Car comparison

Alfa Romeo 147 GTA 3.2 V6vsOpel Signum · Facelift 2005 2.8i V6 24V Turbo

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

New comparison

Alfa Romeo 147 GTA

3.2 V6

250 hp3179 ccGasolineFWDManualNaturally aspiratedHatchback2003-2006

Opel Signum · Facelift 2005

2.8i V6 24V Turbo

230 hp2792 ccGasolineFWDManualTurbochargedHatchback2005-2006

Comparison overview

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

Alfa Romeo 147 GTA 3.2 V6

Quickest 0-100 km/h
6.3 s
Fastest top speed
246 km/h
153 mph
Most powerful
250 hp
186 kW
Lightest
1,360 kg
2,998 lb
Best power-to-weight
184 hp/t
137 kW/t
5.4 kg/hp
Best overall score
60/100
Best performance score
58/100
Best economy score
74/100

Opel Signum Facelift 2005 2.8i V6 24V Turbo

Highest torque
330 Nm
243 lb-ft
Lowest city consumption
15.7 L/100 km
15.0 mpg US
18.0 mpg UK
Lowest highway consumption
7.6 L/100 km
30.9 mpg US
37.2 mpg UK
Largest trunk
365 L
Best practicality score
74/100

Specification comparison

Specification comparison
Model	Alfa Romeo147 GTA3.2 V6	OpelSignumFacelift 20052.8i V6 24V Turbo
Power	250hp186kW	230hp172kW
Torque	300Nm221lb-ft	330Nm243lb-ft
Curb weight	1,360kg2,998lb	1,580kg3,483lb
Gross weight	1,880kg4,145lb	2,175kg4,795lb
Top speed	246 km/h 153 mph	243 km/h 151 mph
To 99% top speed	71.5s99% target: 244 km/h / 151 mph Calculated	94.6s99% target: 241 km/h / 149 mph Calculated
0-100 km/h	6.3s	7.6s
0-200 km/h	23.2s Calculated	30.2s Calculated
0-60 mph	6.0s Calculated	7.2s Calculated
Fuel consumption	12.1L/100 km19.4mpg US23.3mpg UK	-
Fuel consumption city	18.1L/100 km13mpg US15.6mpg UK	15.7L/100 km15mpg US18.0mpg UK
Fuel consumption highway	8.6L/100 km27.4mpg US32.8mpg UK	7.6L/100 km30.9mpg US37.2mpg UK
Quarter mile	14.4s Calculated	15.5s Calculated
Power-to-weight	184hp/t137kW/t83hp/1000 lb Calculated	146hp/t109kW/t66hp/1000 lb Calculated
Torque-to-weight	221Nm/t148lb-ft/ton Calculated	209Nm/t140lb-ft/ton Calculated
Estimated range	521km324mi Calculated	-
Displacement	3,179cc194cu in	2,792cc170cu in
Length	4,213mm166in	4,651mm183in
Width	1,764mm69in	1,798mm71in
Height	1,412mm56in	1,466mm58in
Wheelbase	2,546mm100in	2,830mm111in
Front track	1,516mm60in	1,536mm60in
Rear track	1,504mm59in	1,525mm60in
Trunk volume	280L	365L
Max trunk volume	1,030L	1,410L
Doors	3	5
Seats	5	5
Fuel tank	63L	60L
CO2 emissions	287g/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.

Alfa Romeo 147 GTA 3.2 V6Opel Signum Facelift 2005 2.8i V6 24V TurboPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Alfa Romeo147 GTA3.2 V6	6,200 rpm	4,800 rpm	6,450 rpm
OpelSignumFacelift 20052.8i V6 24V Turbo	5,500 rpm	-	5,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Alfa Romeo147 GTA3.2 V6	OpelSignumFacelift 20052.8i V6 24V Turbo
	Acceleration checkpoints
0-60 mph 0-97 km/h	6.0 s	7.2 s
0-100 km/h 0-62 mph	6.3 s	7.6 s
0-200 km/h 0-124 mph	23.2 s	30.2 s
Top speed	246 km/h 153 mph	243 km/h 151 mph
	Drag race simulation
60 ft 18 m	2.4 s	2.6 s
330 ft 101 m	6.3 s	6.8 s
1/8 mile 201 m	9.4 s	10.1 s
1000 ft 305 m	12.1 s	13.0 s
1/4 mile 402 m	14.4 s	15.5 s
Trap speed 1/4 mile 402 m	163 km/h 102 mph	151 km/h 94 mph

Power comparison

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

Chart data table
Vehicle	Value
Alfa Romeo147 GTA3.2 V6	250 hp 186 kW
OpelSignumFacelift 20052.8i V6 24V Turbo	230 hp 172 kW

Alfa Romeo 147 GTA 3.2 V6 has 20 hp more than Opel Signum Facelift 2005 2.8i V6 24V Turbo.

The biggest power difference is between Opel Signum Facelift 2005 2.8i V6 24V Turbo and Alfa Romeo 147 GTA 3.2 V6: 20 hp (15 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Alfa Romeo147 GTA3.2 V6	300 Nm 221 lb-ft
OpelSignumFacelift 20052.8i V6 24V Turbo	330 Nm 243 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
Alfa Romeo147 GTA3.2 V6	1,360 kg 2,998 lb
OpelSignumFacelift 20052.8i V6 24V Turbo	1,580 kg 3,483 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
Alfa Romeo147 GTA3.2 V6	246 km/h 153 mph
OpelSignumFacelift 20052.8i V6 24V Turbo	243 km/h 151 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
Alfa Romeo147 GTA3.2 V6	6.3 s
OpelSignumFacelift 20052.8i V6 24V Turbo	7.6 s

The biggest 0-100 km/h difference is between Alfa Romeo 147 GTA 3.2 V6 and Opel Signum Facelift 2005 2.8i V6 24V Turbo: 1.3 s.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
Alfa Romeo147 GTA3.2 V6	184 hp/t 137 kW/t 5.4 kg/hp
OpelSignumFacelift 20052.8i V6 24V Turbo	146 hp/t 109 kW/t 6.9 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
Alfa Romeo147 GTA3.2 V6	250 hp 186 kW	6.3 s	246 km/h 153 mph
OpelSignumFacelift 20052.8i V6 24V Turbo	230 hp 172 kW	7.6 s	243 km/h 151 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

Alfa Romeo147 GTA3.2 V6

Power	250 hp 186 kW
0-100 km/h	6.3 s
Top speed 246 km/h 153 mph

Doors/seats	3 doors 5 seats
Trunk	280 L 9.9 cu ft
Length	4,213 mm 165.9 in
Height	1,412 mm 55.6 in

OpelSignumFacelift 20052.8i V6 24V Turbo

Power	230 hp 172 kW
0-100 km/h	7.6 s
Top speed 243 km/h 151 mph

Doors/seats	5 doors 5 seats
Trunk	365 L 12.9 cu ft
Length	4,651 mm 183.1 in
Height	1,466 mm 57.7 in

Detailed score breakdown

Vehicle

Alfa Romeo147 GTA3.2 V6

OpelSignumFacelift 20052.8i V6 24V Turbo

Power

250 hp

186 kW

230 hp

172 kW

Torque

300 Nm

221 lb-ft

330 Nm

243 lb-ft

Acceleration

6.3 s

7.6 s

Top speed

246 km/h

153 mph

243 km/h

151 mph

Lightness

1,360 kg

2,998 lb

1,580 kg

3,483 lb

Fuel consumption

12.1 L/100 km

19.4 mpg US

23.3 mpg UK

Practicality

Doors/seats	3 doors 5 seats
Trunk	280 L 9.9 cu ft
Length	4,213 mm 165.9 in
Height	1,412 mm 55.6 in

Doors/seats	5 doors 5 seats
Trunk	365 L 12.9 cu ft
Length	4,651 mm 183.1 in
Height	1,466 mm 57.7 in

Range score

521 km

324 mi

CO2 score

287 g/km

Trunk score

280 L

9.9 cu ft

365 L

12.9 cu ft

Power-to-weight score

184 hp/t

137 kW/t

5.4 kg/hp

146 hp/t

109 kW/t

6.9 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	Alfa Romeo 147 GTA 3.2 V6
Consumption	12.1 L/100 km19.4 mpg US23.3 mpg UK
Cost / 100 km	21.18 LC100 km
Cost / 100 mi	34.08 LC100 mi
Annual fuel used	1,815 L479 US gal399 UK gal
Annual fuel cost	3,176 LC/year