Comparison Porsche Cayman (987c, facelift 2009) S 3.4 (320 Hp) PDK & Renault Megane I Cabriolet (Phase II, 1999) 1.6i 16V (107 Hp) Automatic & Mercedes-Benz A-class (W176) A 250 (211 Hp) 4MATIC
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| Brand: | Porsche | Renault | Mercedes-Benz |
| Model: | Cayman | Megane | A-class |
| Generation: | Cayman (987c, facelift 2009) | Megane I Cabriolet (Phase II, 1999) | A-class (W176) |
| Engine / modification: | S 3.4 (320 Hp) PDK | 1.6i 16V (107 Hp) Automatic | A 250 (211 Hp) 4MATIC |
| Production start: | 2009 year | 1999 year | 2013 year |
| Production end: | 2012 year | 2003 year | 2015 year |
| Coupe type: | Coupe | Cabriolet | Hatchback |
| Num. of Doors: | 2 | 2 | 5 |
| Num. of seats: | 2 | 4 | 5 |
| Fuel consumption / economy - urban: | 14.1 l/100 km | 9.7 l/100 km | 8.4 l/100 km |
| Fuel consumption / economy - extra urban: | 6.6 l/100 km | 5.6 l/100 km | 5.5-5.4 l/100 km |
| Fuel consumption / economy - combined: | 9.4 l/100 km | 7.1 l/100 km | 6.6-6.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | ||
| Fuel tank volume: | 65 l | 60 l | 56 l |
| Emission standard: | Euro 5 | Euro 3 | Euro 6 |
| CO2 emissions: | 221 g/km | 174 g/km | 159-156 g/km |
| Power: | 320 hp | 107 hp | 211 hp |
| Max power in: | 7200 rpm. | 5750 rpm. | 5500 rpm. |
| Maximum speed: | 275 km/h | 191 km/h | 240 km/h |
| Acceleration from 0 to 100 km/h: | 5.1 sec | 12.5 sec | 6.5 sec |
| Acceleration from 0 to 200 km/h: | 19.7 sec | ||
| Torque: | 370 Nm @ 4750 rpm. | 148 Nm @ 3750 rpm. | 350 Nm @ 1200-4000 rpm. |
| Stopping distance 100 km/h - 0: | 34.5 m | ||
| stopping distance 200 km/h - 0: | 136.4 m | ||
| Model Engine: | MA1.21 | K4M | M 270 DE 20 AL |
| Engine position: | Middle, longitudinal | Front, transverse | Front, transverse |
| Engine displacement: | 3436 cm3 | 1598 cm3 | 1991 cm3 |
| Engine oil capacity: | 7.5 l | 4.4 l | 5.8 l |
| Coolant: | 23-25 l | 7.9 l | 7.8 l |
| Fuel System: | Direct injection | Multi-point injection | Direct injection |
| Maximum engine speed: | 7500 rpm. | ||
| Aspiration / Turbine: | Turbocharging | ||
| Position of cylinders: | Boxer | Inline | Inline |
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 6 | 4 | 4 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 12.5 | 10 | 9.8 |
| Piston Stroke: | 77.5 mm | 80.5 mm | |
| Cylinder Bore: | 97 mm | 79.5 mm | |
| Wheel Drive: | Rear wheel drive | Front wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 7 | 4 | 7G-DCT |
| Length: | 4347 mm | 4082 mm | 4292 mm |
| Width: | 1801 mm | 1698 mm | 1780 mm |
| Width including mirrors: | 1978 mm | ||
| Height: | 1306 mm | 1368 mm | 1433 mm |
| Wheelbase: | 2415 mm | 2468 mm | 2699 mm |
| Front track: | 1486 mm | 1450 mm | 1553 mm |
| Rear (Back) track: | 1528 mm | 1432 mm | 1552 mm |
| Ride height(clearance): | 126 mm | ||
| Minimum volume of Luggage (trunk): | 260 l | 281 l | 341 l |
| Maximum amount of Luggage (trunk): | 1157 l | ||
| Front suspension: | Independent type McPherson | Independent, spring | McPherson |
| Rear suspension: | McPherson | Torsion | Trailing |
| Max weight: | 1675 kg | 1590 kg | 2030 kg |
| Front brakes: | Ventilated discs | Ventilated discs | |
| Rear brakes: | Drum | Disc | |
| Kerb Weight: | 1375 kg | 1155 kg | 1505 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Hydraulic Steering | Electric Steering |
| Max. roof load: | 60 kg | ||
| Minimum turning circle (turning diameter): | 11.1 m | 11.30 m | 11 m |
| Permitted trailer load with brakes (12%): | 1250 kg | ||
| Permitted trailer load without brakes: | 615 kg | ||
| Permitted towbar download: | 75 kg | ||
| Tire size: | Front wheel tires: 235/40 ZR 18 | 185/55 R15 | 225/45 R17 |
| Wheel rims size: | Front wheel rims: 8 J x 18 | 6.0J x 15 | R17 |