2003 Jaguar XK vs. 2007 Jaguar XJ8
To start off, 2007 Jaguar XJ8 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Jaguar XK. In addition, the cost of maintenance, including insurance, on 2003 Jaguar XK would be higher. At 4,196 cc (8 cylinders), 2007 Jaguar XJ8 is equipped with a bigger engine. In terms of performance, 2007 Jaguar XJ8 (301 HP @ 6000 RPM) has 11 more horse power than 2003 Jaguar XK. (290 HP @ 6100 RPM) In normal driving conditions, 2007 Jaguar XJ8 should accelerate faster than 2003 Jaguar XK. With that said, vehicle weight also plays an important factor in acceleration. 2007 Jaguar XJ8 weights approximately 69 kg more than 2003 Jaguar XK. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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 Jaguar XJ8 (420 Nm @ 4100 RPM) has 27 more torque (in Nm) than 2003 Jaguar XK. (393 Nm @ 4250 RPM). This means 2007 Jaguar XJ8 will have an easier job in driving up hills or pulling heavy equipment than 2003 Jaguar XK.
Compare all specifications:
| 2003 Jaguar XK | 2007 Jaguar XJ8 | |
| Make | Jaguar | Jaguar |
| Model | XK | XJ8 |
| Year Released | 2003 | 2007 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3994 cc | 4196 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 290 HP | 301 HP |
| Engine RPM | 6100 RPM | 6000 RPM |
| Torque | 393 Nm | 420 Nm |
| Torque RPM | 4250 RPM | 4100 RPM |
| Engine Bore Size | 86 mm | 86 mm |
| Engine Stroke Size | 86 mm | 90.3 mm |
| Engine Compression Ratio | 10.7:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 251 km/hour | 250 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1570 kg | 1639 kg |
| Vehicle Length | 4770 mm | 5220 mm |
| Vehicle Width | 1840 mm | 1450 mm |
| Wheelbase Size | 3040 mm | 3170 mm |
| Fuel Consumption Overall | 9.5 L/100km | 11.1 L/100km |
| Fuel Tank Capacity | 75 L | 85 L |
