2007 GMC Sierra vs. 2008 Pontiac Grand Prix
To start off, 2008 Pontiac Grand Prix is newer by 1 year(s). Which means there will be less support and parts availability for 2007 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2007 GMC Sierra would be higher. At 5,357 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (315 HP) has 115 more horse power than 2008 Pontiac Grand Prix. (200 HP). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 2008 Pontiac Grand Prix. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 1083 kg more than 2008 Pontiac Grand Prix. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2008 Pontiac Grand Prix. In wet, icy, snow, or gravel driving conditions, 2007 GMC Sierra will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2007 GMC Sierra (458 Nm @ 4400 RPM) has 146 more torque (in Nm) than 2008 Pontiac Grand Prix. (312 Nm @ 4000 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2008 Pontiac Grand Prix.
Compare all specifications:
| 2007 GMC Sierra | 2008 Pontiac Grand Prix | |
| Make | GMC | Pontiac |
| Model | Sierra | Grand Prix |
| Year Released | 2007 | 2008 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5357 cc | 3790 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 315 HP | 200 HP |
| Torque | 458 Nm | 312 Nm |
| Torque RPM | 4400 RPM | 4000 RPM |
| Engine Bore Size | 96 mm | 96.5 mm |
| Engine Stroke Size | 92 mm | 86.4 mm |
| Engine Compression Ratio | 9.4:1 | 9.4:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2435 kg | 1352 kg |
| Vehicle Length | 6320 mm | 5040 mm |
| Vehicle Width | 2040 mm | 1830 mm |
| Vehicle Height | 1880 mm | 1430 mm |
| Wheelbase Size | 4010 mm | 2810 mm |
| Fuel Consumption Highway | 10.7 L/100km | 8.4 L/100km |
| Fuel Consumption City | 14.7 L/100km | 13.1 L/100km |
| Fuel Consumption Overall | 13.1 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 129 L | 64 L |
