Car comparison

Aston Martin V8 Vantage Roadster · Facelift 2008 S 4.7 V8vsAlfa Romeo 8C Spider 4.7 V8

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

New comparison

Aston Martin V8 Vantage Roadster · Facelift 2008

S 4.7 V8

436 hp4735 ccGasolineRWDManualNaturally aspiratedRoadster2011-2016

Alfa Romeo 8C Spider

4.7 V8

450 hp4691 ccGasolineRWDManualNaturally aspiratedRoadster2008-2010

Comparison overview

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

Alfa Romeo 8C Spider 4.7 V8

Quickest 0-100 km/h
4.4 s
Most powerful
450 hp
336 kW
Lightest
1,675 kg
3,693 lb
Best power-to-weight
269 hp/t
200 kW/t
3.7 kg/hp
Best overall score
65/100
Best performance score
80/100
Best practicality score
32/100

Aston Martin V8 Vantage Roadster Facelift 2008 S 4.7 V8

Fastest top speed
305 km/h
190 mph
Highest torque
490 Nm
361 lb-ft
Lowest combined fuel consumption
13.8 L/100 km
17.0 mpg US
20.5 mpg UK
Lowest CO2 emissions
321 g/km
Best estimated range
580 km
360 mi
Best economy score
70/100

Specification comparison

Specification comparison
Model	Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	Alfa Romeo8C Spider4.7 V8
Power	436hp325kW	450hp336kW
Torque	490Nm361lb-ft	480Nm354lb-ft
Curb weight	1,690kg3,726lb	1,675kg3,693lb
Gross weight	-	1,855kg4,090lb
Top speed	305 km/h 190 mph	Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph Calculated
To 99% top speed	73.4s99% target: 302 km/h / 188 mph Calculated	67.0s99% target: 297 km/h / 185 mph Calculated
0-100 km/h	4.8s	4.4s
0-200 km/h	14.4s Calculated	13.5s Calculated
0-60 mph	4.6s Calculated	4.2s Calculated
Fuel consumption	13.8L/100 km17mpg US20.5mpg UK	15.8L/100 km14.9mpg US17.9mpg UK
Fuel consumption city	19.6L/100 km12mpg US14.4mpg UK	-
Fuel consumption highway	10.4L/100 km22.6mpg US27.2mpg UK	-
Quarter mile	12.7s Calculated	12.3s Calculated
Power-to-weight	258hp/t192kW/t117hp/1000 lb Calculated	269hp/t200kW/t122hp/1000 lb Calculated
Torque-to-weight	290Nm/t194lb-ft/ton Calculated	287Nm/t192lb-ft/ton Calculated
Estimated range	580km360mi Calculated	557km346mi Calculated
Displacement	4,735cc289cu in	4,691cc286cu in
Length	4,385mm173in	4,381mm172in
Width	1,865mm73in	1,892mm74in
Height	1,270mm50in	1,366mm54in
Wheelbase	2,600mm102in	2,645mm104in
Front track	1,570mm62in	1,590mm63in
Rear track	1,590mm63in	1,589mm63in
Ground clearance	-	140mm6in
Trunk volume	144L	-
Doors	2	2
Seats	2	2
Fuel tank	80L	88L
CO2 emissions	321g/km	377g/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.

Aston Martin V8 Vantage Roadster Facelift 2008 S 4.7 V8Alfa Romeo 8C Spider 4.7 V8PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	7,300 rpm	5,000 rpm	7,550 rpm
Alfa Romeo8C Spider4.7 V8	7,000 rpm	4,750 rpm	7,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	Alfa Romeo8C Spider4.7 V8
	Acceleration checkpoints
0-60 mph 0-97 km/h	4.6 s	4.2 s
0-100 km/h 0-62 mph	4.8 s	4.4 s
0-200 km/h 0-124 mph	14.4 s	13.5 s
Top speed	305 km/h 190 mph	Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph Likely limited
	Drag race simulation
60 ft 18 m	2.2 s	2.1 s
330 ft 101 m	5.7 s	5.5 s
1/8 mile 201 m	8.4 s	8.1 s
1000 ft 305 m	10.8 s	10.4 s
1/4 mile 402 m	12.7 s	12.3 s
Trap speed 1/4 mile 402 m	188 km/h 117 mph	192 km/h 119 mph

Power comparison

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

Chart data table
Vehicle	Value
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	436 hp 325 kW
Alfa Romeo8C Spider4.7 V8	450 hp 336 kW

Alfa Romeo 8C Spider 4.7 V8 has 14 hp more than Aston Martin V8 Vantage Roadster Facelift 2008 S 4.7 V8.

The biggest power difference is between Aston Martin V8 Vantage Roadster Facelift 2008 S 4.7 V8 and Alfa Romeo 8C Spider 4.7 V8: 14 hp (10 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	490 Nm 361 lb-ft
Alfa Romeo8C Spider4.7 V8	480 Nm 354 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	1,690 kg 3,726 lb
Alfa Romeo8C Spider4.7 V8	1,675 kg 3,693 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
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	305 km/h 190 mph
Alfa Romeo8C Spider4.7 V8	Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	4.8 s
Alfa Romeo8C Spider4.7 V8	4.4 s

The biggest 0-100 km/h difference is between Alfa Romeo 8C Spider 4.7 V8 and Aston Martin V8 Vantage Roadster Facelift 2008 S 4.7 V8: 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
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	13.8 L/100 km 17.0 mpg US 20.5 mpg UK
Alfa Romeo8C Spider4.7 V8	15.8 L/100 km 14.9 mpg US 17.9 mpg UK

The biggest fuel consumption difference is between Aston Martin V8 Vantage Roadster Facelift 2008 S 4.7 V8 and Alfa Romeo 8C Spider 4.7 V8: 2.0 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
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	258 hp/t 192 kW/t 3.9 kg/hp
Alfa Romeo8C Spider4.7 V8	269 hp/t 200 kW/t 3.7 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	580 km 360 mi
Alfa Romeo8C Spider4.7 V8	557 km 346 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	436 hp 325 kW	4.8 s	305 km/h 190 mph
Alfa Romeo8C Spider4.7 V8	450 hp 336 kW	4.4 s	Unrestricted 300 km/h186 mph Restricted 290 km/h180 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

Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8

Power	436 hp 325 kW
0-100 km/h	4.8 s
Top speed 305 km/h 190 mph

Doors/seats	2 doors 2 seats
Trunk	144 L 5.1 cu ft
Length	4,385 mm 172.6 in
Height	1,270 mm 50.0 in

Alfa Romeo8C Spider4.7 V8

Power	450 hp 336 kW
0-100 km/h	4.4 s
Top speed Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph

Doors/seats	2 doors 2 seats
Trunk	-
Length	4,381 mm 172.5 in
Height	1,366 mm 53.8 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

Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8

Power	436 hp 325 kW
0-100 km/h	4.8 s
Top speed 305 km/h 190 mph

13.8 L/100 km

17.0 mpg US

20.5 mpg UK

Alfa Romeo8C Spider4.7 V8

Power	450 hp 336 kW
0-100 km/h	4.4 s
Top speed Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph

15.8 L/100 km

14.9 mpg US

17.9 mpg UK

Aston Martin V8 Vantage Roadster Facelift 2008 S 4.7 V8 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
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	13.8 L/100 km 17.0 mpg US 20.5 mpg UK	4.8 s
Alfa Romeo8C Spider4.7 V8	15.8 L/100 km 14.9 mpg US 17.9 mpg UK	4.4 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
Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8	258 hp/t 192 kW/t 3.9 kg/hp	13.8 L/100 km 17.0 mpg US 20.5 mpg UK
Alfa Romeo8C Spider4.7 V8	269 hp/t 200 kW/t 3.7 kg/hp	15.8 L/100 km 14.9 mpg US 17.9 mpg UK

Detailed score breakdown

Vehicle

Aston MartinV8 Vantage RoadsterFacelift 2008S 4.7 V8

Alfa Romeo8C Spider4.7 V8

Power

436 hp

325 kW

450 hp

336 kW

Torque

490 Nm

361 lb-ft

480 Nm

354 lb-ft

Acceleration

4.8 s

4.4 s

Top speed

305 km/h

190 mph

Unrestricted

300 km/h186 mph

Restricted

290 km/h180 mph

Lightness

1,690 kg

3,726 lb

1,675 kg

3,693 lb

Fuel consumption

13.8 L/100 km

17.0 mpg US

20.5 mpg UK

15.8 L/100 km

14.9 mpg US

17.9 mpg UK

Practicality

Doors/seats	2 doors 2 seats
Trunk	144 L 5.1 cu ft
Length	4,385 mm 172.6 in
Height	1,270 mm 50.0 in

Doors/seats	2 doors 2 seats
Trunk	-
Length	4,381 mm 172.5 in
Height	1,366 mm 53.8 in

Range score

580 km

360 mi

557 km

346 mi

CO2 score

321 g/km

377 g/km

Trunk score

144 L

5.1 cu ft

Power-to-weight score

258 hp/t

192 kW/t

3.9 kg/hp

269 hp/t

200 kW/t

3.7 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	Aston Martin V8 Vantage Roadster Facelift 2008 S 4.7 V8	Alfa Romeo 8C Spider 4.7 V8
Consumption	13.8 L/100 km17 mpg US20.5 mpg UK	15.8 L/100 km14.9 mpg US17.9 mpg UK
Cost / 100 km	24.15 LC100 km	27.65 LC100 km
Cost / 100 mi	38.87 LC100 mi	44.50 LC100 mi
Annual fuel used	2,070 L547 US gal455 UK gal	2,370 L626 US gal521 UK gal
Annual fuel cost	3,623 LC/year	4,148 LC/year