Series Coupe (G42)218i
	Acceleration checkpoints
0-60 mph 0-97 km/h	8.1 s	8.2 s
0-100 km/h 0-62 mph	8.6 s	8.7 s
0-200 km/h 0-124 mph	41.2 s	42.0 s
Top speed	227 km/h 141 mph	224 km/h 139 mph
	Drag race simulation
60 ft 18 m	2.6 s	2.7 s
330 ft 101 m	7.0 s	7.1 s
1/8 mile 201 m	10.6 s	10.7 s
1000 ft 305 m	13.7 s	13.7 s
1/4 mile 402 m	16.2 s	16.3 s
Trap speed 1/4 mile 402 m	142 km/h 88 mph	142 km/h 88 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (G26)420i	170 hp 127 kW
BMW2 Series Coupe (G42)218i	156 hp 116 kW

BMW 4 Series Gran Coupe (G26) 420i has 14 hp more than BMW 2 Series Coupe (G42) 218i.

The biggest power difference is between BMW 2 Series Coupe (G42) 218i and BMW 4 Series Gran Coupe (G26) 420i: 14 hp (10 kW).

Torque comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (G26)420i	250 Nm 184 lb-ft
BMW2 Series Coupe (G42)218i	250 Nm 184 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (G26)420i	1,620 kg 3,571 lb
BMW2 Series Coupe (G42)218i	1,485 kg 3,274 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 Gran Coupe (G26)420i	227 km/h 141 mph
BMW2 Series Coupe (G42)218i	224 km/h 139 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 Gran Coupe (G26)420i	8.6 s
BMW2 Series Coupe (G42)218i	8.7 s

The biggest 0-100 km/h difference is between BMW 4 Series Gran Coupe (G26) 420i and BMW 2 Series Coupe (G42) 218i: 0.1 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 Gran Coupe (G26)420i	8.1 L/100 km 29.0 mpg US 34.9 mpg UK
BMW2 Series Coupe (G42)218i	7.1 L/100 km 33.1 mpg US 39.8 mpg UK

The biggest fuel consumption difference is between BMW 2 Series Coupe (G42) 218i and BMW 4 Series Gran Coupe (G26) 420i: 1.0 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 Gran Coupe (G26)420i	105 hp/t 78 kW/t 9.5 kg/hp
BMW2 Series Coupe (G42)218i	105 hp/t 78 kW/t 9.5 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (G26)420i	728 km 453 mi
BMW2 Series Coupe (G42)218i	732 km 455 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW4 Series Gran Coupe (G26)420i	170 hp 127 kW	8.6 s	227 km/h 141 mph
BMW2 Series Coupe (G42)218i	156 hp 116 kW	8.7 s	224 km/h 139 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 Gran Coupe (G26)420i

Power	170 hp 127 kW
0-100 km/h	8.6 s
Top speed 227 km/h 141 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

BMW2 Series Coupe (G42)218i

Power	156 hp 116 kW
0-100 km/h	8.7 s
Top speed 224 km/h 139 mph

Doors/seats	2 doors 4 seats
Trunk	390 L 13.8 cu ft
Length	4,537 mm 178.6 in
Height	1,390 mm 54.7 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 Gran Coupe (G26)420i

Power	170 hp 127 kW
0-100 km/h	8.6 s
Top speed 227 km/h 141 mph

8.1 L/100 km

29.0 mpg US

34.9 mpg UK

BMW2 Series Coupe (G42)218i

Power	156 hp 116 kW
0-100 km/h	8.7 s
Top speed 224 km/h 139 mph

7.1 L/100 km

33.1 mpg US

39.8 mpg UK

BMW 4 Series Gran Coupe (G26) 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
BMW4 Series Gran Coupe (G26)420i	8.1 L/100 km 29.0 mpg US 34.9 mpg UK	8.6 s
BMW2 Series Coupe (G42)218i	7.1 L/100 km 33.1 mpg US 39.8 mpg UK	8.7 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 Gran Coupe (G26)420i	105 hp/t 78 kW/t 9.5 kg/hp	8.1 L/100 km 29.0 mpg US 34.9 mpg UK
BMW2 Series Coupe (G42)218i	105 hp/t 78 kW/t 9.5 kg/hp	7.1 L/100 km 33.1 mpg US 39.8 mpg UK

Detailed score breakdown

Vehicle

BMW4 Series Gran Coupe (G26)420i

BMW2 Series Coupe (G42)218i

Power

170 hp

127 kW

156 hp

116 kW

Torque

250 Nm

184 lb-ft

250 Nm

184 lb-ft

Acceleration

8.6 s

8.7 s

Top speed

227 km/h

141 mph

224 km/h

139 mph

Lightness

1,620 kg

3,571 lb

1,485 kg

3,274 lb

Fuel consumption

8.1 L/100 km

29.0 mpg US

34.9 mpg UK

7.1 L/100 km

33.1 mpg US

39.8 mpg UK

Practicality

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

Doors/seats	2 doors 4 seats
Trunk	390 L 13.8 cu ft
Length	4,537 mm 178.6 in
Height	1,390 mm 54.7 in

Range score

728 km

453 mi

732 km

455 mi

Trunk score

470 L

16.6 cu ft

390 L

13.8 cu ft

Power-to-weight score

105 hp/t

78 kW/t

9.5 kg/hp

105 hp/t

78 kW/t

9.5 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 Gran Coupe (G26) 420i	BMW 2 Series Coupe (G42) 218i
Consumption	8.1 L/100 km29 mpg US34.9 mpg UK	7.1 L/100 km33.1 mpg US39.8 mpg UK
Cost / 100 km	14.17 LC100 km	12.42 LC100 km
Cost / 100 mi	22.81 LC100 mi	20.00 LC100 mi
Annual fuel used	1,215 L321 US gal267 UK gal	1,065 L281 US gal234 UK gal
Annual fuel cost	2,126 LC/year	1,864 LC/year