Comparison Porsche 911 (991) Carrera S 3.8 (400 Hp) & GMC Sierra 2500HD IV (GMTK2XX) Double Cab Standard Box 6.0 V8 (301 Hp) Automatic CNG
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| Brand: | Porsche | GMC |
| Model: | 911 | Sierra 2500HD |
| Generation: | 911 (991) | Sierra 2500HD IV (GMTK2XX) Double Cab Standard Box |
| Engine / modification: | Carrera S 3.8 (400 Hp) | 6.0 V8 (301 Hp) Automatic CNG |
| Production start: | 2011 year | 2015 year |
| Production end: | 2016 year | |
| Coupe type: | Coupe | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 2+2 | 5 |
| Fuel consumption / economy - urban: | 13.3 l/100 km | |
| Fuel consumption / economy - extra urban: | 7.3 l/100 km | |
| Fuel consumption / economy - combined: | 9.5 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol / CNG |
| Fuel tank volume: | 64 l | 136 l |
| Emission standard: | EURO VI | |
| CO2 emissions: | 223 g/km | |
| Power: | 400 hp | 301 hp |
| Max power in: | 7400 rpm. | 5000 rpm. |
| Maximum speed: | 304 km/h | |
| Acceleration from 0 to 100 km/h: | 4.5 sec | |
| Torque: | 440 Nm/5600 rpm. | 452 Nm @ 4200 rpm. |
| Model Engine: | Vortec LC8 | |
| Engine position: | Rear, longitudinal | |
| Engine displacement: | 3800 cm3 | 5967 cm3 |
| Engine oil capacity: | 5.7 l | |
| Coolant: | 15.5 l | |
| Fuel System: | Direct injection | |
| Maximum engine speed: | 6000 rpm. | |
| CNG cylinder capacity: | 67 kg | |
| Aspiration / Turbine: | Naturally aspirated engine | |
| Position of cylinders: | Boxer | |
| Valvetrain: | OHV, VVT | |
| Number of cylinders: | 6 | 8 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 12.5 | 9.6 |
| Piston Stroke: | 77.5 mm | 92 mm |
| Cylinder Bore: | 102 mm | 101.6 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (manual transmission): | 7 | |
| Length: | 4491 mm | 5842 mm |
| Width: | 1808 mm | |
| Width including mirrors: | 2045 mm | |
| Height: | 1295 mm | 1984 mm |
| Wheelbase: | 2450 mm | 3662 mm |
| Front track: | 1538 mm | 1748 mm |
| Rear (Back) track: | 1516 mm | 1709 mm |
| Ride height(clearance): | 218 mm | |
| Minimum volume of Luggage (trunk): | 340 l | |
| Front suspension: | Independent, Spring McPherson, with stabilizer | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 1830 kg | |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Ventilated discs | |
| Kerb Weight: | 1415 kg | |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls |
| Minimum turning circle (turning diameter): | 15 m | |
| Permitted trailer load with brakes (12%): | 4218 kg | |
| Tire size: | 245/35 ZR20; 295/30 ZR20 | 245/75 R17; 265/70 R17; 265/70 R18; 265/60 R20 |
| Wheel rims size: | 8.5 J x 20; 11 J x 20 | 7.5J x 17; 8J x 18; 8.5J x 20 |