Comparison Porsche 911 Cabriolet (991) Carrera 4S 3.8 (400 Hp) & GMC Envoy II XL (GMT360) Denali 5.3i V8 (300 Hp) DoD Automatic
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| Brand: | Porsche | GMC |
| Model: | 911 | Envoy |
| Generation: | 911 Cabriolet (991) | Envoy II XL (GMT360) |
| Engine / modification: | Carrera 4S 3.8 (400 Hp) | Denali 5.3i V8 (300 Hp) DoD Automatic |
| Production start: | 2012 year | 2005 year |
| Production end: | 2006 year | |
| Coupe type: | Cabriolet | SUV |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 2+2 | 7 |
| Fuel consumption / economy - urban: | 13.9 l/100 km | 15.8 l/100 km |
| Fuel consumption / economy - extra urban: | 7.7 l/100 km | 10.7 l/100 km |
| Fuel consumption / economy - combined: | 10.0 l/100 km | 13.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 68 l | 96.1 l |
| Emission standard: | EURO VI | |
| CO2 emissions: | 235 g/km | |
| Power: | 400 hp | 300 hp |
| Max power in: | 7400 rpm. | 5200 rpm. |
| Maximum speed: | 296 km/h | 175 km/h |
| Acceleration from 0 to 100 km/h: | 4.7 sec | |
| Torque: | 440 Nm/5600 rpm. | 447 Nm/4000 rpm. |
| Model Engine: | LH6 Vortec 5300 | |
| Engine position: | Rear, longitudinal | Front, longitudinal |
| Engine displacement: | 3800 cm3 | 5328 cm3 |
| Engine oil capacity: | 6.6 l | |
| Coolant: | 17 l | |
| Fuel System: | Direct injection | Multi-point injection |
| Maximum engine speed: | 5900 rpm. | |
| Position of cylinders: | Boxer | V engine |
| Valvetrain: | OHV | |
| Number of cylinders: | 6 | 8 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 12.5 | 9.5 |
| Piston Stroke: | 77.5 mm | 92 mm |
| Cylinder Bore: | 102 mm | 96 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 4 Hydra-Matic | |
| Number of Gears (manual transmission): | 7 | |
| Length: | 4491 mm | 5271 mm |
| Width: | 1852 mm | 1897 mm |
| Height: | 1294 mm | 1917 mm |
| Wheelbase: | 2450 mm | 3275 mm |
| Front track: | 1538 mm | 1603 mm |
| Rear (Back) track: | 1552 mm | 1576 mm |
| Ride height(clearance): | 203 mm | |
| Approach angle: | 34.5 ° | |
| Departure angle: | 23.5 ° | |
| Minimum volume of Luggage (trunk): | 285 l | 594 l |
| Maximum amount of Luggage (trunk): | 3041 l | |
| Front suspension: | Independent type McPherson | Double wishbone |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 1935 kg | 2812 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1535 kg | 2165 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 12.6 m | |
| Permitted trailer load with brakes (12%): | 3221 kg | |
| Tire size: | 245/35 ZR20; 305/30 ZR20 | 245/65 R17; 245/60 R18 |
| Wheel rims size: | 8.5 J x 20; 11 J x 20 | 7.0J x 17; 8.0J x 18 |