Comparison Porsche 911 Cabriolet (997) Carrera 4 3.6 (325 Hp) AWD Tiptronic S & Mercedes-Benz M-class (W164, facelift 2008) ML 350 CDI V6 (224 Hp) 4MATIC 7G-TRONIC & Mercedes-Benz G-class (W463, facelift 2008) G 500 V8 BA3 Final Edition (388 Hp) 4MATIC 7G-TRONIC
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| Brand: | Porsche | Mercedes-Benz | Mercedes-Benz |
| Model: | 911 | M-class | G-class |
| Generation: | 911 Cabriolet (997) | M-class (W164, facelift 2008) | G-class (W463, facelift 2008) |
| Engine / modification: | Carrera 4 3.6 (325 Hp) AWD Tiptronic S | ML 350 CDI V6 (224 Hp) 4MATIC 7G-TRONIC | G 500 V8 BA3 Final Edition (388 Hp) 4MATIC 7G-TRONIC |
| Production start: | 2005 year | 2009 year | 2011 year |
| Production end: | 2008 year | 2010 year | 2012 year |
| Coupe type: | Cabriolet | SUV | Off-road vehicle |
| Num. of Doors: | 2 | 5 | 3 |
| Num. of seats: | 4 | 5 | 5 |
| Fuel consumption / economy - urban: | 17.4 l/100 km | ||
| Fuel consumption / economy - extra urban: | 8.6 l/100 km | ||
| Fuel consumption / economy - combined: | 11.6 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | 0.34 | |
| Fuel tank volume: | 67 l | 95 l | 96 l |
| Emission standard: | Euro 4 | Euro 5 | |
| CO2 emissions: | 280 g/km | ||
| Power: | 325 hp | 224 hp | 388 hp |
| Max power in: | 6800 rpm. | 3800 rpm. | 6000 rpm. |
| Maximum speed: | 275 km/h | 215 km/h | 210 km/h |
| Acceleration from 0 to 100 km/h: | 5.8 sec | 8.6 sec | 5.9 sec |
| Torque: | 370 Nm @ 4250 rpm. | 510 Nm @ 1600-2800 rpm. | 530 Nm @ 2800-4800 rpm. |
| Model Engine: | M 96/05 | OM 642.940 | M 273.963 |
| Engine position: | Rear, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 3596 cm3 | 2987 cm3 | 5461 cm3 |
| Engine oil capacity: | 8.25 l | 8.5 l | 9 l |
| Coolant: | 32 l | ||
| Fuel System: | Multi-point injection | Diesel Commonrail | |
| Position of cylinders: | Boxer | ||
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 6 | 6 | 8 |
| Number of valves per cylinder: | 4 | 4 | |
| Compression ratio: | 11.3 | 17.7 | |
| Piston Stroke: | 92 mm | 90.5 mm | |
| Cylinder Bore: | 83 mm | 98 mm | |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 5 Tiptronic S | 7 G-TRONIC | 7 G-TRONIC |
| Length: | 4427 mm | 4781 mm | 4212 mm |
| Width: | 1852 mm | 1911 mm | 1760 mm |
| Width including mirrors: | 2124 mm | 2007 mm | |
| Height: | 1310 mm | 1815 mm | 1931 mm |
| Wheelbase: | 2350 mm | 2915 mm | 2400 mm |
| Front track: | 1627 mm | 1475 mm | |
| Rear (Back) track: | 1629 mm | 1475 mm | |
| Ride height(clearance): | 205 mm | ||
| Approach angle: | 27 ° | 36 ° | |
| Departure angle: | 26 ° | 27 ° | |
| Ramp angle: | 17 ° | 23 ° | |
| Climb angle: | 45 ° | 38.7 ° | |
| Front overhang: | 866 mm | 783 mm | |
| Rear overhang: | 1000 mm | 820 mm | |
| Wading depth: | 500 mm | 500 mm | |
| Minimum volume of Luggage (trunk): | 833 l | 250 l | |
| Maximum amount of Luggage (trunk): | 105 l | 2050 l | 1580 l |
| Front suspension: | McPherson | ||
| Rear suspension: | Multi-link independent | ||
| Max weight: | 1965 kg | 2830 kg | 2850 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc | Ventilated discs |
| Kerb Weight: | 1575 kg | 2110 kg | 2285 kg |
| ABS: | yes | ||
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls | |
| Power steering: | Hydraulic Steering | Hydraulic Steering | Hydraulic Steering |
| Max. roof load: | 100 kg | 150 kg | |
| Minimum turning circle (turning diameter): | 10.9 m | 11.6 m | 11.3 m |
| Permitted trailer load with brakes (12%): | 3500 kg | 2850 kg | |
| Permitted trailer load without brakes: | 750 kg | 750 kg | |
| Permitted towbar download: | 115 kg | ||
| Tire size: | 235/40 ZR18; 295/35 ZR18 | Front wheel tires: 235/65 R17; 255/55 R18; 255/50 R19; 265/45 R20; 265/40 R21 | 265/80 R18 |
| Wheel rims size: | 8J x 18; 11J x 18 | Front wheel rims: 7.5J x 17; 8J x 18; 8J x 19; 8.5J x 19; 8.5J x 20; 9J x 21 | 7.5J x 18 |