Car comparison

Volvo C70 Convertible 2.3 20V T5vsAlfa Romeo Spider (939) 3.2 V6

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

New comparison

Volvo C70 Convertible

2.3 20V T5

239 hp2319 ccGasolineFWDAutomaticTurbochargedCabriolet / convertible1997-2005
VS

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.

Best choices

Volvo C70 Convertible 2.3 20V T5

  • Fastest top speed
    250 km/h
    155 mph Unrestricted
    240 km/h
    149 mph Restricted
  • Highest torque
    330 Nm
    243 lb-ft
  • Lightest
    1,620 kg
    3,571 lb
  • Best power-to-weight
    148 hp/t
    110 kW/t
    6.8 kg/hp
  • Lowest combined fuel consumption
    11.7 L/100 km
    20.1 mpg US
    24.1 mpg UK
  • Best estimated range
    598 km
    372 mi
  • Largest trunk
    260 L
  • Best overall score
    51/100
  • Best performance score
    55/100
  • Best economy score
    75/100
  • Best practicality score
    44/100

Specification comparison

Specification comparison
ModelVolvoC70 Convertible2.3 20V T5Alfa RomeoSpider (939)3.2 V6
Power
239hp178kW
260hp194kW
Torque
330Nm243lb-ft
322Nm237lb-ft
Curb weight
1,620kg3,571lb
1,765kg3,891lb
Gross weight
2,070kg4,564lb
-
Top speed
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Calculated
240 km/h
149 mph
To 99% top speed
102.1s99% target: 248 km/h / 154 mph
Calculated
99.7s99% target: 238 km/h / 148 mph
Calculated
0-100 km/h
7.2s
7.0s
0-200 km/h
28.7s
Calculated
31.0s
Calculated
0-60 mph
6.8s
Calculated
6.6s
Calculated
Fuel consumption
11.7L/100 km20.1mpg US24.1mpg UK
12.2L/100 km19.3mpg US23.2mpg UK
Fuel consumption city
17.1L/100 km13.8mpg US16.5mpg UK
-
Fuel consumption highway
8.7L/100 km27mpg US32.5mpg UK
-
Quarter mile
15.1s
Calculated
15.0s
Calculated
Power-to-weight
148hp/t110kW/t67hp/1000 lb
Calculated
147hp/t110kW/t67hp/1000 lb
Calculated
Torque-to-weight
204Nm/t136lb-ft/ton
Calculated
182Nm/t122lb-ft/ton
Calculated
Estimated range
598km372mi
Calculated
574km357mi
Calculated
Displacement
2,319cc142cu in
3,195cc195cu in
Length
4,720mm186in
4,393mm173in
Width
1,820mm72in
1,830mm72in
Height
1,410mm56in
1,318mm52in
Wheelbase
2,660mm105in
2,528mm100in
Front track
1,520mm60in
1,579mm62in
Rear track
1,520mm60in
1,559mm61in
Trunk volume
260L
253L
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.

Volvo C70 Convertible 2.3 20V T5Alfa Romeo Spider (939) 3.2 V6PowerTorque
  • Volvo C70 Convertible 2.3 20V T5: Power / Torque
  • Alfa Romeo Spider (939) 3.2 V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
VolvoC70 Convertible2.3 20V T55,100 rpm2,700 rpm5,350 rpm
Alfa RomeoSpider (939)3.2 V66,200 rpm4,500 rpm6,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricVolvoC70 Convertible2.3 20V T5Alfa RomeoSpider (939)3.2 V6
Acceleration checkpoints
0-60 mph
0-97 km/h
6.8 s
6.6 s
0-100 km/h
0-62 mph
7.2 s
7.0 s
0-200 km/h
0-124 mph
28.7 s
31.0 s
Top speed
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Likely limited
240 km/h
149 mph
Drag race simulation
60 ft
18 m
2.5 s
2.4 s
330 ft
101 m
6.6 s
6.4 s
1/8 mile
201 m
9.9 s
9.7 s
1000 ft
305 m
12.7 s
12.6 s
1/4 mile
402 m
15.1 s
15.0 s
Trap speed
1/4 mile
402 m
153 km/h
95 mph
152 km/h
94 mph

Power comparison

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

Chart data table
VehicleValue
VolvoC70 Convertible2.3 20V T5
239 hp
178 kW
Alfa RomeoSpider (939)3.2 V6
260 hp
194 kW

Alfa Romeo Spider (939) 3.2 V6 has 21 hp more than Volvo C70 Convertible 2.3 20V T5.

The biggest power difference is between Volvo C70 Convertible 2.3 20V T5 and Alfa Romeo Spider (939) 3.2 V6: 21 hp (16 kW).

Torque comparison

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

Chart data table
VehicleValue
VolvoC70 Convertible2.3 20V T5
330 Nm
243 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
VehicleValue
VolvoC70 Convertible2.3 20V T5
1,620 kg
3,571 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
VehicleValue
VolvoC70 Convertible2.3 20V T5
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 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
VehicleValue
VolvoC70 Convertible2.3 20V T57.2 s
Alfa RomeoSpider (939)3.2 V67.0 s

The biggest 0-100 km/h difference is between Alfa Romeo Spider (939) 3.2 V6 and Volvo C70 Convertible 2.3 20V T5: 0.2 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
VolvoC70 Convertible2.3 20V T5
11.7 L/100 km
20.1 mpg US
24.1 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 Volvo C70 Convertible 2.3 20V T5 and Alfa Romeo Spider (939) 3.2 V6: 0.5 L/100 km.

Power-to-weight comparison

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

Chart data table
VehicleValue
VolvoC70 Convertible2.3 20V T5
148 hp/t
110 kW/t
6.8 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
VehicleValue
VolvoC70 Convertible2.3 20V T5
598 km
372 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
VehiclePowerAccelerationTop speed
VolvoC70 Convertible2.3 20V T5
239 hp
178 kW
7.2 s
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 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.

Chart data table
VehiclePerformance scorePracticality score
VolvoC70 Convertible2.3 20V T5
Power
239 hp
178 kW
0-100 km/h7.2 s
Top speed
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Doors/seats
2 doors
4 seats
Trunk
260 L
9.2 cu ft
Length
4,720 mm
185.8 in
Height
1,410 mm
55.5 in
Alfa RomeoSpider (939)3.2 V6
Power
260 hp
194 kW
0-100 km/h7.0 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.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
VolvoC70 Convertible2.3 20V T5
Power
239 hp
178 kW
0-100 km/h7.2 s
Top speed
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Alfa RomeoSpider (939)3.2 V6
Power
260 hp
194 kW
0-100 km/h7.0 s
Top speed
240 km/h
149 mph
12.2 L/100 km
19.3 mpg US
23.2 mpg UK

Volvo C70 Convertible 2.3 20V T5 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
VehicleFuel consumption, L/100 km0-100 km/h, s
VolvoC70 Convertible2.3 20V T5
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
7.2 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
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
VolvoC70 Convertible2.3 20V T5
148 hp/t
110 kW/t
6.8 kg/hp
11.7 L/100 km
20.1 mpg US
24.1 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

Detailed score breakdown
VehicleVolvoC70 Convertible2.3 20V T5Alfa RomeoSpider (939)3.2 V6
Power
239 hp
178 kW
260 hp
194 kW
Torque
330 Nm
243 lb-ft
322 Nm
237 lb-ft
Acceleration
7.2 s
7.0 s
Top speed
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
240 km/h
149 mph
Lightness
1,620 kg
3,571 lb
1,765 kg
3,891 lb
Fuel consumption
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
12.2 L/100 km
19.3 mpg US
23.2 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
260 L
9.2 cu ft
Length
4,720 mm
185.8 in
Height
1,410 mm
55.5 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
598 km
372 mi
574 km
357 mi
Trunk score
260 L
9.2 cu ft
253 L
8.9 cu ft
Power-to-weight score
148 hp/t
110 kW/t
6.8 kg/hp
147 hp/t
110 kW/t
6.8 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

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
VehicleVolvo C70 Convertible 2.3 20V T5Alfa Romeo Spider (939) 3.2 V6
Consumption11.7 L/100 km20.1 mpg US24.1 mpg UK12.2 L/100 km19.3 mpg US23.2 mpg UK
Cost / 100 km20.47 LC100 km21.35 LC100 km
Cost / 100 mi32.95 LC100 mi34.36 LC100 mi
Annual fuel used1,755 L464 US gal386 UK gal1,830 L483 US gal403 UK gal
Annual fuel cost3,071 LC/year3,203 LC/year

Head-to-head comparisons

Volvo C70 Convertible 2.3 20V T5

  • Has 8 Nm more
  • Is 145 kg lighter
  • Has 10 km/h (6 mph) higher top speed
  • Uses 0.5 L/100 km less fuel
  • Has 0 hp/t better power-to-weight
  • Has 25 km (15 mi) more estimated range
  • Has 7 L more trunk volume

Pros

  • Highest top speed
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power

Alfa Romeo Spider (939) 3.2 V6

  • Has 21 hp more
  • Is 0.2 s quicker from 0-100 km/h

Pros

  • Quickest 0-100 km/h in this comparison
  • Most powerful

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Volvo C70 Convertible 2.3 20V T5
Alfa Romeo Spider (939) 3.2 V6
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