Car comparison

Porsche Cayman (987C) · Facelift 2009 S 3.4vsBMW 1 Series Coupe (E82) 135i

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

New comparison

Porsche Cayman (987C) · Facelift 2009

S 3.4

320 hp3436 ccGasolineRWDAutomaticNaturally aspiratedCoupe2009-2012

BMW 1 Series Coupe (E82)

135i

306 hp2979 ccGasolineRWDDual-clutchTurbochargedCoupe2010-2011

Comparison overview

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

Porsche Cayman (987C) Facelift 2009 S 3.4

Quickest 0-100 km/h
5.1 s
Fastest top speed
285 km/h
177 mph Unrestricted
275 km/h
171 mph Restricted
Most powerful
320 hp
239 kW
Lightest
1,375 kg
3,031 lb
Best power-to-weight
233 hp/t
174 kW/t
4.3 kg/hp
Lowest highway consumption
6.6 L/100 km
35.6 mpg US
42.8 mpg UK
Best estimated range
691 km
430 mi
Best performance score
71/100

BMW 1 Series Coupe (E82) 135i

Highest torque
400 Nm
295 lb-ft
Lowest combined fuel consumption
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
Lowest city consumption
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Largest trunk
370 L
Best overall score
62/100
Best economy score
84/100
Best practicality score
50/100

Specification comparison

Specification comparison
Model	PorscheCayman (987C)Facelift 2009S 3.4	BMW1 Series Coupe (E82)135i
Power	320hp239kW	306hp228kW
Torque	370Nm273lb-ft	400Nm295lb-ft
Curb weight	1,375kg3,031lb	1,470kg3,241lb
Gross weight	1,675kg3,693lb	1,910kg4,211lb
Top speed	Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph Calculated	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph Calculated
To 99% top speed	113.8s99% target: 282 km/h / 175 mph Calculated	71.5s99% target: 262 km/h / 163 mph Calculated
0-100 km/h	5.1s	5.2s
0-200 km/h	19.7s	18.2s Calculated
0-60 mph	4.8s Calculated	4.9s Calculated
Fuel consumption	9.4L/100 km25mpg US30.1mpg UK	8.5L/100 km27.7mpg US33.2mpg UK
Fuel consumption city	14.1L/100 km16.7mpg US20.0mpg UK	11.7L/100 km20.1mpg US24.1mpg UK
Fuel consumption highway	6.6L/100 km35.6mpg US42.8mpg UK	6.7L/100 km35.1mpg US42.2mpg UK
Quarter mile	13.3s Calculated	13.3s Calculated
Power-to-weight	233hp/t174kW/t106hp/1000 lb Calculated	208hp/t155kW/t94hp/1000 lb Calculated
Torque-to-weight	269Nm/t180lb-ft/ton Calculated	272Nm/t182lb-ft/ton Calculated
Estimated range	691km430mi Calculated	624km387mi Calculated
Displacement	3,436cc210cu in	2,979cc182cu in
Length	4,347mm171in	4,360mm172in
Width	1,801mm71in	1,748mm69in
Height	1,306mm51in	1,408mm55in
Wheelbase	2,415mm95in	2,660mm105in
Front track	1,486mm59in	1,470mm58in
Rear track	1,528mm60in	1,497mm59in
Ground clearance	126mm5in	132mm5in
Trunk volume	260L	370L
Doors	2	2
Seats	2	4
Fuel tank	65L	53L
CO2 emissions	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 Cayman (987C) Facelift 2009 S 3.4BMW 1 Series Coupe (E82) 135iPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
PorscheCayman (987C)Facelift 2009S 3.4	7,200 rpm	4,750 rpm	7,500 rpm
BMW1 Series Coupe (E82)135i	5,800 rpm	1,200-5,000 rpm	6,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	PorscheCayman (987C)Facelift 2009S 3.4	BMW1 Series Coupe (E82)135i
	Acceleration checkpoints
0-60 mph 0-97 km/h	4.8 s	4.9 s
0-100 km/h 0-62 mph	5.1 s	5.2 s
0-200 km/h 0-124 mph	19.7 s	18.2 s
Top speed	Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph Likely limited	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph Limited
	Drag race simulation
60 ft 18 m	2.0 s	2.2 s
330 ft 101 m	5.6 s	5.8 s
1/8 mile 201 m	8.6 s	8.7 s
1000 ft 305 m	11.2 s	11.2 s
1/4 mile 402 m	13.3 s	13.3 s
Trap speed 1/4 mile 402 m	169 km/h 105 mph	174 km/h 108 mph

Power comparison

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

Chart data table
Vehicle	Value
PorscheCayman (987C)Facelift 2009S 3.4	320 hp 239 kW
BMW1 Series Coupe (E82)135i	306 hp 228 kW

Porsche Cayman (987C) Facelift 2009 S 3.4 has 14 hp more than BMW 1 Series Coupe (E82) 135i.

The biggest power difference is between BMW 1 Series Coupe (E82) 135i and Porsche Cayman (987C) Facelift 2009 S 3.4: 14 hp (10 kW).

Torque comparison

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

Chart data table
Vehicle	Value
PorscheCayman (987C)Facelift 2009S 3.4	370 Nm 273 lb-ft
BMW1 Series Coupe (E82)135i	400 Nm 295 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
PorscheCayman (987C)Facelift 2009S 3.4	1,375 kg 3,031 lb
BMW1 Series Coupe (E82)135i	1,470 kg 3,241 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
PorscheCayman (987C)Facelift 2009S 3.4	Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph
BMW1 Series Coupe (E82)135i	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
PorscheCayman (987C)Facelift 2009S 3.4	5.1 s
BMW1 Series Coupe (E82)135i	5.2 s

The biggest 0-100 km/h difference is between Porsche Cayman (987C) Facelift 2009 S 3.4 and BMW 1 Series Coupe (E82) 135i: 0.1 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
PorscheCayman (987C)Facelift 2009S 3.4	9.4 L/100 km 25.0 mpg US 30.1 mpg UK
BMW1 Series Coupe (E82)135i	8.5 L/100 km 27.7 mpg US 33.2 mpg UK

The biggest fuel consumption difference is between BMW 1 Series Coupe (E82) 135i and Porsche Cayman (987C) Facelift 2009 S 3.4: 0.9 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
PorscheCayman (987C)Facelift 2009S 3.4	233 hp/t 174 kW/t 4.3 kg/hp
BMW1 Series Coupe (E82)135i	208 hp/t 155 kW/t 4.8 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
PorscheCayman (987C)Facelift 2009S 3.4	691 km 430 mi
BMW1 Series Coupe (E82)135i	624 km 387 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
PorscheCayman (987C)Facelift 2009S 3.4	320 hp 239 kW	5.1 s	Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph
BMW1 Series Coupe (E82)135i	306 hp 228 kW	5.2 s	Unrestricted 265 km/h165 mph Restricted 250 km/h155 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

PorscheCayman (987C)Facelift 2009S 3.4

Power	320 hp 239 kW
0-100 km/h	5.1 s
Top speed Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph

Doors/seats	2 doors 2 seats
Trunk	260 L 9.2 cu ft
Length	4,347 mm 171.1 in
Height	1,306 mm 51.4 in

BMW1 Series Coupe (E82)135i

Power	306 hp 228 kW
0-100 km/h	5.2 s
Top speed Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph

Doors/seats	2 doors 4 seats
Trunk	370 L 13.1 cu ft
Length	4,360 mm 171.7 in
Height	1,408 mm 55.4 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

PorscheCayman (987C)Facelift 2009S 3.4

Power	320 hp 239 kW
0-100 km/h	5.1 s
Top speed Unrestricted 285 km/h177 mph Restricted 275 km/h171 mph

9.4 L/100 km

25.0 mpg US

30.1 mpg UK

BMW1 Series Coupe (E82)135i

Power	306 hp 228 kW
0-100 km/h	5.2 s
Top speed Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph

8.5 L/100 km

27.7 mpg US

33.2 mpg UK

Porsche Cayman (987C) Facelift 2009 S 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.

Acceleration vs fuel consumption data table
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
PorscheCayman (987C)Facelift 2009S 3.4	9.4 L/100 km 25.0 mpg US 30.1 mpg UK	5.1 s
BMW1 Series Coupe (E82)135i	8.5 L/100 km 27.7 mpg US 33.2 mpg UK	5.2 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
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
BMW1 Series Coupe (E82)135i	208 hp/t 155 kW/t 4.8 kg/hp	8.5 L/100 km 27.7 mpg US 33.2 mpg UK

Detailed score breakdown

Vehicle

PorscheCayman (987C)Facelift 2009S 3.4

BMW1 Series Coupe (E82)135i

Power

320 hp

239 kW

306 hp

228 kW

Torque

370 Nm

273 lb-ft

400 Nm

295 lb-ft

Acceleration

5.1 s

5.2 s

Top speed

Unrestricted

285 km/h177 mph

Restricted

275 km/h171 mph

Unrestricted

265 km/h165 mph

Restricted

250 km/h155 mph

Lightness

1,375 kg

3,031 lb

1,470 kg

3,241 lb

Fuel consumption

9.4 L/100 km

25.0 mpg US

30.1 mpg UK

8.5 L/100 km

27.7 mpg US

33.2 mpg UK

Practicality

Doors/seats	2 doors 2 seats
Trunk	260 L 9.2 cu ft
Length	4,347 mm 171.1 in
Height	1,306 mm 51.4 in

Doors/seats	2 doors 4 seats
Trunk	370 L 13.1 cu ft
Length	4,360 mm 171.7 in
Height	1,408 mm 55.4 in

Range score

691 km

430 mi

624 km

387 mi

CO2 score

221 g/km

Trunk score

260 L

9.2 cu ft

370 L

13.1 cu ft

Power-to-weight score

233 hp/t

174 kW/t

4.3 kg/hp

208 hp/t

155 kW/t

4.8 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	Porsche Cayman (987C) Facelift 2009 S 3.4	BMW 1 Series Coupe (E82) 135i
Consumption	9.4 L/100 km25 mpg US30.1 mpg UK	8.5 L/100 km27.7 mpg US33.2 mpg UK
Cost / 100 km	16.45 LC100 km	14.88 LC100 km
Cost / 100 mi	26.47 LC100 mi	23.94 LC100 mi
Annual fuel used	1,410 L372 US gal310 UK gal	1,275 L337 US gal280 UK gal
Annual fuel cost	2,468 LC/year	2,231 LC/year