Comparison Porsche 911 Cabriolet (991) Carrera GTS 3.8 (430 Hp) PDK & GMC Envoy II XL (GMT360) 4.2i 24V (291 Hp) 4x4 Automatic
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| Brand: | Porsche | GMC |
| Model: | 911 | Envoy |
| Generation: | 911 Cabriolet (991) | Envoy II XL (GMT360) |
| Engine / modification: | Carrera GTS 3.8 (430 Hp) PDK | 4.2i 24V (291 Hp) 4x4 Automatic |
| Production start: | 2014 year | 2006 year |
| Production end: | 2006 year | |
| Coupe type: | Cabriolet | SUV |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 2+2 | 7 |
| Fuel consumption / economy - urban: | 12.3 l/100 km | 15.7 l/100 km |
| Fuel consumption / economy - extra urban: | 6.9 l/100 km | 12.4 l/100 km |
| Fuel consumption / economy - combined: | 8.9 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 64 l | 96.1 l |
| Emission standard: | EURO VI | |
| CO2 emissions: | 207 g/km | |
| Power: | 430 hp | 291 hp |
| Max power in: | 7500 rpm. | 6000 rpm. |
| Maximum speed: | 302 km/h | 175 km/h |
| Acceleration from 0 to 100 km/h: | 4.2 sec | |
| Torque: | 440 Nm/5750 rpm. | 377 Nm/4800 rpm. |
| Model Engine: | LL8 Vortec 4200 | |
| Engine position: | Rear, longitudinal | Front, longitudinal |
| Engine displacement: | 3800 cm3 | 4160 cm3 |
| Engine oil capacity: | 6.6 l | |
| Fuel System: | Direct injection | Multi-point injection |
| Maximum engine speed: | 6300 rpm. | |
| Position of cylinders: | Boxer | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 12.5 | 10.3 |
| Piston Stroke: | 77.5 mm | 102 mm |
| Cylinder Bore: | 102 mm | 93 mm |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 7 PDK | 4 Hydra-Matic |
| Length: | 4509 mm | 5271 mm |
| Width: | 1852 mm | 1897 mm |
| Height: | 1292 mm | 1917 mm |
| Wheelbase: | 2450 mm | 3275 mm |
| Front track: | 1538 mm | 1603 mm |
| Rear (Back) track: | 1560 mm | 1576 mm |
| Ride height(clearance): | 203 mm | |
| Approach angle: | 34 ° | |
| Departure angle: | 23.3 ° | |
| 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: | 1925 kg | 2903 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1515 kg | 2254 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%): | 2630 kg | |
| Tire size: | 245/35 ZR20; 305/30 ZR20 | 245/65 R17 |
| Wheel rims size: | 9 J x 20; 11.5 J x 20 | 7.0J x 17 |