2004 Jaguar XK vs. 2007 BMW 645
To start off, 2007 BMW 645 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Jaguar XK. In addition, the cost of maintenance, including insurance, on 2004 Jaguar XK would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 Jaguar XK (390 HP @ 6100 RPM) has 62 more horse power than 2007 BMW 645. (328 HP @ 6100 RPM). In normal driving conditions, 2004 Jaguar XK should accelerate faster than 2007 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2004 Jaguar XK weights approximately 18 kg more than 2007 BMW 645. 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, 2004 Jaguar XK (541 Nm) has 91 more torque (in Nm) than 2007 BMW 645. (450 Nm). This means 2004 Jaguar XK will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 645.
Compare all specifications:
| 2004 Jaguar XK | 2007 BMW 645 | |
| Make | Jaguar | BMW |
| Model | XK | 645 |
| Year Released | 2004 | 2007 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4194 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 390 HP | 328 HP |
| Engine RPM | 6100 RPM | 6100 RPM |
| Torque | 541 Nm | 450 Nm |
| Engine Bore Size | 86 mm | 92 mm |
| Engine Stroke Size | 90 mm | 82.7 mm |
| Engine Compression Ratio | 9.1:1 | 10.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1833 kg | 1815 kg |
| Vehicle Length | 4770 mm | 4830 mm |
| Vehicle Width | 1800 mm | 1860 mm |
| Vehicle Height | 1290 mm | 1380 mm |
| Wheelbase Size | 2590 mm | 2790 mm |
| Fuel Consumption Overall | 13.1 L/100km | 13 L/100km |
| Fuel Tank Capacity | 75 L | 70 L |
