2007 Jaguar XJ8 vs. 2003 Porsche Cayenne
To start off, 2007 Jaguar XJ8 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Porsche Cayenne. In addition, the cost of maintenance, including insurance, on 2003 Porsche Cayenne would be higher. At 4,511 cc (8 cylinders), 2003 Porsche Cayenne is equipped with a bigger engine. In terms of performance, 2003 Porsche Cayenne (335 HP @ 6000 RPM) has 34 more horse power than 2007 Jaguar XJ8. (301 HP @ 6000 RPM) In normal driving conditions, 2003 Porsche Cayenne should accelerate faster than 2007 Jaguar XJ8. With that said, vehicle weight also plays an important factor in acceleration. 2003 Porsche Cayenne weights approximately 683 kg more than 2007 Jaguar XJ8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Porsche Cayenne is four wheel drive (4WD), it will have significant more traction and grip than 2007 Jaguar XJ8. In wet, icy, snow, or gravel driving conditions, 2003 Porsche Cayenne 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, both vehicles can yield 420 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles. 2007 Jaguar XJ8 has automatic transmission and 2003 Porsche Cayenne has manual transmission. 2003 Porsche Cayenne will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Jaguar XJ8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Jaguar XJ8 | 2003 Porsche Cayenne | |
| Make | Jaguar | Porsche |
| Model | XJ8 | Cayenne |
| Year Released | 2007 | 2003 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4196 cc | 4511 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 301 HP | 335 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 420 Nm | 420 Nm |
| Torque RPM | 4100 RPM | 2500 RPM |
| Engine Bore Size | 86 mm | 93 mm |
| Engine Stroke Size | 90.3 mm | 83 mm |
| Engine Compression Ratio | 11.0:1 | 11.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 6.6 seconds | 6.8 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1639 kg | 2322 kg |
| Vehicle Length | 5220 mm | 4790 mm |
| Vehicle Width | 1450 mm | 1930 mm |
| Wheelbase Size | 3170 mm | 2860 mm |
| Fuel Consumption Overall | 11.1 L/100km | 15.8 L/100km |
| Fuel Tank Capacity | 85 L | 100 L |
