1989 Jaguar XJS vs. 1991 Jaguar XJR-15
To start off, 1991 Jaguar XJR-15 is newer by 2 year(s). Which means there will be less support and parts availability for 1989 Jaguar XJS. In addition, the cost of maintenance, including insurance, on 1989 Jaguar XJS 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 159 more horse power than 1989 Jaguar XJS. (291 HP @ 5500 RPM) In normal driving conditions, 1991 Jaguar XJR-15 should accelerate faster than 1989 Jaguar XJS. With that said, vehicle weight also plays an important factor in acceleration. 1989 Jaguar XJS weights approximately 880 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 @ 4500 RPM) has 130 more torque (in Nm) than 1989 Jaguar XJS. (440 Nm @ 3250 RPM). This means 1991 Jaguar XJR-15 will have an easier job in driving up hills or pulling heavy equipment than 1989 Jaguar XJS.
Compare all specifications:
| 1989 Jaguar XJS | 1991 Jaguar XJR-15 | |
| Make | Jaguar | Jaguar |
| Model | XJS | XJR-15 |
| Year Released | 1989 | 1991 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 5343 cc | 5993 cc |
| Engine Cylinders | 12 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 291 HP | 450 HP |
| Engine RPM | 5500 RPM | 6250 RPM |
| Torque | 440 Nm | 570 Nm |
| Torque RPM | 3250 RPM | 4500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 1 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1930 kg | 1050 kg |
| Vehicle Length | 4770 mm | 4810 mm |
| Vehicle Width | 1800 mm | 1910 mm |
| Vehicle Height | 1260 mm | 1110 mm |
| Wheelbase Size | 2600 mm | 2870 mm |
| Fuel Tank Capacity | 82 L | 90 L |
