1998 Jaguar XJ8 vs. 1991 Porsche 911
To start off, 1998 Jaguar XJ8 is newer by 7 year(s). Which means there will be less support and parts availability for 1991 Porsche 911. In addition, the cost of maintenance, including insurance, on 1991 Porsche 911 would be higher. At 3,981 cc (8 cylinders), 1998 Jaguar XJ8 is equipped with a bigger engine. In terms of performance, 1998 Jaguar XJ8 (290 HP @ 6100 RPM) has 62 more horse power than 1991 Porsche 911. (228 HP @ 5900 RPM). In normal driving conditions, 1998 Jaguar XJ8 should accelerate faster than 1991 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 1998 Jaguar XJ8 weights approximately 615 kg more than 1991 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1998 Jaguar XJ8 (525 Nm @ 4250 RPM) has 239 more torque (in Nm) than 1991 Porsche 911. (286 Nm @ 4800 RPM). This means 1998 Jaguar XJ8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Porsche 911.
Compare all specifications:
| 1998 Jaguar XJ8 | 1991 Porsche 911 | |
| Make | Jaguar | Porsche |
| Model | XJ8 | 911 |
| Year Released | 1998 | 1991 |
| Body Type | Sedan | Roadster |
| Engine Position | Front | Rear |
| Engine Size | 3981 cc | 3163 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 290 HP | 228 HP |
| Engine RPM | 6100 RPM | 5900 RPM |
| Torque | 525 Nm | 286 Nm |
| Torque RPM | 4250 RPM | 4800 RPM |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1790 kg | 1175 kg |
| Vehicle Length | 5030 mm | 4300 mm |
| Vehicle Width | 1800 mm | 1660 mm |
| Vehicle Height | 1350 mm | 1260 mm |
