2005 Opel Vectra vs. 2007 Pontiac Grand Prix
To start off, 2007 Pontiac Grand Prix is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2005 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 2005 Opel Vectra. (174 HP) In normal driving conditions, 2007 Pontiac Grand Prix should accelerate faster than 2005 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Pontiac Grand Prix weights approximately 48 kg more than 2005 Opel Vectra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2007 Pontiac Grand Prix (312 Nm @ 4000 RPM) has 47 more torque (in Nm) than 2005 Opel Vectra. (265 Nm @ 2500 RPM). This means 2007 Pontiac Grand Prix will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Vectra. 2007 Pontiac Grand Prix has automatic transmission and 2005 Opel Vectra has manual transmission. 2005 Opel Vectra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Pontiac Grand Prix will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Opel Vectra | 2007 Pontiac Grand Prix | |
| Make | Opel | Pontiac |
| Model | Vectra | Grand Prix |
| Year Released | 2005 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1998 cc | 3786 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 174 HP | 200 HP |
| Torque | 265 Nm | 312 Nm |
| Torque RPM | 2500 RPM | 4000 RPM |
| Engine Bore Size | 86 mm | 96.6 mm |
| Engine Stroke Size | 86 mm | 86.4 mm |
| Engine Compression Ratio | 9.5:1 | 9.4:1 |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1585 kg | 1633 kg |
| Vehicle Length | 4830 mm | 5040 mm |
| Vehicle Width | 1800 mm | 1880 mm |
| Vehicle Height | 1510 mm | 1430 mm |
| Wheelbase Size | 2620 mm | 2810 mm |
| Fuel Consumption Overall | 9.2 L/100km | 9.8 L/100km |
| Fuel Tank Capacity | 60 L | 64 L |
