Car comparison

Porsche 911 Cabriolet (991) Turbo 3.8vsAUDI R8 Spyder (42) 5.2 FSI V10

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

New comparison

Porsche 911 Cabriolet (991)

Turbo 3.8

520 hp3800 ccGasolineAWDDual-clutchTwin-turboCabriolet / convertible2013-2016
VS

AUDI R8 Spyder (42)

5.2 FSI V10

525 hp5204 ccGasolineAWDAutomaticNaturally aspiratedCabriolet / convertible2010-2012

Comparison overview

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

Best choices

Porsche 911 Cabriolet (991) Turbo 3.8

  • Quickest 0-100 km/h
    3.5 s
  • Fastest top speed
    315 km/h
    196 mph
  • Highest torque
    660 Nm
    487 lb-ft
  • Lightest
    1,665 kg
    3,671 lb
  • Best power-to-weight
    312 hp/t
    233 kW/t
    3.2 kg/hp
  • Lowest combined fuel consumption
    9.9 L/100 km
    23.8 mpg US
    28.5 mpg UK
  • Lowest city consumption
    13.4 L/100 km
    17.6 mpg US
    21.1 mpg UK
  • Lowest highway consumption
    7.8 L/100 km
    30.2 mpg US
    36.2 mpg UK
  • Lowest CO2 emissions
    231 g/km
  • Best estimated range
    687 km
    427 mi
  • Largest trunk
    275 L
  • Best overall score
    76/100
  • Best performance score
    91/100
  • Best economy score
    80/100
  • Best practicality score
    43/100

Specification comparison

Specification comparison
ModelPorsche911 Cabriolet (991)Turbo 3.8AUDIR8 Spyder (42)5.2 FSI V10
Power
520hp388kW
525hp391kW
Torque
660Nm487lb-ft
530Nm391lb-ft
Curb weight
1,665kg3,671lb
1,725kg3,803lb
Gross weight
2,045kg4,508lb
2,025kg4,464lb
Top speed
315 km/h
196 mph
313 km/h
194 mph
To 99% top speed
51.1s99% target: 312 km/h / 194 mph
Calculated
64.6s99% target: 310 km/h / 193 mph
Calculated
0-100 km/h
3.5s
4.1s
0-200 km/h
10.0s
Calculated
12.1s
Calculated
0-60 mph
3.3s
Calculated
3.9s
Calculated
Fuel consumption
9.9L/100 km23.8mpg US28.5mpg UK
14.2L/100 km16.6mpg US19.9mpg UK
Fuel consumption city
13.4L/100 km17.6mpg US21.1mpg UK
21.5L/100 km10.9mpg US13.1mpg UK
Fuel consumption highway
7.8L/100 km30.2mpg US36.2mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
Quarter mile
11.2s
Calculated
11.9s
Calculated
Power-to-weight
312hp/t233kW/t142hp/1000 lb
Calculated
304hp/t227kW/t138hp/1000 lb
Calculated
Torque-to-weight
396Nm/t265lb-ft/ton
Calculated
307Nm/t206lb-ft/ton
Calculated
Estimated range
687km427mi
Calculated
563km350mi
Calculated
Displacement
3,800cc232cu in
5,204cc318cu in
Length
4,506mm177in
4,434mm175in
Width
1,880mm74in
1,904mm75in
Height
1,292mm51in
1,244mm49in
Wheelbase
2,450mm96in
2,650mm104in
Front track
1,541mm61in
1,638mm64in
Rear track
1,590mm63in
1,595mm63in
Trunk volume
275L
100L
Doors
2
2
Seats
4
2
Fuel tank
68L
80L
CO2 emissions
231g/km
332g/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.

Porsche 911 Cabriolet (991) Turbo 3.8AUDI R8 Spyder (42) 5.2 FSI V10PowerTorque
  • Porsche 911 Cabriolet (991) Turbo 3.8: Power / Torque
  • AUDI R8 Spyder (42) 5.2 FSI V10: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 Cabriolet (991)Turbo 3.86,000-6,500 rpm1,950-5,000 rpm6,750 rpm
AUDIR8 Spyder (42)5.2 FSI V108,000 rpm6,500 rpm8,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 Cabriolet (991)Turbo 3.8AUDIR8 Spyder (42)5.2 FSI V10
Acceleration checkpoints
0-60 mph
0-97 km/h
3.3 s
3.9 s
0-100 km/h
0-62 mph
3.5 s
4.1 s
0-200 km/h
0-124 mph
10.0 s
12.1 s
Top speed
315 km/h
196 mph
313 km/h
194 mph
Drag race simulation
60 ft
18 m
1.9 s
2.1 s
330 ft
101 m
5.0 s
5.3 s
1/8 mile
201 m
7.4 s
7.9 s
1000 ft
305 m
9.4 s
10.1 s
1/4 mile
402 m
11.2 s
11.9 s
Trap speed
1/4 mile
402 m
212 km/h
132 mph
199 km/h
124 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Turbo 3.8
520 hp
388 kW
AUDIR8 Spyder (42)5.2 FSI V10
525 hp
391 kW

AUDI R8 Spyder (42) 5.2 FSI V10 has 5 hp more than Porsche 911 Cabriolet (991) Turbo 3.8.

The biggest power difference is between Porsche 911 Cabriolet (991) Turbo 3.8 and AUDI R8 Spyder (42) 5.2 FSI V10: 5 hp (4 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Turbo 3.8
660 Nm
487 lb-ft
AUDIR8 Spyder (42)5.2 FSI V10
530 Nm
391 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Turbo 3.8
1,665 kg
3,671 lb
AUDIR8 Spyder (42)5.2 FSI V10
1,725 kg
3,803 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Turbo 3.8
315 km/h
196 mph
AUDIR8 Spyder (42)5.2 FSI V10
313 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
Porsche911 Cabriolet (991)Turbo 3.83.5 s
AUDIR8 Spyder (42)5.2 FSI V104.1 s

Although AUDI R8 Spyder (42) 5.2 FSI V10 has more power, Porsche 911 Cabriolet (991) Turbo 3.8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 911 Cabriolet (991) Turbo 3.8 and AUDI R8 Spyder (42) 5.2 FSI V10: 0.6 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
Porsche911 Cabriolet (991)Turbo 3.8
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
AUDIR8 Spyder (42)5.2 FSI V10
14.2 L/100 km
16.6 mpg US
19.9 mpg UK

The biggest fuel consumption difference is between Porsche 911 Cabriolet (991) Turbo 3.8 and AUDI R8 Spyder (42) 5.2 FSI V10: 4.3 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
Porsche911 Cabriolet (991)Turbo 3.8
312 hp/t
233 kW/t
3.2 kg/hp
AUDIR8 Spyder (42)5.2 FSI V10
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
Porsche911 Cabriolet (991)Turbo 3.8
687 km
427 mi
AUDIR8 Spyder (42)5.2 FSI V10
563 km
350 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 Cabriolet (991)Turbo 3.8
520 hp
388 kW
3.5 s
315 km/h
196 mph
AUDIR8 Spyder (42)5.2 FSI V10
525 hp
391 kW
4.1 s
313 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
Porsche911 Cabriolet (991)Turbo 3.8
Power
520 hp
388 kW
0-100 km/h3.5 s
Top speed
315 km/h
196 mph
Doors/seats
2 doors
4 seats
Trunk
275 L
9.7 cu ft
Length
4,506 mm
177.4 in
Height
1,292 mm
50.9 in
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

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
Porsche911 Cabriolet (991)Turbo 3.8
Power
520 hp
388 kW
0-100 km/h3.5 s
Top speed
315 km/h
196 mph
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
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
14.2 L/100 km
16.6 mpg US
19.9 mpg UK

Porsche 911 Cabriolet (991) 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
Porsche911 Cabriolet (991)Turbo 3.8
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
3.5 s
AUDIR8 Spyder (42)5.2 FSI V10
14.2 L/100 km
16.6 mpg US
19.9 mpg UK
4.1 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
Porsche911 Cabriolet (991)Turbo 3.8
312 hp/t
233 kW/t
3.2 kg/hp
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
AUDIR8 Spyder (42)5.2 FSI V10
304 hp/t
227 kW/t
3.3 kg/hp
14.2 L/100 km
16.6 mpg US
19.9 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 Cabriolet (991)Turbo 3.8AUDIR8 Spyder (42)5.2 FSI V10
Power
520 hp
388 kW
525 hp
391 kW
Torque
660 Nm
487 lb-ft
530 Nm
391 lb-ft
Acceleration
3.5 s
4.1 s
Top speed
315 km/h
196 mph
313 km/h
194 mph
Lightness
1,665 kg
3,671 lb
1,725 kg
3,803 lb
Fuel consumption
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
14.2 L/100 km
16.6 mpg US
19.9 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
275 L
9.7 cu ft
Length
4,506 mm
177.4 in
Height
1,292 mm
50.9 in
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
Range score
687 km
427 mi
563 km
350 mi
CO2 score
231 g/km
332 g/km
Trunk score
275 L
9.7 cu ft
100 L
3.5 cu ft
Power-to-weight score
312 hp/t
233 kW/t
3.2 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
VehiclePorsche 911 Cabriolet (991) Turbo 3.8AUDI R8 Spyder (42) 5.2 FSI V10
Consumption9.9 L/100 km23.8 mpg US28.5 mpg UK14.2 L/100 km16.6 mpg US19.9 mpg UK
Cost / 100 km17.33 LC100 km24.85 LC100 km
Cost / 100 mi27.88 LC100 mi39.99 LC100 mi
Annual fuel used1,485 L392 US gal327 UK gal2,130 L563 US gal469 UK gal
Annual fuel cost2,599 LC/year3,728 LC/year

Head-to-head comparisons

Porsche 911 Cabriolet (991) Turbo 3.8

  • Has 130 Nm more
  • Is 60 kg lighter
  • Is 0.6 s quicker from 0-100 km/h
  • Has 2 km/h (1 mph) higher top speed
  • Uses 4.3 L/100 km less fuel
  • Has 8 hp/t better power-to-weight
  • Has 123 km (77 mi) more estimated range
  • Has 175 L more trunk volume
  • Emits 101 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Lowest power

AUDI R8 Spyder (42) 5.2 FSI V10

  • Has 5 hp more

Pros

  • Most powerful

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 Cabriolet (991) Turbo 3.8
AUDI R8 Spyder (42) 5.2 FSI V10
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