Car comparison

BMW 6 Series Convertible (E64) · Facelift 2007 630ivsAlfa Romeo Spider (939) 3.2 V6

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

New comparison

BMW 6 Series Convertible (E64) · Facelift 2007

630i

272 hp2996 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2007-2010

Alfa Romeo Spider (939)

3.2 V6

260 hp3195 ccGasolineAWDAutomaticNaturally aspiratedCabriolet / convertible2006-2010

Comparison overview

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

BMW 6 Series Convertible (E64) Facelift 2007 630i

Quickest 0-100 km/h
6.7 s
Fastest top speed
260 km/h
162 mph Unrestricted
250 km/h
155 mph Restricted
Most powerful
272 hp
203 kW
Lightest
1,740 kg
3,836 lb
Best power-to-weight
156 hp/t
117 kW/t
6.4 kg/hp
Lowest combined fuel consumption
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
Best estimated range
843 km
524 mi
Largest trunk
300 L
Best overall score
54/100
Best performance score
58/100
Best economy score
85/100
Best practicality score
45/100

Alfa Romeo Spider (939) 3.2 V6

Highest torque
322 Nm
237 lb-ft

Specification comparison

Specification comparison
Model	BMW6 Series Convertible (E64)Facelift 2007630i	Alfa RomeoSpider (939)3.2 V6
Power	272hp203kW	260hp194kW
Torque	320Nm236lb-ft	322Nm237lb-ft
Curb weight	1,740kg3,836lb	1,765kg3,891lb
Gross weight	2,140kg4,718lb	-
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated	240 km/h 149 mph
To 99% top speed	98.6s99% target: 257 km/h / 160 mph Calculated	99.7s99% target: 238 km/h / 148 mph Calculated
0-100 km/h	6.7s	7.0s
0-200 km/h	25.1s Calculated	31.0s Calculated
0-60 mph	6.4s Calculated	6.6s Calculated
Fuel consumption	8.3L/100 km28.3mpg US34.0mpg UK	12.2L/100 km19.3mpg US23.2mpg UK
Fuel consumption city	11.8L/100 km19.9mpg US23.9mpg UK	-
Fuel consumption highway	6.3L/100 km37.3mpg US44.8mpg UK	-
Quarter mile	14.7s Calculated	15.0s Calculated
Power-to-weight	156hp/t117kW/t71hp/1000 lb Calculated	147hp/t110kW/t67hp/1000 lb Calculated
Torque-to-weight	184Nm/t123lb-ft/ton Calculated	182Nm/t122lb-ft/ton Calculated
Estimated range	843km524mi Calculated	574km357mi Calculated
Displacement	2,996cc183cu in	3,195cc195cu in
Length	4,820mm190in	4,393mm173in
Width	1,855mm73in	1,830mm72in
Height	1,373mm54in	1,318mm52in
Wheelbase	2,780mm109in	2,528mm100in
Front track	1,558mm61in	1,579mm62in
Rear track	1,596mm63in	1,559mm61in
Trunk volume	300L	253L
Max trunk volume	350L	-
Doors	2	2
Seats	4	4
Fuel tank	70L	70L

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 6 Series Convertible (E64) Facelift 2007 630iAlfa Romeo Spider (939) 3.2 V6PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW6 Series Convertible (E64)Facelift 2007630i	6,700 rpm	2,750-3,000 rpm	6,950 rpm
Alfa RomeoSpider (939)3.2 V6	6,200 rpm	4,500 rpm	6,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW6 Series Convertible (E64)Facelift 2007630i	Alfa RomeoSpider (939)3.2 V6
	Acceleration checkpoints
0-60 mph 0-97 km/h	6.4 s	6.6 s
0-100 km/h 0-62 mph	6.7 s	7.0 s
0-200 km/h 0-124 mph	25.1 s	31.0 s
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Limited	240 km/h 149 mph
	Drag race simulation
60 ft 18 m	2.4 s	2.4 s
330 ft 101 m	6.4 s	6.4 s
1/8 mile 201 m	9.6 s	9.7 s
1000 ft 305 m	12.4 s	12.6 s
1/4 mile 402 m	14.7 s	15.0 s
Trap speed 1/4 mile 402 m	158 km/h 98 mph	152 km/h 94 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW6 Series Convertible (E64)Facelift 2007630i	272 hp 203 kW
Alfa RomeoSpider (939)3.2 V6	260 hp 194 kW

BMW 6 Series Convertible (E64) Facelift 2007 630i has 12 hp more than Alfa Romeo Spider (939) 3.2 V6.

The biggest power difference is between Alfa Romeo Spider (939) 3.2 V6 and BMW 6 Series Convertible (E64) Facelift 2007 630i: 12 hp (9 kW).

Torque comparison

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

Chart data table
Vehicle	Value
BMW6 Series Convertible (E64)Facelift 2007630i	320 Nm 236 lb-ft
Alfa RomeoSpider (939)3.2 V6	322 Nm 237 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMW6 Series Convertible (E64)Facelift 2007630i	1,740 kg 3,836 lb
Alfa RomeoSpider (939)3.2 V6	1,765 kg 3,891 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
BMW6 Series Convertible (E64)Facelift 2007630i	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
Alfa RomeoSpider (939)3.2 V6	240 km/h 149 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
BMW6 Series Convertible (E64)Facelift 2007630i	6.7 s
Alfa RomeoSpider (939)3.2 V6	7.0 s

The biggest 0-100 km/h difference is between BMW 6 Series Convertible (E64) Facelift 2007 630i and Alfa Romeo Spider (939) 3.2 V6: 0.3 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
BMW6 Series Convertible (E64)Facelift 2007630i	8.3 L/100 km 28.3 mpg US 34.0 mpg UK
Alfa RomeoSpider (939)3.2 V6	12.2 L/100 km 19.3 mpg US 23.2 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Convertible (E64) Facelift 2007 630i and Alfa Romeo Spider (939) 3.2 V6: 3.9 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
BMW6 Series Convertible (E64)Facelift 2007630i	156 hp/t 117 kW/t 6.4 kg/hp
Alfa RomeoSpider (939)3.2 V6	147 hp/t 110 kW/t 6.8 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW6 Series Convertible (E64)Facelift 2007630i	843 km 524 mi
Alfa RomeoSpider (939)3.2 V6	574 km 357 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW6 Series Convertible (E64)Facelift 2007630i	272 hp 203 kW	6.7 s	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
Alfa RomeoSpider (939)3.2 V6	260 hp 194 kW	7.0 s	240 km/h 149 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

BMW6 Series Convertible (E64)Facelift 2007630i

Power	272 hp 203 kW
0-100 km/h	6.7 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	2 doors 4 seats
Trunk	300 L 10.6 cu ft
Length	4,820 mm 189.8 in
Height	1,373 mm 54.1 in

Alfa RomeoSpider (939)3.2 V6

Power	260 hp 194 kW
0-100 km/h	7.0 s
Top speed 240 km/h 149 mph

Doors/seats	2 doors 4 seats
Trunk	253 L 8.9 cu ft
Length	4,393 mm 173.0 in
Height	1,318 mm 51.9 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

BMW6 Series Convertible (E64)Facelift 2007630i

Power	272 hp 203 kW
0-100 km/h	6.7 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

8.3 L/100 km

28.3 mpg US

34.0 mpg UK

Alfa RomeoSpider (939)3.2 V6

Power	260 hp 194 kW
0-100 km/h	7.0 s
Top speed 240 km/h 149 mph

12.2 L/100 km

19.3 mpg US

23.2 mpg UK

BMW 6 Series Convertible (E64) Facelift 2007 630i 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
BMW6 Series Convertible (E64)Facelift 2007630i	8.3 L/100 km 28.3 mpg US 34.0 mpg UK	6.7 s
Alfa RomeoSpider (939)3.2 V6	12.2 L/100 km 19.3 mpg US 23.2 mpg UK	7.0 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
BMW6 Series Convertible (E64)Facelift 2007630i	156 hp/t 117 kW/t 6.4 kg/hp	8.3 L/100 km 28.3 mpg US 34.0 mpg UK
Alfa RomeoSpider (939)3.2 V6	147 hp/t 110 kW/t 6.8 kg/hp	12.2 L/100 km 19.3 mpg US 23.2 mpg UK

Detailed score breakdown

Vehicle

BMW6 Series Convertible (E64)Facelift 2007630i

Alfa RomeoSpider (939)3.2 V6

Power

272 hp

203 kW

260 hp

194 kW

Torque

320 Nm

236 lb-ft

322 Nm

237 lb-ft

Acceleration

6.7 s

7.0 s

Top speed

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

240 km/h

149 mph

Lightness

1,740 kg

3,836 lb

1,765 kg

3,891 lb

Fuel consumption

8.3 L/100 km

28.3 mpg US

34.0 mpg UK

12.2 L/100 km

19.3 mpg US

23.2 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	300 L 10.6 cu ft
Length	4,820 mm 189.8 in
Height	1,373 mm 54.1 in

Doors/seats	2 doors 4 seats
Trunk	253 L 8.9 cu ft
Length	4,393 mm 173.0 in
Height	1,318 mm 51.9 in

Range score

843 km

524 mi

574 km

357 mi

Trunk score

300 L

10.6 cu ft

253 L

8.9 cu ft

Power-to-weight score

156 hp/t

117 kW/t

6.4 kg/hp

147 hp/t

110 kW/t

6.8 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 6 Series Convertible (E64) Facelift 2007 630i	Alfa Romeo Spider (939) 3.2 V6
Consumption	8.3 L/100 km28.3 mpg US34 mpg UK	12.2 L/100 km19.3 mpg US23.2 mpg UK
Cost / 100 km	14.53 LC100 km	21.35 LC100 km
Cost / 100 mi	23.38 LC100 mi	34.36 LC100 mi
Annual fuel used	1,245 L329 US gal274 UK gal	1,830 L483 US gal403 UK gal
Annual fuel cost	2,179 LC/year	3,203 LC/year