Car comparison

BMW 4 Series Coupe (G22) 420ivsBMW X3 (G01 LCI) · Facelift 2021 20i

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

New comparison

BMW 4 Series Coupe (G22)

420i

184 hp1998 ccGasolineRWDAutomaticTurbochargedCoupe2020-2024

BMW X3 (G01 LCI) · Facelift 2021

20i

184 hp1998 ccGasolineAWDAutomaticTurbocharged2021-2024

Comparison overview

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

BMW 4 Series Coupe (G22) 420i

Quickest 0-100 km/h
7.5 s
Fastest top speed
240 km/h
149 mph
Most powerful
184 hp
137 kW
Highest torque
300 Nm
221 lb-ft
Lightest
1,525 kg
3,362 lb
Best power-to-weight
121 hp/t
90 kW/t
8.3 kg/hp
Lowest combined fuel consumption
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
Best estimated range
1,017 km
632 mi
Best performance score
52/100
Best economy score
91/100

BMW X3 (G01 LCI) Facelift 2021 20i

Largest trunk
550 L
Best overall score
55/100
Best practicality score
77/100

Specification comparison

Specification comparison
Model	BMW4 Series Coupe (G22)420i	BMWX3 (G01 LCI)Facelift 202120i
Power	184hp137kW	184hp137kW
Torque	300Nm221lb-ft	300Nm221lb-ft
Curb weight	1,525kg3,362lb	1,800kg3,968lb
Gross weight	2,015kg4,442lb	2,410kg5,313lb
Top speed	240 km/h 149 mph	215 km/h 134 mph
To 99% top speed	92.8s99% target: 238 km/h / 148 mph Calculated	103.8s99% target: 213 km/h / 132 mph Calculated
0-100 km/h	7.5s	8.4s
0-200 km/h	30.7s Calculated	52.1s Calculated
0-60 mph	7.1s Calculated	7.9s Calculated
Fuel consumption	5.8L/100 km40.6mpg US48.7mpg UK	8.4L/100 km28mpg US33.6mpg UK
Fuel consumption city	7.2L/100 km32.7mpg US39.2mpg UK	-
Fuel consumption highway	5L/100 km47mpg US56.5mpg UK	-
Quarter mile	15.4s Calculated	16.1s Calculated
Power-to-weight	121hp/t90kW/t55hp/1000 lb Calculated	102hp/t76kW/t46hp/1000 lb Calculated
Torque-to-weight	197Nm/t132lb-ft/ton Calculated	167Nm/t112lb-ft/ton Calculated
Estimated range	1,017km632mi Calculated	774km481mi Calculated
Displacement	1,998cc122cu in	1,998cc122cu in
Length	4,768mm188in	4,708mm185in
Width	1,852mm73in	1,891mm74in
Height	1,383mm54in	1,676mm66in
Wheelbase	2,851mm112in	2,864mm113in
Front track	1,575mm62in	1,620mm64in
Rear track	1,611mm63in	1,636mm64in
Ground clearance	127mm5in	204mm8in
Trunk volume	440L	550L
Max trunk volume	-	1,600L
Doors	2	5
Seats	4	5
Fuel tank	59L	65L

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 (G22) 420iBMW X3 (G01 LCI) Facelift 2021 20iPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW4 Series Coupe (G22)420i	5,000-6,500 rpm	1,350-4,000 rpm	6,750 rpm
BMWX3 (G01 LCI)Facelift 202120i	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 (G22)420i	BMWX3 (G01 LCI)Facelift 202120i
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.1 s	7.9 s
0-100 km/h 0-62 mph	7.5 s	8.4 s
0-200 km/h 0-124 mph	30.7 s	52.1 s
Top speed	240 km/h 149 mph	215 km/h 134 mph
	Drag race simulation
60 ft 18 m	2.5 s	2.5 s
330 ft 101 m	6.7 s	6.8 s
1/8 mile 201 m	10.1 s	10.4 s
1000 ft 305 m	13.0 s	13.5 s
1/4 mile 402 m	15.4 s	16.1 s
Trap speed 1/4 mile 402 m	151 km/h 94 mph	140 km/h 87 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (G22)420i	184 hp 137 kW
BMWX3 (G01 LCI)Facelift 202120i	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 (G22)420i	300 Nm 221 lb-ft
BMWX3 (G01 LCI)Facelift 202120i	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 (G22)420i	1,525 kg 3,362 lb
BMWX3 (G01 LCI)Facelift 202120i	1,800 kg 3,968 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 (G22)420i	240 km/h 149 mph
BMWX3 (G01 LCI)Facelift 202120i	215 km/h 134 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 (G22)420i	7.5 s
BMWX3 (G01 LCI)Facelift 202120i	8.4 s

The biggest 0-100 km/h difference is between BMW 4 Series Coupe (G22) 420i and BMW X3 (G01 LCI) Facelift 2021 20i: 0.9 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 (G22)420i	5.8 L/100 km 40.6 mpg US 48.7 mpg UK
BMWX3 (G01 LCI)Facelift 202120i	8.4 L/100 km 28.0 mpg US 33.6 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Coupe (G22) 420i and BMW X3 (G01 LCI) Facelift 2021 20i: 2.6 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 (G22)420i	121 hp/t 90 kW/t 8.3 kg/hp
BMWX3 (G01 LCI)Facelift 202120i	102 hp/t 76 kW/t 9.8 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW4 Series Coupe (G22)420i	1,017 km 632 mi
BMWX3 (G01 LCI)Facelift 202120i	774 km 481 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW4 Series Coupe (G22)420i	184 hp 137 kW	7.5 s	240 km/h 149 mph
BMWX3 (G01 LCI)Facelift 202120i	184 hp 137 kW	8.4 s	215 km/h 134 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 (G22)420i

Power	184 hp 137 kW
0-100 km/h	7.5 s
Top speed 240 km/h 149 mph

Doors/seats	2 doors 4 seats
Trunk	440 L 15.5 cu ft
Length	4,768 mm 187.7 in
Height	1,383 mm 54.4 in

BMWX3 (G01 LCI)Facelift 202120i

Power	184 hp 137 kW
0-100 km/h	8.4 s
Top speed 215 km/h 134 mph

Doors/seats	5 doors 5 seats
Trunk	550 L 19.4 cu ft
Length	4,708 mm 185.4 in
Height	1,676 mm 66.0 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 (G22)420i

Power	184 hp 137 kW
0-100 km/h	7.5 s
Top speed 240 km/h 149 mph

5.8 L/100 km

40.6 mpg US

48.7 mpg UK

BMWX3 (G01 LCI)Facelift 202120i

Power	184 hp 137 kW
0-100 km/h	8.4 s
Top speed 215 km/h 134 mph

8.4 L/100 km

28.0 mpg US

33.6 mpg UK

BMW 4 Series Coupe (G22) 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 Coupe (G22)420i	5.8 L/100 km 40.6 mpg US 48.7 mpg UK	7.5 s
BMWX3 (G01 LCI)Facelift 202120i	8.4 L/100 km 28.0 mpg US 33.6 mpg UK	8.4 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 (G22)420i	121 hp/t 90 kW/t 8.3 kg/hp	5.8 L/100 km 40.6 mpg US 48.7 mpg UK
BMWX3 (G01 LCI)Facelift 202120i	102 hp/t 76 kW/t 9.8 kg/hp	8.4 L/100 km 28.0 mpg US 33.6 mpg UK

Detailed score breakdown

Vehicle

BMW4 Series Coupe (G22)420i

BMWX3 (G01 LCI)Facelift 202120i

Power

184 hp

137 kW

184 hp

137 kW

Torque

300 Nm

221 lb-ft

300 Nm

221 lb-ft

Acceleration

7.5 s

8.4 s

Top speed

240 km/h

149 mph

215 km/h

134 mph

Lightness

1,525 kg

3,362 lb

1,800 kg

3,968 lb

Fuel consumption

5.8 L/100 km

40.6 mpg US

48.7 mpg UK

8.4 L/100 km

28.0 mpg US

33.6 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	440 L 15.5 cu ft
Length	4,768 mm 187.7 in
Height	1,383 mm 54.4 in

Doors/seats	5 doors 5 seats
Trunk	550 L 19.4 cu ft
Length	4,708 mm 185.4 in
Height	1,676 mm 66.0 in

Range score

1,017 km

632 mi

774 km

481 mi

Trunk score

440 L

15.5 cu ft

550 L

19.4 cu ft

Power-to-weight score

121 hp/t

90 kW/t

8.3 kg/hp

102 hp/t

76 kW/t

9.8 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 (G22) 420i	BMW X3 (G01 LCI) Facelift 2021 20i
Consumption	5.8 L/100 km40.6 mpg US48.7 mpg UK	8.4 L/100 km28 mpg US33.6 mpg UK
Cost / 100 km	10.15 LC100 km	14.70 LC100 km
Cost / 100 mi	16.33 LC100 mi	23.66 LC100 mi
Annual fuel used	870 L230 US gal191 UK gal	1,260 L333 US gal277 UK gal
Annual fuel cost	1,523 LC/year	2,205 LC/year