Porsche 911 (991)
Car comparison
Porsche 911 (991) Carrera 3.4vsPorsche Cayman (987C) · Facelift 2009 S 3.4
Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.
New comparisonPorsche Cayman (987C) · Facelift 2009
S 3.4
Comparison overview
Use the estimates as comparison hints and verify exact figures before making decisions.
Best choices
Porsche 911 (991) Carrera 3.4
- Quickest 0-100 km/h4.8 s
- Fastest top speed289 km/h180 mph
- Most powerful350 hp261 kW
- Highest torque390 Nm288 lb-ft
- Best power-to-weight250 hp/t186 kW/t4.0 kg/hp
- Lowest combined fuel consumption9.0 L/100 km26.1 mpg US31.4 mpg UK
- Lowest city consumption12.4 L/100 km19.0 mpg US22.8 mpg UK
- Lowest CO2 emissions211 g/km
- Best estimated range711 km442 mi
- Largest trunk340 L
- Best overall score66/100
- Best performance score74/100
- Best economy score83/100
- Best practicality score48/100
Porsche Cayman (987C) Facelift 2009 S 3.4
- Lightest1,375 kg3,031 lb
- Lowest highway consumption6.6 L/100 km35.6 mpg US42.8 mpg UK
Specification comparison
| Model | Porsche911 (991)Carrera 3.4 | PorscheCayman (987C)Facelift 2009S 3.4 |
|---|---|---|
| Power | 350hp261kW | 320hp239kW |
| Torque | 390Nm288lb-ft | 370Nm273lb-ft |
| Curb weight | 1,400kg3,086lb | 1,375kg3,031lb |
| Gross weight | 1,795kg3,957lb | 1,675kg3,693lb |
| Top speed | 289 km/h 180 mph | Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph Calculated |
| To 99% top speed | 65.7s99% target: 286 km/h / 178 mph Calculated | 113.8s99% target: 282 km/h / 175 mph Calculated |
| 0-100 km/h | 4.8s | 5.1s |
| 0-200 km/h | 14.7s Calculated | 19.7s |
| 0-60 mph | 4.6s Calculated | 4.8s Calculated |
| Fuel consumption | 9L/100 km26.1mpg US31.4mpg UK | 9.4L/100 km25mpg US30.1mpg UK |
| Fuel consumption city | 12.4L/100 km19mpg US22.8mpg UK | 14.1L/100 km16.7mpg US20.0mpg UK |
| Fuel consumption highway | 7L/100 km33.6mpg US40.4mpg UK | 6.6L/100 km35.6mpg US42.8mpg UK |
| Quarter mile | 12.8s Calculated | 13.3s Calculated |
| Power-to-weight | 250hp/t186kW/t113hp/1000 lb Calculated | 233hp/t174kW/t106hp/1000 lb Calculated |
| Torque-to-weight | 279Nm/t186lb-ft/ton Calculated | 269Nm/t180lb-ft/ton Calculated |
| Estimated range | 711km442mi Calculated | 691km430mi Calculated |
| Displacement | 3,436cc210cu in | 3,436cc210cu in |
| Length | 4,491mm177in | 4,347mm171in |
| Width | 1,808mm71in | 1,801mm71in |
| Height | 1,303mm51in | 1,306mm51in |
| Wheelbase | 2,450mm96in | 2,415mm95in |
| Front track | 1,532mm60in | 1,486mm59in |
| Rear track | 1,518mm60in | 1,528mm60in |
| Ground clearance | - | 126mm5in |
| Trunk volume | 340L | 260L |
| Doors | 2 | 2 |
| Seats | 4 | 2 |
| Fuel tank | 64L | 65L |
| CO2 emissions | 211g/km | 221g/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 (991) Carrera 3.4: Power / Torque
- Porsche Cayman (987C) Facelift 2009 S 3.4: Power / Torque
| Vehicle | Peak power RPM | Peak torque RPM | Max engine speed |
|---|---|---|---|
| Porsche911 (991)Carrera 3.4 | 7,400 rpm | 5,600 rpm | 7,650 rpm |
| PorscheCayman (987C)Facelift 2009S 3.4 | 7,200 rpm | 4,750 rpm | 7,500 rpm |
Acceleration curve
Estimated speed over time for selected vehicles.
| Metric | Porsche911 (991)Carrera 3.4 | PorscheCayman (987C)Facelift 2009S 3.4 |
|---|---|---|
| Acceleration checkpoints | ||
0-60 mph 0-97 km/h | 4.6 s | 4.8 s |
0-100 km/h 0-62 mph | 4.8 s | 5.1 s |
0-200 km/h 0-124 mph | 14.7 s | 19.7 s |
| Top speed | 289 km/h 180 mph | Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph Likely limited |
| Drag race simulation | ||
60 ft 18 m | 2.2 s | 2.0 s |
330 ft 101 m | 5.7 s | 5.6 s |
1/8 mile 201 m | 8.4 s | 8.6 s |
1000 ft 305 m | 10.8 s | 11.2 s |
1/4 mile 402 m | 12.8 s | 13.3 s |
Trap speed 1/4 mile 402 m | 186 km/h 116 mph | 169 km/h 105 mph |
Power comparison
Bar comparison chart for Power. Higher is better · hp / kW
| Vehicle | Value |
|---|---|
| Porsche911 (991)Carrera 3.4 | 350 hp 261 kW |
| PorscheCayman (987C)Facelift 2009S 3.4 | 320 hp 239 kW |
Porsche 911 (991) Carrera 3.4 has 30 hp more than Porsche Cayman (987C) Facelift 2009 S 3.4.
The biggest power difference is between Porsche Cayman (987C) Facelift 2009 S 3.4 and Porsche 911 (991) Carrera 3.4: 30 hp (22 kW).
Torque comparison
Bar comparison chart for Torque. Higher is better · Nm / lb-ft
| Vehicle | Value |
|---|---|
| Porsche911 (991)Carrera 3.4 | 390 Nm 288 lb-ft |
| PorscheCayman (987C)Facelift 2009S 3.4 | 370 Nm 273 lb-ft |
Curb weight comparison
Bar comparison chart for Curb weight. Lower is better · kg / lb
| Vehicle | Value |
|---|---|
| Porsche911 (991)Carrera 3.4 | 1,400 kg 3,086 lb |
| PorscheCayman (987C)Facelift 2009S 3.4 | 1,375 kg 3,031 lb |
Top speed without limiter comparison
Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph
| Vehicle | Value |
|---|---|
| Porsche911 (991)Carrera 3.4 | 289 km/h 180 mph |
| PorscheCayman (987C)Facelift 2009S 3.4 | Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph |
0-100 km/h comparison
Bar comparison chart for 0-100 km/h. Lower is better · seconds
| Vehicle | Value |
|---|---|
| Porsche911 (991)Carrera 3.4 | 4.8 s |
| PorscheCayman (987C)Facelift 2009S 3.4 | 5.1 s |
The biggest 0-100 km/h difference is between Porsche 911 (991) Carrera 3.4 and Porsche Cayman (987C) Facelift 2009 S 3.4: 0.3 s.
Fuel consumption comparison
Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK
| Vehicle | Value |
|---|---|
| Porsche911 (991)Carrera 3.4 | 9.0 L/100 km 26.1 mpg US 31.4 mpg UK |
| PorscheCayman (987C)Facelift 2009S 3.4 | 9.4 L/100 km 25.0 mpg US 30.1 mpg UK |
Power-to-weight comparison
Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t
| Vehicle | Value |
|---|---|
| Porsche911 (991)Carrera 3.4 | 250 hp/t 186 kW/t 4.0 kg/hp |
| PorscheCayman (987C)Facelift 2009S 3.4 | 233 hp/t 174 kW/t 4.3 kg/hp |
Estimated range comparison
Bar comparison chart for Estimated range. Higher is better · km / mi
| Vehicle | Value |
|---|---|
| Porsche911 (991)Carrera 3.4 | 711 km 442 mi |
| PorscheCayman (987C)Facelift 2009S 3.4 | 691 km 430 mi |
Performance spider chart
Radar chart comparing normalized performance and fuel-consumption scores.
| Vehicle | Power | Acceleration | Top speed |
|---|---|---|---|
| Porsche911 (991)Carrera 3.4 | 350 hp 261 kW | 4.8 s | 289 km/h 180 mph |
| PorscheCayman (987C)Facelift 2009S 3.4 | 320 hp 239 kW | 5.1 s | Unrestricted 285 km/h177 mph Restricted 275 km/h171 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 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Porsche911 (991)Carrera 3.4 |
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| PorscheCayman (987C)Facelift 2009S 3.4 |
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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 | ||||||
|---|---|---|---|---|---|---|---|---|
| Porsche911 (991)Carrera 3.4 |
| 9.0 L/100 km 26.1 mpg US 31.4 mpg UK | ||||||
| PorscheCayman (987C)Facelift 2009S 3.4 |
| 9.4 L/100 km 25.0 mpg US 30.1 mpg UK | ||||||
Porsche 911 (991) Carrera 3.4 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.
| Vehicle | Fuel consumption, L/100 km | 0-100 km/h, s |
|---|---|---|
| Porsche911 (991)Carrera 3.4 | 9.0 L/100 km 26.1 mpg US 31.4 mpg UK | 4.8 s |
| PorscheCayman (987C)Facelift 2009S 3.4 | 9.4 L/100 km 25.0 mpg US 30.1 mpg UK | 5.1 s |
Power-to-weight vs fuel consumption
The shaded area favors higher power-to-weight with lower combined fuel consumption.
| Vehicle | Power-to-weight, hp/t | Fuel consumption, L/100 km |
|---|---|---|
| Porsche911 (991)Carrera 3.4 | 250 hp/t 186 kW/t 4.0 kg/hp | 9.0 L/100 km 26.1 mpg US 31.4 mpg UK |
| PorscheCayman (987C)Facelift 2009S 3.4 | 233 hp/t 174 kW/t 4.3 kg/hp | 9.4 L/100 km 25.0 mpg US 30.1 mpg UK |
Detailed score breakdown
| Vehicle | Porsche911 (991)Carrera 3.4 | PorscheCayman (987C)Facelift 2009S 3.4 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Power | 350 hp 261 kW | 320 hp 239 kW | ||||||||||||||||
| Torque | 390 Nm 288 lb-ft | 370 Nm 273 lb-ft | ||||||||||||||||
| Acceleration | 4.8 s | 5.1 s | ||||||||||||||||
| Top speed | 289 km/h 180 mph | Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph | ||||||||||||||||
| Lightness | 1,400 kg 3,086 lb | 1,375 kg 3,031 lb | ||||||||||||||||
| Fuel consumption | 9.0 L/100 km 26.1 mpg US 31.4 mpg UK | 9.4 L/100 km 25.0 mpg US 30.1 mpg UK | ||||||||||||||||
| Practicality |
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| Range score | 711 km 442 mi | 691 km 430 mi | ||||||||||||||||
| CO2 score | 211 g/km | 221 g/km | ||||||||||||||||
| Trunk score | 340 L 12.0 cu ft | 260 L 9.2 cu ft | ||||||||||||||||
| Power-to-weight score | 250 hp/t 186 kW/t 4.0 kg/hp | 233 hp/t 174 kW/t 4.3 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
| Vehicle | Porsche 911 (991) Carrera 3.4 | Porsche Cayman (987C) Facelift 2009 S 3.4 |
|---|---|---|
| Consumption | 9 L/100 km26.1 mpg US31.4 mpg UK | 9.4 L/100 km25 mpg US30.1 mpg UK |
| Cost / 100 km | 15.75 LC100 km | 16.45 LC100 km |
| Cost / 100 mi | 25.35 LC100 mi | 26.47 LC100 mi |
| Annual fuel used | 1,350 L357 US gal297 UK gal | 1,410 L372 US gal310 UK gal |
| Annual fuel cost | 2,363 LC/year | 2,468 LC/year |
Head-to-head comparisons
Porsche 911 (991) Carrera 3.4
- Has 30 hp more
- Has 20 Nm more
- Is 0.3 s quicker from 0-100 km/h
- Has 4 km/h (2 mph) higher top speed
- Uses 0.4 L/100 km less fuel
- Has 17 hp/t better power-to-weight
- Has 20 km (12 mi) more estimated range
- Has 80 L more trunk volume
- Emits 10 g/km less CO2
Pros
- Quickest 0-100 km/h in this comparison
- Highest top speed
- Most powerful
- Highest torque
- Lowest combined fuel consumption
- Best power-to-weight ratio
- Best estimated range
- Largest trunk
Cons
- Heaviest
Porsche Cayman (987C) Facelift 2009 S 3.4
- Is 25 kg lighter
Pros
- Lightest
Cons
- Slowest 0-100 km/h
- Lowest power
- Highest combined fuel consumption
- Lowest top speed
- Smallest trunk
- Highest CO2 emissions
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