2005 Jaguar XK8 vs. 2003 Opel Vectra
To start off, 2005 Jaguar XK8 is newer by 2 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 4,195 cc (8 cylinders), 2005 Jaguar XK8 is equipped with a bigger engine. In terms of performance, 2005 Jaguar XK8 (294 HP @ 4000 RPM) has 169 more horse power than 2003 Opel Vectra. (125 HP @ 4000 RPM). In normal driving conditions, 2005 Jaguar XK8 should accelerate faster than 2003 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Jaguar XK8 weights approximately 150 kg more than 2003 Opel Vectra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Jaguar XK8 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 2005 Jaguar XK8. However, in wet, icy, snow, or gravel driving conditions, 2003 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, 2005 Jaguar XK8 (411 Nm @ 4000 RPM) has 131 more torque (in Nm) than 2003 Opel Vectra. (280 Nm @ 1500 RPM). This means 2005 Jaguar XK8 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Vectra. 2005 Jaguar XK8 has automatic transmission and 2003 Opel Vectra has manual transmission. 2003 Opel Vectra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Jaguar XK8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Jaguar XK8 | 2003 Opel Vectra | |
| Make | Jaguar | Opel |
| Model | XK8 | Vectra |
| Year Released | 2005 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 4195 cc | 2169 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 294 HP | 125 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 411 Nm | 280 Nm |
| Torque RPM | 4000 RPM | 1500 RPM |
| Engine Bore Size | 86 mm | 84 mm |
| Engine Stroke Size | 90.3 mm | 98 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 1710 kg | 1560 kg |
| Vehicle Length | 4770 mm | 4830 mm |
| Vehicle Width | 1840 mm | 1800 mm |
| Vehicle Height | 1300 mm | 1510 mm |
