2005 Jaguar XJ vs. 1991 Jaguar XJR-15
To start off, 2005 Jaguar XJ is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Jaguar XJR-15. In addition, the cost of maintenance, including insurance, on 1991 Jaguar XJR-15 would be higher. At 5,993 cc (12 cylinders), 1991 Jaguar XJR-15 is equipped with a bigger engine. In terms of performance, 1991 Jaguar XJR-15 (450 HP @ 6250 RPM) has 156 more horse power than 2005 Jaguar XJ. (294 HP @ 6100 RPM) In normal driving conditions, 1991 Jaguar XJR-15 should accelerate faster than 2005 Jaguar XJ. With that said, vehicle weight also plays an important factor in acceleration. 2005 Jaguar XJ weights approximately 690 kg more than 1991 Jaguar XJR-15.
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, 1991 Jaguar XJR-15 (570 Nm) has 159 more torque (in Nm) than 2005 Jaguar XJ. (411 Nm). This means 1991 Jaguar XJR-15 will have an easier job in driving up hills or pulling heavy equipment than 2005 Jaguar XJ. 2005 Jaguar XJ has automatic transmission and 1991 Jaguar XJR-15 has manual transmission. 1991 Jaguar XJR-15 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Jaguar XJ will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Jaguar XJ | 1991 Jaguar XJR-15 | |
| Make | Jaguar | Jaguar |
| Model | XJ | XJR-15 |
| Year Released | 2005 | 1991 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 4195 cc | 5993 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 294 HP | 450 HP |
| Engine RPM | 6100 RPM | 6250 RPM |
| Torque | 411 Nm | 570 Nm |
| Engine Bore Size | 86 mm | 90 mm |
| Engine Stroke Size | 90 mm | 78.5 mm |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 1 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1740 kg | 1050 kg |
| Vehicle Length | 5100 mm | 4810 mm |
| Vehicle Width | 1950 mm | 1910 mm |
| Vehicle Height | 1450 mm | 1110 mm |
| Wheelbase Size | 3040 mm | 2870 mm |
| Fuel Tank Capacity | 85 L | 90 L |
