1991 Jaguar XJR-15 vs. 2007 Porsche 911
To start off, 2007 Porsche 911 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Jaguar XJR-15. In addition, the cost of maintenance, including insurance, on 1991 Jaguar XJR-15 would be higher. At 5,993 cc (12 cylinders), 1991 Jaguar XJR-15 is equipped with a bigger engine. In terms of performance, 1991 Jaguar XJR-15 (450 HP @ 6250 RPM) has 134 more horse power than 2007 Porsche 911. (316 HP @ 4250 RPM). In normal driving conditions, 1991 Jaguar XJR-15 should accelerate faster than 2007 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2007 Porsche 911 weights approximately 355 kg more than 1991 Jaguar XJR-15.
Because 2007 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Jaguar XJR-15. In wet, icy, snow, or gravel driving conditions, 2007 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, 1991 Jaguar XJR-15 (570 Nm @ 4500 RPM) has 200 more torque (in Nm) than 2007 Porsche 911. (370 Nm @ 4250 RPM). This means 1991 Jaguar XJR-15 will have an easier job in driving up hills or pulling heavy equipment than 2007 Porsche 911. 2007 Porsche 911 has automatic transmission and 1991 Jaguar XJR-15 has manual transmission. 1991 Jaguar XJR-15 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Porsche 911 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Jaguar XJR-15 | 2007 Porsche 911 | |
| Make | Jaguar | Porsche |
| Model | XJR-15 | 911 |
| Year Released | 1991 | 2007 |
| Body Type | Coupe | Coupe |
| Engine Position | Middle | Rear |
| Engine Size | 5993 cc | 3596 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 450 HP | 316 HP |
| Engine RPM | 6250 RPM | 4250 RPM |
| Torque | 570 Nm | 370 Nm |
| Torque RPM | 4500 RPM | 4250 RPM |
| Engine Bore Size | 90 mm | 96.1 mm |
| Engine Stroke Size | 78.5 mm | 82.8 mm |
| Fuel Type | Gasoline | Gasoline |
| Acceleration 0-100mph | 3.9 seconds | 5 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 1 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1050 kg | 1405 kg |
| Vehicle Length | 4810 mm | 4440 mm |
| Vehicle Width | 1910 mm | 1780 mm |
| Vehicle Height | 1110 mm | 1310 mm |
| Wheelbase Size | 2870 mm | 2360 mm |
| Fuel Tank Capacity | 90 L | 64 L |
