2006 BMW 645 vs. 2013 Jaguar XJ
To start off, 2013 Jaguar XJ is newer by 7 year(s). Which means there will be less support and parts availability for 2006 BMW 645. In addition, the cost of maintenance, including insurance, on 2006 BMW 645 would be higher. At 5,000 cc (4 cylinders), 2013 Jaguar XJ is equipped with a bigger engine. In terms of performance, 2013 Jaguar XJ (503 HP @ 6500 RPM) has 175 more horse power than 2006 BMW 645. (328 HP @ 6100 RPM) In normal driving conditions, 2013 Jaguar XJ should accelerate faster than 2006 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2013 Jaguar XJ weights approximately 44 kg more than 2006 BMW 645. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 Jaguar XJ is all wheel drive (AWD), it will have significant more traction and grip than 2006 BMW 645. In wet, icy, snow, or gravel driving conditions, 2013 Jaguar XJ will offer significantly more control. 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, 2013 Jaguar XJ (625 Nm @ 5000 RPM) has 175 more torque (in Nm) than 2006 BMW 645. (450 Nm @ 3600 RPM). This means 2013 Jaguar XJ will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 645.
Compare all specifications:
| 2006 BMW 645 | 2013 Jaguar XJ | |
| Make | BMW | Jaguar |
| Model | 645 | XJ |
| Year Released | 2006 | 2013 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 5000 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | W |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 328 HP | 503 HP |
| Engine RPM | 6100 RPM | 6500 RPM |
| Torque | 450 Nm | 625 Nm |
| Torque RPM | 3600 RPM | 5000 RPM |
| Engine Bore Size | 92 mm | 92 mm |
| Engine Stroke Size | 83 mm | 93 mm |
| Engine Compression Ratio | 10.0:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline / Electric Hybrid |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 4.9 seconds |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | CVT |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1836 kg | 1880 kg |
| Vehicle Length | 4830 mm | 5252 mm |
| Vehicle Width | 1860 mm | 2105 mm |
| Vehicle Height | 1380 mm | 1456 mm |
| Wheelbase Size | 2790 mm | 3157 mm |
