1999 Jaguar XJ vs. 2006 Porsche 911
To start off, 2006 Porsche 911 is newer by 7 year(s). Which means there will be less support and parts availability for 1999 Jaguar XJ. In addition, the cost of maintenance, including insurance, on 1999 Jaguar XJ would be higher. At 3,996 cc (8 cylinders), 1999 Jaguar XJ is equipped with a bigger engine. In terms of performance, 2006 Porsche 911 (350 HP @ 6600 RPM) has 60 more horse power than 1999 Jaguar XJ. (290 HP @ 6100 RPM) In normal driving conditions, 2006 Porsche 911 should accelerate faster than 1999 Jaguar XJ. With that said, vehicle weight also plays an important factor in acceleration. 1999 Jaguar XJ weights approximately 150 kg more than 2006 Porsche 911.
Because 2006 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1999 Jaguar XJ. In wet, icy, snow, or gravel driving conditions, 2006 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, 2006 Porsche 911 (400 Nm @ 4600 RPM) has 7 more torque (in Nm) than 1999 Jaguar XJ. (393 Nm @ 4250 RPM). This means 2006 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1999 Jaguar XJ.
Compare all specifications:
| 1999 Jaguar XJ | 2006 Porsche 911 | |
| Make | Jaguar | Porsche |
| Model | XJ | 911 |
| Year Released | 1999 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 3996 cc | 3824 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 290 HP | 350 HP |
| Engine RPM | 6100 RPM | 6600 RPM |
| Torque | 393 Nm | 400 Nm |
| Torque RPM | 4250 RPM | 4600 RPM |
| Engine Bore Size | 86 mm | 99 mm |
| Engine Stroke Size | 86 mm | 82.8 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1710 kg | 1560 kg |
| Vehicle Length | 5160 mm | 4430 mm |
| Vehicle Width | 1800 mm | 1860 mm |
| Vehicle Height | 1310 mm | 1310 mm |
| Wheelbase Size | 2880 mm | 2360 mm |
| Fuel Tank Capacity | 87 L | 67 L |
