Car comparison

AUDI R8 Spyder (42) 5.2 FSI V10vsPorsche 911 Cabriolet (997) · Facelift 2008 Turbo 3.8

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

New comparison

AUDI R8 Spyder (42)

5.2 FSI V10

525 hp5204 ccGasolineAWDManualNaturally aspiratedCabriolet / convertible2010-2012
VS

Porsche 911 Cabriolet (997) · Facelift 2008

Turbo 3.8

500 hp3800 ccGasolineAWDManualTurbochargedCabriolet / convertible2009-2011

Comparison overview

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

Best choices

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8

  • Quickest 0-100 km/h
    3.8 s
  • Highest torque
    650 Nm
    479 lb-ft
  • Lightest
    1,645 kg
    3,627 lb
  • Lowest combined fuel consumption
    11.7 L/100 km
    20.1 mpg US
    24.1 mpg UK
  • Lowest city consumption
    16.7 L/100 km
    14.1 mpg US
    16.9 mpg UK
  • Lowest highway consumption
    8.4 L/100 km
    28.0 mpg US
    33.6 mpg UK
  • Lowest CO2 emissions
    275 g/km
  • Best estimated range
    573 km
    356 mi
  • Largest trunk
    105 L
  • Best overall score
    76/100
  • Best performance score
    89/100
  • Best economy score
    75/100
  • Best practicality score
    47/100

Specification comparison

Specification comparison
ModelAUDIR8 Spyder (42)5.2 FSI V10Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Power
525hp391kW
500hp373kW
Torque
530Nm391lb-ft
650Nm479lb-ft
Curb weight
1,720kg3,792lb
1,645kg3,627lb
Gross weight
2,020kg4,453lb
1,995kg4,398lb
Top speed
313 km/h
194 mph
312 km/h
194 mph
To 99% top speed
64.5s99% target: 310 km/h / 193 mph
Calculated
55.9s99% target: 309 km/h / 192 mph
Calculated
0-100 km/h
4.1s
3.8s
0-200 km/h
12.1s
Calculated
11.0s
Calculated
0-60 mph
3.9s
Calculated
3.6s
Calculated
Fuel consumption
14.9L/100 km15.8mpg US19.0mpg UK
11.7L/100 km20.1mpg US24.1mpg UK
Fuel consumption city
22.2L/100 km10.6mpg US12.7mpg UK
16.7L/100 km14.1mpg US16.9mpg UK
Fuel consumption highway
10.7L/100 km22mpg US26.4mpg UK
8.4L/100 km28mpg US33.6mpg UK
Quarter mile
11.9s
Calculated
11.6s
Calculated
Power-to-weight
305hp/t228kW/t138hp/1000 lb
Calculated
304hp/t227kW/t138hp/1000 lb
Calculated
Torque-to-weight
308Nm/t206lb-ft/ton
Calculated
395Nm/t264lb-ft/ton
Calculated
Estimated range
537km334mi
Calculated
573km356mi
Calculated
Displacement
5,204cc318cu in
3,800cc232cu in
Length
4,434mm175in
4,450mm175in
Width
1,904mm75in
1,852mm73in
Height
1,244mm49in
1,300mm51in
Wheelbase
2,650mm104in
2,350mm93in
Front track
1,638mm64in
-
Rear track
1,595mm63in
-
Trunk volume
100L
-
Max trunk volume-
105L
Doors
2
2
Seats
2
4
Fuel tank
80L
67L
CO2 emissions
349g/km
275g/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.

AUDI R8 Spyder (42) 5.2 FSI V10Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8PowerTorque
  • AUDI R8 Spyder (42) 5.2 FSI V10: Power / Torque
  • Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIR8 Spyder (42)5.2 FSI V108,000 rpm6,500 rpm8,250 rpm
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.86,000-6,500 rpm1,950-5,000 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIR8 Spyder (42)5.2 FSI V10Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.9 s
3.6 s
0-100 km/h
0-62 mph
4.1 s
3.8 s
0-200 km/h
0-124 mph
12.1 s
11.0 s
Top speed
313 km/h
194 mph
312 km/h
194 mph
Drag race simulation
60 ft
18 m
2.1 s
2.0 s
330 ft
101 m
5.3 s
5.2 s
1/8 mile
201 m
7.9 s
7.6 s
1000 ft
305 m
10.1 s
9.8 s
1/4 mile
402 m
11.9 s
11.6 s
Trap speed
1/4 mile
402 m
199 km/h
124 mph
206 km/h
128 mph

Power comparison

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

Chart data table
VehicleValue
AUDIR8 Spyder (42)5.2 FSI V10
525 hp
391 kW
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
500 hp
373 kW

AUDI R8 Spyder (42) 5.2 FSI V10 has 25 hp more than Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8.

The biggest power difference is between Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 and AUDI R8 Spyder (42) 5.2 FSI V10: 25 hp (19 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIR8 Spyder (42)5.2 FSI V10
530 Nm
391 lb-ft
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
650 Nm
479 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIR8 Spyder (42)5.2 FSI V10
1,720 kg
3,792 lb
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
1,645 kg
3,627 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
AUDIR8 Spyder (42)5.2 FSI V10
313 km/h
194 mph
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
312 km/h
194 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIR8 Spyder (42)5.2 FSI V104.1 s
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.83.8 s

Although AUDI R8 Spyder (42) 5.2 FSI V10 has more power, Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 and AUDI R8 Spyder (42) 5.2 FSI V10: 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
VehicleValue
AUDIR8 Spyder (42)5.2 FSI V10
14.9 L/100 km
15.8 mpg US
19.0 mpg UK
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
11.7 L/100 km
20.1 mpg US
24.1 mpg UK

The biggest fuel consumption difference is between Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 and AUDI R8 Spyder (42) 5.2 FSI V10: 3.2 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
AUDIR8 Spyder (42)5.2 FSI V10
305 hp/t
228 kW/t
3.3 kg/hp
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
304 hp/t
227 kW/t
3.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIR8 Spyder (42)5.2 FSI V10
537 km
334 mi
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
573 km
356 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIR8 Spyder (42)5.2 FSI V10
525 hp
391 kW
4.1 s
313 km/h
194 mph
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
500 hp
373 kW
3.8 s
312 km/h
194 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
AUDIR8 Spyder (42)5.2 FSI V10
Power
525 hp
391 kW
0-100 km/h4.1 s
Top speed
313 km/h
194 mph
Doors/seats
2 doors
2 seats
Trunk
100 L
3.5 cu ft
Length
4,434 mm
174.6 in
Height
1,244 mm
49.0 in
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Power
500 hp
373 kW
0-100 km/h3.8 s
Top speed
312 km/h
194 mph
Doors/seats
2 doors
4 seats
Trunk
105 L
3.7 cu ft
Length
4,450 mm
175.2 in
Height
1,300 mm
51.2 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
AUDIR8 Spyder (42)5.2 FSI V10
Power
525 hp
391 kW
0-100 km/h4.1 s
Top speed
313 km/h
194 mph
14.9 L/100 km
15.8 mpg US
19.0 mpg UK
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Power
500 hp
373 kW
0-100 km/h3.8 s
Top speed
312 km/h
194 mph
11.7 L/100 km
20.1 mpg US
24.1 mpg UK

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8 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
AUDIR8 Spyder (42)5.2 FSI V10
14.9 L/100 km
15.8 mpg US
19.0 mpg UK
4.1 s
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
3.8 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
AUDIR8 Spyder (42)5.2 FSI V10
305 hp/t
228 kW/t
3.3 kg/hp
14.9 L/100 km
15.8 mpg US
19.0 mpg UK
Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
304 hp/t
227 kW/t
3.3 kg/hp
11.7 L/100 km
20.1 mpg US
24.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIR8 Spyder (42)5.2 FSI V10Porsche911 Cabriolet (997)Facelift 2008Turbo 3.8
Power
525 hp
391 kW
500 hp
373 kW
Torque
530 Nm
391 lb-ft
650 Nm
479 lb-ft
Acceleration
4.1 s
3.8 s
Top speed
313 km/h
194 mph
312 km/h
194 mph
Lightness
1,720 kg
3,792 lb
1,645 kg
3,627 lb
Fuel consumption
14.9 L/100 km
15.8 mpg US
19.0 mpg UK
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
100 L
3.5 cu ft
Length
4,434 mm
174.6 in
Height
1,244 mm
49.0 in
Doors/seats
2 doors
4 seats
Trunk
105 L
3.7 cu ft
Length
4,450 mm
175.2 in
Height
1,300 mm
51.2 in
Range score
537 km
334 mi
573 km
356 mi
CO2 score
349 g/km
275 g/km
Trunk score
100 L
3.5 cu ft
105 L
3.7 cu ft
Power-to-weight score
305 hp/t
228 kW/t
3.3 kg/hp
304 hp/t
227 kW/t
3.3 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
VehicleAUDI R8 Spyder (42) 5.2 FSI V10Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8
Consumption14.9 L/100 km15.8 mpg US19 mpg UK11.7 L/100 km20.1 mpg US24.1 mpg UK
Cost / 100 km26.08 LC100 km20.47 LC100 km
Cost / 100 mi41.96 LC100 mi32.95 LC100 mi
Annual fuel used2,235 L590 US gal492 UK gal1,755 L464 US gal386 UK gal
Annual fuel cost3,911 LC/year3,071 LC/year

Head-to-head comparisons

AUDI R8 Spyder (42) 5.2 FSI V10

  • Has 25 hp more
  • Has 1 km/h (1 mph) higher top speed
  • Has 1 hp/t better power-to-weight

Pros

  • Highest top speed
  • Most powerful
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk
  • Highest CO2 emissions

Porsche 911 Cabriolet (997) Facelift 2008 Turbo 3.8

  • Has 120 Nm more
  • Is 75 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Uses 3.2 L/100 km less fuel
  • Has 36 km (22 mi) more estimated range
  • Has 5 L more trunk volume
  • Emits 74 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI R8 Spyder (42) 5.2 FSI V10
Porsche 911 Cabriolet (997) Turbo 3.8
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2 vehicles selected

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