2003 Opel Vectra vs. 2007 Pontiac Grand Prix
To start off, 2007 Pontiac Grand Prix is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2003 Opel Vectra would be higher. At 3,786 cc (6 cylinders), 2007 Pontiac Grand Prix is equipped with a bigger engine. In terms of performance, 2007 Pontiac Grand Prix (200 HP) has 26 more horse power than 2003 Opel Vectra. (174 HP) In normal driving conditions, 2007 Pontiac Grand Prix should accelerate faster than 2003 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 131 kg more than 2007 Pontiac Grand Prix.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2003 Opel Vectra (370 Nm @ 1900 RPM) has 58 more torque (in Nm) than 2007 Pontiac Grand Prix. (312 Nm @ 4000 RPM). This means 2003 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2007 Pontiac Grand Prix.
Compare all specifications:
| 2003 Opel Vectra | 2007 Pontiac Grand Prix | |
| Make | Opel | Pontiac |
| Model | Vectra | Grand Prix |
| Year Released | 2003 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 3786 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 174 HP | 200 HP |
| Torque | 370 Nm | 312 Nm |
| Torque RPM | 1900 RPM | 4000 RPM |
| Engine Bore Size | 87.5 mm | 96.6 mm |
| Engine Stroke Size | 82 mm | 86.4 mm |
| Engine Compression Ratio | 18.5:1 | 9.4:1 |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1764 kg | 1633 kg |
| Vehicle Length | 4830 mm | 5040 mm |
| Vehicle Width | 1800 mm | 1880 mm |
| Vehicle Height | 1510 mm | 1430 mm |
| Wheelbase Size | 2840 mm | 2810 mm |
| Fuel Consumption | 5.8 L/100km | 7.8 L/100km |
| Fuel Consumption City | 11 L/100km | 11.8 L/100km |
| Fuel Consumption Overall | 7.7 L/100km | 9.8 L/100km |
| Fuel Tank Capacity | 60 L | 64 L |
