Comparison Porsche Cayman (987c) 2.7 (245 Hp) & BMW 6 Series Convertible (F12 LCI, facelift 2015) 640d (313 Hp) Steptronic
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| Brand: | Porsche | BMW |
| Model: | Cayman | 6 Series |
| Generation: | Cayman (987c) | 6 Series Convertible (F12 LCI, facelift 2015) |
| Engine / modification: | 2.7 (245 Hp) | 640d (313 Hp) Steptronic |
| Production start: | 2006 year | 2015 year |
| Production end: | 2009 year | 2018 year |
| Coupe type: | Coupe | Cabriolet |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 2 | 4 |
| Fuel consumption / economy - urban: | 13.8 l/100 km | 6.2-6.7 l/100 km |
| Fuel consumption / economy - extra urban: | 6.8 l/100 km | 5.0-5.3 l/100 km |
| Fuel consumption / economy - combined: | 9.3 l/100 km | 5.4-5.8 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.29 | 0.29 |
| Fuel tank volume: | 64 l | 70 l |
| Emission standard: | Euro 4 | Euro 6 |
| CO2 emissions: | 222 g/km | 144-153 g/km |
| Power: | 245 hp | 313 hp |
| Max power in: | 6500 rpm. | 4400 rpm. |
| Maximum speed: | 258 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 6.1 sec | 5.5 sec |
| Acceleration from 0 to 200 km/h: | 23.7 sec | |
| Torque: | 273 Nm @ 4600-6000 rpm. | 630 Nm @ 1500-2500 rpm. |
| Stopping distance 100 km/h - 0: | 35 m | |
| Model Engine: | M 97/20 | N57D30 |
| Engine position: | Middle, longitudinal | Front, longitudinal |
| Engine displacement: | 2687 cm3 | 2993 cm3 |
| Engine oil capacity: | 7.75 l | 6.5 l |
| Coolant: | 22 l | 8.0 l |
| Fuel System: | Diesel Commonrail | |
| Maximum engine speed: | 7300 rpm. | |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Boxer | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 11.3 | 16.5 |
| Piston Stroke: | 78 mm | 90 mm |
| Cylinder Bore: | 85.5 mm | 84 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | |
| Number of Gears (manual transmission): | 5 | |
| Length: | 4341 mm | 4894 mm |
| Width: | 1801 mm | 1894 mm |
| Width including mirrors: | 1978 mm | |
| Height: | 1305 mm | 1365 mm |
| Wheelbase: | 2415 mm | 2855 mm |
| Front track: | 1490 mm | 1600 mm |
| Rear (Back) track: | 1534 mm | 1665 mm |
| Ride height(clearance): | 121 mm | 123 mm |
| Minimum volume of Luggage (trunk): | 260 l | 300 l |
| Maximum amount of Luggage (trunk): | 350 l | |
| Front suspension: | Independent type McPherson | Double wishbone |
| Rear suspension: | McPherson | Multi-link independent |
| Max weight: | 1620 kg | 2365 kg |
| Front brakes: | Disc | |
| Rear brakes: | Disc | |
| Kerb Weight: | 1300 kg | 1860 kg |
| ABS: | yes | |
| Steering type: | 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 | 11.7 m |
| Tire size: | Front wheel tires: 205/55 ZR 17 | 225/55 R17; 245/45 R18; 275/45 R18; 245/40 R19; 275/35 R19; 245/35 R20; 275/30 R20 |
| Wheel rims size: | Front wheel rims: 6.5 J x 17 | 8J x 17; 8J x 18; 9J x 18; 8.5J x 19; 9J x 19; 8.5J x 20; 9J x 20 |