Car comparison

BMW 4 Series Coupe (G22) 420ivsFiat Fastback 1.3 T270

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

Fiat Fastback

1.3 T270

180 hp1332 ccGasolineFWDAutomaticTurbochargedCoupe2022-present

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
Lowest city consumption
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
Lowest highway consumption
5.0 L/100 km
47.0 mpg US
56.5 mpg UK
Best performance score
52/100
Best economy score
91/100

Fiat Fastback 1.3 T270

Lightest
1,304 kg
2,875 lb
Best power-to-weight
138 hp/t
103 kW/t
7.2 kg/hp
Largest trunk
600 L
Best overall score
56/100
Best practicality score
73/100

Specification comparison

Specification comparison
Model	BMW4 Series Coupe (G22)420i	FiatFastback1.3 T270
Power	184hp137kW	180hp134kW
Torque	300Nm221lb-ft	270Nm199lb-ft
Curb weight	1,525kg3,362lb	1,304kg2,875lb
Gross weight	2,015kg4,442lb	1,704kg3,757lb
Top speed	240 km/h 149 mph	Unrestricted 220 km/h137 mph Restricted 210 km/h130 mph Calculated
To 99% top speed	92.1s99% target: 238 km/h / 148 mph Calculated	90.7s99% target: 218 km/h / 135 mph Calculated
0-100 km/h	7.5s	8.1s
0-200 km/h	30.6s Calculated	41.7s Calculated
0-60 mph	7.1s Calculated	7.7s Calculated
Fuel consumption	5.8L/100 km40.6mpg US48.7mpg UK	-
Fuel consumption city	7.2L/100 km32.7mpg US39.2mpg UK	12.7L/100 km18.5mpg US22.2mpg UK
Fuel consumption highway	5L/100 km47mpg US56.5mpg UK	10.3L/100 km22.8mpg US27.4mpg UK
Quarter mile	15.4s Calculated	15.9s Calculated
Power-to-weight	121hp/t90kW/t55hp/1000 lb Calculated	138hp/t103kW/t63hp/1000 lb Calculated
Torque-to-weight	197Nm/t132lb-ft/ton Calculated	207Nm/t139lb-ft/ton Calculated
Estimated range	1,017km632mi Calculated	-
Displacement	1,998cc122cu in	1,332cc81cu in
Length	4,768mm188in	4,427mm174in
Width	1,852mm73in	1,774mm70in
Height	1,383mm54in	1,545mm61in
Wheelbase	2,851mm112in	2,532mm100in
Front track	1,575mm62in	1,484mm58in
Rear track	1,611mm63in	1,510mm59in
Ground clearance	127mm5in	189mm7in
Trunk volume	440L	600L
Max trunk volume	-	1,087L
Doors	2	5
Seats	4	5
Fuel tank	59L	47L

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) 420iFiat Fastback 1.3 T270PowerTorque

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
FiatFastback1.3 T270	5,750 rpm	1,750 rpm	6,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW4 Series Coupe (G22)420i	FiatFastback1.3 T270
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.1 s	7.7 s
0-100 km/h 0-62 mph	7.5 s	8.1 s
0-200 km/h 0-124 mph	30.6 s	41.7 s
Top speed	240 km/h 149 mph	Unrestricted 220 km/h137 mph Restricted 210 km/h130 mph Likely limited
	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	10.1 s	10.3 s
1000 ft 305 m	13.0 s	13.4 s
1/4 mile 402 m	15.4 s	15.9 s
Trap speed 1/4 mile 402 m	151 km/h 94 mph	144 km/h 90 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
FiatFastback1.3 T270	180 hp 134 kW

BMW 4 Series Coupe (G22) 420i has 4 hp more than Fiat Fastback 1.3 T270.

The biggest power difference is between Fiat Fastback 1.3 T270 and BMW 4 Series Coupe (G22) 420i: 4 hp (3 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
FiatFastback1.3 T270	270 Nm 199 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
FiatFastback1.3 T270	1,304 kg 2,875 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
FiatFastback1.3 T270	Unrestricted 220 km/h137 mph Restricted 210 km/h130 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
FiatFastback1.3 T270	8.1 s

The biggest 0-100 km/h difference is between BMW 4 Series Coupe (G22) 420i and Fiat Fastback 1.3 T270: 0.6 s.

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
FiatFastback1.3 T270	138 hp/t 103 kW/t 7.2 kg/hp

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
FiatFastback1.3 T270	180 hp 134 kW	8.1 s	Unrestricted 220 km/h137 mph Restricted 210 km/h130 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

FiatFastback1.3 T270

Power	180 hp 134 kW
0-100 km/h	8.1 s
Top speed Unrestricted 220 km/h137 mph Restricted 210 km/h130 mph

Doors/seats	5 doors 5 seats
Trunk	600 L 21.2 cu ft
Length	4,427 mm 174.3 in
Height	1,545 mm 60.8 in

Detailed score breakdown

Vehicle

BMW4 Series Coupe (G22)420i

FiatFastback1.3 T270

Power

184 hp

137 kW

180 hp

134 kW

Torque

300 Nm

221 lb-ft

270 Nm

199 lb-ft

Acceleration

7.5 s

8.1 s

Top speed

240 km/h

149 mph

Unrestricted

220 km/h137 mph

Restricted

210 km/h130 mph

Lightness

1,525 kg

3,362 lb

1,304 kg

2,875 lb

Fuel consumption

5.8 L/100 km

40.6 mpg US

48.7 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	600 L 21.2 cu ft
Length	4,427 mm 174.3 in
Height	1,545 mm 60.8 in

Range score

1,017 km

632 mi

Trunk score

440 L

15.5 cu ft

600 L

21.2 cu ft

Power-to-weight score

121 hp/t

90 kW/t

8.3 kg/hp

138 hp/t

103 kW/t

7.2 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
Consumption	5.8 L/100 km40.6 mpg US48.7 mpg UK
Cost / 100 km	10.15 LC100 km
Cost / 100 mi	16.33 LC100 mi
Annual fuel used	870 L230 US gal191 UK gal
Annual fuel cost	1,523 LC/year