2005 Jaguar XJ vs. 1999 Porsche 911
To start off, 2005 Jaguar XJ is newer by 6 year(s). Which means there will be less support and parts availability for 1999 Porsche 911. In addition, the cost of maintenance, including insurance, on 1999 Porsche 911 would be higher. At 4,196 cc (8 cylinders), 2005 Jaguar XJ is equipped with a bigger engine. In terms of performance, 1999 Porsche 911 (414 HP @ 6000 RPM) has 120 more horse power than 2005 Jaguar XJ. (294 HP @ 6100 RPM) In normal driving conditions, 1999 Porsche 911 should accelerate faster than 2005 Jaguar XJ. With that said, vehicle weight also plays an important factor in acceleration. 2005 Jaguar XJ weights approximately 254 kg more than 1999 Porsche 911.
Because 1999 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Jaguar XJ. 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) has 149 more torque (in Nm) than 2005 Jaguar XJ. (411 Nm). This means 1999 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2005 Jaguar XJ. 2005 Jaguar XJ has automatic transmission and 1999 Porsche 911 has manual transmission. 1999 Porsche 911 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 | 1999 Porsche 911 | |
| Make | Jaguar | Porsche |
| Model | XJ | 911 |
| Year Released | 2005 | 1999 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 4196 cc | 3595 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 294 HP | 414 HP |
| Engine RPM | 6100 RPM | 6000 RPM |
| Torque | 411 Nm | 560 Nm |
| Engine Bore Size | 86 mm | 100 mm |
| Engine Stroke Size | 90 mm | 76.4 mm |
| Engine Compression Ratio | 11.0:1 | 9.4:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1794 kg | 1540 kg |
| Vehicle Length | 5220 mm | 4440 mm |
| Vehicle Width | 1950 mm | 1840 mm |
| Vehicle Height | 1460 mm | 1300 mm |
| Wheelbase Size | 3040 mm | 2360 mm |
| Fuel Tank Capacity | 85 L | 64 L |
