2005 Opel Vectra vs. 2008 Pontiac G8
To start off, 2008 Pontiac G8 is newer by 3 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 5,999 cc (8 cylinders), 2008 Pontiac G8 is equipped with a bigger engine. In terms of performance, 2008 Pontiac G8 (361 HP @ 5300 RPM) has 238 more horse power than 2005 Opel Vectra. (123 HP @ 5600 RPM) In normal driving conditions, 2008 Pontiac G8 should accelerate faster than 2005 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Vectra weights approximately 8 kg more than 2008 Pontiac G8.
Because 2008 Pontiac G8 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2008 Pontiac G8. However, in wet, icy, snow, or gravel driving conditions, 2005 Opel Vectra, being front wheel drive (FWD), will offer much better control with better grip. 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, 2008 Pontiac G8 (522 Nm @ 4400 RPM) has 357 more torque (in Nm) than 2005 Opel Vectra. (165 Nm @ 3800 RPM). This means 2008 Pontiac G8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Vectra.
Compare all specifications:
| 2005 Opel Vectra | 2008 Pontiac G8 | |
| Make | Opel | Pontiac |
| Model | Vectra | G8 |
| Year Released | 2005 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1794 cc | 5999 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 123 HP | 361 HP |
| Engine RPM | 5600 RPM | 5300 RPM |
| Torque | 165 Nm | 522 Nm |
| Torque RPM | 3800 RPM | 4400 RPM |
| Engine Bore Size | 80.5 mm | 102 mm |
| Engine Stroke Size | 88.2 mm | 92 mm |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1360 kg | 1352 kg |
| Vehicle Length | 4500 mm | 4990 mm |
| Vehicle Width | 1710 mm | 1910 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2640 mm | 2920 mm |
| Fuel Tank Capacity | 60 L | 72 L |
