1985 Jaguar XJS vs. 1999 Porsche 911
To start off, 1999 Porsche 911 is newer by 14 year(s). Which means there will be less support and parts availability for 1985 Jaguar XJS. In addition, the cost of maintenance, including insurance, on 1985 Jaguar XJS would be higher. At 5,343 cc (12 cylinders), 1985 Jaguar XJS is equipped with a bigger engine. In terms of performance, 1999 Porsche 911 (414 HP @ 6000 RPM) has 134 more horse power than 1985 Jaguar XJS. (280 HP @ 5500 RPM) In normal driving conditions, 1999 Porsche 911 should accelerate faster than 1985 Jaguar XJS. With that said, vehicle weight also plays an important factor in acceleration. 1985 Jaguar XJS weights approximately 240 kg more than 1999 Porsche 911.
Because 1999 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1985 Jaguar XJS. In wet, icy, snow, or gravel driving conditions, 1999 Porsche 911 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, 1999 Porsche 911 (560 Nm @ 2700 RPM) has 128 more torque (in Nm) than 1985 Jaguar XJS. (432 Nm @ 3250 RPM). This means 1999 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1985 Jaguar XJS.
Compare all specifications:
| 1985 Jaguar XJS | 1999 Porsche 911 | |
| Make | Jaguar | Porsche |
| Model | XJS | 911 |
| Year Released | 1985 | 1999 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 5343 cc | 3595 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 280 HP | 414 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 432 Nm | 560 Nm |
| Torque RPM | 3250 RPM | 2700 RPM |
| Engine Compression Ratio | 11.5:1 | 9.4:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1780 kg | 1540 kg |
| Vehicle Length | 4770 mm | 4440 mm |
| Vehicle Width | 1800 mm | 1840 mm |
| Vehicle Height | 1270 mm | 1300 mm |
| Wheelbase Size | 2600 mm | 2360 mm |
| Fuel Tank Capacity | 82 L | 64 L |
