2008 Jaguar XJ vs. 2005 Porsche 911
To start off, 2008 Jaguar XJ is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Porsche 911. In addition, the cost of maintenance, including insurance, on 2005 Porsche 911 would be higher. At 4,195 cc (8 cylinders), 2008 Jaguar XJ is equipped with a bigger engine. In terms of performance, 2008 Jaguar XJ (400 HP @ 6100 RPM) has 85 more horse power than 2005 Porsche 911. (315 HP @ 6800 RPM). In normal driving conditions, 2008 Jaguar XJ should accelerate faster than 2005 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2008 Jaguar XJ weights approximately 100 kg more than 2005 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Jaguar XJ. In wet, icy, snow, or gravel driving conditions, 2005 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, 2008 Jaguar XJ (553 Nm @ 4100 RPM) has 183 more torque (in Nm) than 2005 Porsche 911. (370 Nm @ 4250 RPM). This means 2008 Jaguar XJ will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 911.
Compare all specifications:
| 2008 Jaguar XJ | 2005 Porsche 911 | |
| Make | Jaguar | Porsche |
| Model | XJ | 911 |
| Year Released | 2008 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 4195 cc | 3596 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 400 HP | 315 HP |
| Engine RPM | 6100 RPM | 6800 RPM |
| Torque | 553 Nm | 370 Nm |
| Torque RPM | 4100 RPM | 4250 RPM |
| Engine Bore Size | 86 mm | 96 mm |
| Engine Stroke Size | 90.3 mm | 82.8 mm |
| Engine Compression Ratio | 9.1:1 | 11.3:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 250 km/hour | 280 km/hour |
| Acceleration 0-100mph | 5.3 seconds | 5.3 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1665 kg | 1565 kg |
| Vehicle Length | 5100 mm | 4440 mm |
| Vehicle Width | 1450 mm | 1840 mm |
| Wheelbase Size | 3040 mm | 2360 mm |
| Fuel Consumption Overall | 12.3 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 85 L | 64 L |
