1999 Jaguar XJ vs. 2011 Porsche 911
To start off, 2011 Porsche 911 is newer by 12 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, 2011 Porsche 911 (385 HP @ 6500 RPM) has 95 more horse power than 1999 Jaguar XJ. (290 HP @ 6100 RPM) In normal driving conditions, 2011 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 170 kg more than 2011 Porsche 911.
Because 2011 Porsche 911 is all wheel drive (AWD), it will have significant more traction and grip than 1999 Jaguar XJ. In wet, icy, snow, or gravel driving conditions, 2011 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, 2011 Porsche 911 (420 Nm @ 4400 RPM) has 27 more torque (in Nm) than 1999 Jaguar XJ. (393 Nm @ 4250 RPM). This means 2011 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1999 Jaguar XJ. 1999 Jaguar XJ has automatic transmission and 2011 Porsche 911 has manual transmission. 2011 Porsche 911 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1999 Jaguar XJ will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Jaguar XJ | 2011 Porsche 911 | |
| Make | Jaguar | Porsche |
| Model | XJ | 911 |
| Year Released | 1999 | 2011 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 3996 cc | 3800 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 290 HP | 385 HP |
| Engine RPM | 6100 RPM | 6500 RPM |
| Torque | 393 Nm | 420 Nm |
| Torque RPM | 4250 RPM | 4400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1710 kg | 1540 kg |
| Vehicle Length | 5160 mm | 4460 mm |
| Vehicle Width | 1800 mm | 1852 mm |
| Vehicle Height | 1310 mm | 1300 mm |
| Wheelbase Size | 2880 mm | 2350 mm |
| Fuel Tank Capacity | 87 L | 67 L |
