1991 Jaguar XJS vs. 1999 Porsche Boxster
To start off, 1999 Porsche Boxster is newer by 8 year(s). Which means there will be less support and parts availability for 1991 Jaguar XJS. In addition, the cost of maintenance, including insurance, on 1991 Jaguar XJS would be higher. At 3,590 cc (6 cylinders), 1991 Jaguar XJS is equipped with a bigger engine. In terms of performance, 1999 Porsche Boxster (249 HP @ 6250 RPM) has 32 more horse power than 1991 Jaguar XJS. (217 HP @ 5300 RPM) In normal driving conditions, 1999 Porsche Boxster should accelerate faster than 1991 Jaguar XJS. With that said, vehicle weight also plays an important factor in acceleration. 1991 Jaguar XJS weights approximately 372 kg more than 1999 Porsche Boxster.
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 XJS (325 Nm @ 4000 RPM) has 20 more torque (in Nm) than 1999 Porsche Boxster. (305 Nm @ 4500 RPM). This means 1991 Jaguar XJS will have an easier job in driving up hills or pulling heavy equipment than 1999 Porsche Boxster.
Compare all specifications:
| 1991 Jaguar XJS | 1999 Porsche Boxster | |
| Make | Jaguar | Porsche |
| Model | XJS | Boxster |
| Year Released | 1991 | 1999 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 3590 cc | 3179 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 217 HP | 249 HP |
| Engine RPM | 5300 RPM | 6250 RPM |
| Torque | 325 Nm | 305 Nm |
| Torque RPM | 4000 RPM | 4500 RPM |
| Engine Bore Size | 91 mm | 93.1 mm |
| Engine Stroke Size | 92 mm | 78 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1632 kg | 1260 kg |
| Vehicle Length | 4880 mm | 4320 mm |
| Vehicle Width | 1800 mm | 1780 mm |
| Vehicle Height | 1270 mm | 1300 mm |
| Wheelbase Size | 2600 mm | 2360 mm |
