Comparison Porsche Cayman (987c, facelift 2009) S 3.4 (320 Hp) & Chevrolet HHR 2.2 i 16V (141) & Cadillac ATS Coupe 2.0 (276 Hp) AWD
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| Brand: | Porsche | Chevrolet | Cadillac |
| Model: | Cayman | HHR | ATS |
| Generation: | Cayman (987c, facelift 2009) | HHR | ATS Coupe |
| Engine / modification: | S 3.4 (320 Hp) | 2.2 i 16V (141) | 2.0 (276 Hp) AWD |
| Production start: | 2009 year | 2005 year | 2015 year |
| Production end: | 2012 year | ||
| Coupe type: | Coupe | Combi | Coupe |
| Num. of Doors: | 2 | 5 | 2 |
| Num. of seats: | 2 | 5 | 4 |
| Fuel consumption / economy - urban: | 14.4 l/100 km | 10.0 l/100 km | 12.3 l/100 km |
| Fuel consumption / economy - extra urban: | 7.2 l/100 km | 8.7 l/100 km | 6.7 l/100 km |
| Fuel consumption / economy - combined: | 9.8 l/100 km | 9.4 l/100 km | 8.8 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.29 | 0.29 | |
| Fuel tank volume: | 65 l | 49 l | 60.5 l |
| Emission standard: | Euro 5 | ||
| CO2 emissions: | 230 g/km | 203 g/km | |
| Power: | 320 hp | 141 hp | 276 hp |
| Max power in: | 7200 rpm. | 5600 rpm. | 5500 rpm. |
| Maximum speed: | 277 km/h | ||
| Acceleration from 0 to 100 km/h: | 5.2 sec | 6.2 sec | |
| Acceleration from 0 to 200 km/h: | 18.1 sec | ||
| Torque: | 370 Nm @ 4750 rpm. | 210 Nm/4000 rpm. | 400 Nm @ 3000-4600 rpm. |
| Stopping distance 100 km/h - 0: | 33.5 m | ||
| stopping distance 200 km/h - 0: | 136.7 m | ||
| Model Engine: | MA1.21 | L61 | LTG |
| Engine position: | Middle, longitudinal | Front, transverse | Front, longitudinal |
| Engine displacement: | 3436 cm3 | 2198 cm3 | 1998 cm3 |
| Engine oil capacity: | 7.5 l | 5.7 l | |
| Coolant: | 23-25 l | 7.6 l | |
| Fuel System: | Direct injection | Multi-point injection | Direct injection |
| Maximum engine speed: | 7500 rpm. | 7000 rpm. | |
| Aspiration / Turbine: | Turbocharging | ||
| Position of cylinders: | Boxer | Inline | Inline |
| Valvetrain: | DOHC | - | DOHC-VVT |
| Number of cylinders: | 6 | 4 | 4 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 12.5 | 10 | 9.5 |
| Piston Stroke: | 77.5 mm | 94.6 mm | 86 mm |
| Cylinder Bore: | 97 mm | 86 mm | 86 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 4 | ||
| Number of Gears (manual transmission): | 6 | 5 | 6 |
| Length: | 4347 mm | 4475 mm | 4663 mm |
| Width: | 1801 mm | 1755 mm | 1841 mm |
| Width including mirrors: | 1978 mm | ||
| Height: | 1306 mm | 1603 mm | 1392-1399 mm |
| Wheelbase: | 2415 mm | 2628 mm | 2775 mm |
| Front track: | 1486 mm | 1491 mm | 1532 mm |
| Rear (Back) track: | 1528 mm | 1491 mm | 1568 mm |
| Ride height(clearance): | 126 mm | ||
| Minimum volume of Luggage (trunk): | 260 l | 638 l | 295 l |
| Maximum amount of Luggage (trunk): | 1785 l | ||
| Front suspension: | Independent type McPherson | The depreciated rack | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | McPherson | Transverse stabilizer | Multi-link independent |
| Max weight: | 1645 kg | 2050 kg | |
| Front brakes: | Ventilated discs | Ventilated discs | |
| Rear brakes: | Drum | Ventilated discs | |
| Kerb Weight: | 1350 kg | 1431 kg | |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering | |
| Max. roof load: | 60 kg | ||
| Minimum turning circle (turning diameter): | 11.1 m | 11 m | 11.6 m |
| Permitted trailer load without brakes: | 454 kg | ||
| Tire size: | Front wheel tires: 235/40 ZR 18 | 215/55 R16 | 225/40 R18; 255/35 R18 |
| Wheel rims size: | Front wheel rims: 8 J x 18 | 6.5J X 16 | 8J x 18; 9J x 18 |