Comparison Porsche Cayenne (955) Turbo 4.5 V8 (450 Hp) Tiptronic S & Mercedes-Benz A-class Sedan (V177) A 250 (224 Hp) DCT & Aston Martin Rapide 6.0 V12 (476 Hp) Automatic
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| Brand: | Porsche | Mercedes-Benz | Aston Martin |
| Model: | Cayenne | A-class | Rapide |
| Generation: | Cayenne (955) | A-class Sedan (V177) | Rapide |
| Engine / modification: | Turbo 4.5 V8 (450 Hp) Tiptronic S | A 250 (224 Hp) DCT | 6.0 V12 (476 Hp) Automatic |
| Production start: | 2002 year | 2018 year | 2010 year |
| Production end: | 2006 year | 2013 year | |
| Coupe type: | Off-road vehicle | Sedan | Hatchback |
| Num. of Doors: | 5 | 4 | 5 |
| Num. of seats: | 5 | 5 | 4 |
| Fuel consumption / economy - urban: | 21.9 l/100 km | 8.0-8.2 l/100 km | 22.6 l/100 km |
| Fuel consumption / economy - extra urban: | 11.9 l/100 km | 5.0-5.1 l/100 km | 10.4 l/100 km |
| Fuel consumption / economy - combined: | 15.7 l/100 km | 6.1-6.3 l/100 km | 14.9 l/100 km |
| Fuel consumption at Low speed (WLTP): | 6.6 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.34 | ||
| Fuel tank volume: | 100 l | 43 l | 90 l |
| Fuel consumption at very high speed (WLTP): | 7.4 l/100 km | ||
| Emission standard: | Euro 4 | Euro 6 d | EURO V |
| CO2 emissions: | 378 g/km | 139-143 g/km | |
| Power: | 450 hp | 224 hp | 476 hp |
| Max power in: | 6000 rpm. | 5800 rpm. | 7000 rpm. |
| Maximum speed: | 266 km/h | 250 km/h | 296 km/h |
| Acceleration from 0 to 100 km/h: | 5.6 sec | 6.3 sec | 4.8 sec |
| CO2 emissions (WLTP): | 149-169 g/km | ||
| Torque: | 620 Nm @ 2250-4750 rpm. | 350 Nm @ 1800 rpm. | 600 Nm/5000 rpm. |
| Model Engine: | M48.50 | M 260.920 | |
| Engine position: | Front, longitudinal | Front, transverse | Front, longitudinal |
| Engine displacement: | 4511 cm3 | 1991 cm3 | 5935 cm3 |
| Engine oil capacity: | 8.5 l | 5.5 l | |
| Coolant: | 18-21 l | ||
| Fuel System: | Direct injection | Direct injection | Multi-point injection |
| Aspiration / Turbine: | Turbocharging | Turbocharger | |
| Position of cylinders: | V engine | Inline | V engine |
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 8 | 4 | 12 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 9.5 | 10.5 | 10.8 |
| Piston Stroke: | 83 mm | 92 mm | 79.5 mm |
| Cylinder Bore: | 93 mm | 83 mm | 89 mm |
| Wheel Drive: | All wheel drive (4x4) | Front wheel drive | |
| Number of Gears (automatic transmission): | 6 Tiptronic S | 7 DCT | 6 |
| Length: | 4782 mm | 4549 mm | 5019 mm |
| Width: | 1928 mm | 1796 mm | 1929 mm |
| Height: | 1699 mm | 1446 mm | 1360 mm |
| Wheelbase: | 2855 mm | 2729 mm | 2989 mm |
| Front track: | 1647 mm | 1567 mm | 1589 mm |
| Rear (Back) track: | 1662 mm | 1567 mm | 1613 mm |
| Ride height(clearance): | 104 mm | ||
| Approach angle: | 13.4 ° | ||
| Departure angle: | 15.5 ° | ||
| Ramp angle: | 9.4 ° | ||
| Front overhang: | 914 mm | ||
| Rear overhang: | 906 mm | ||
| Minimum volume of Luggage (trunk): | 540 l | 420 l | 395 l |
| Maximum amount of Luggage (trunk): | 1770 l | ||
| Front suspension: | Double wishbone | Independent, Spring McPherson, with stabilizer | |
| Rear suspension: | Multi-link independent | Independent, spring multi-link with stabilizer | |
| Max weight: | 3080 kg | 1995 kg | 2410 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc | Ventilated discs |
| Kerb Weight: | 2430 kg | 1390 kg | 2065 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.0 m | 13 m | |
| Permitted trailer load with brakes (12%): | 1600 kg | ||
| Permitted trailer load without brakes: | 730 kg | ||
| Tire size: | 255/55 R 18 | 205/55 R17 | |
| Wheel rims size: | 8J x 18 | 6.5J x 17 |