2005 Jaguar XJ vs. 1991 Porsche 928
To start off, 2005 Jaguar XJ is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Porsche 928. In addition, the cost of maintenance, including insurance, on 1991 Porsche 928 would be higher. At 4,663 cc (8 cylinders), 1991 Porsche 928 is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (306 HP @ 5900 RPM) has 102 more horse power than 2005 Jaguar XJ. (204 HP @ 4000 RPM) In normal driving conditions, 1991 Porsche 928 should accelerate faster than 2005 Jaguar XJ. With that said, vehicle weight also plays an important factor in acceleration. 2005 Jaguar XJ weights approximately 129 kg more than 1991 Porsche 928.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2005 Jaguar XJ (435 Nm @ 1900 RPM) has 27 more torque (in Nm) than 1991 Porsche 928. (408 Nm @ 4100 RPM). This means 2005 Jaguar XJ will have an easier job in driving up hills or pulling heavy equipment than 1991 Porsche 928. 2005 Jaguar XJ has automatic transmission and 1991 Porsche 928 has manual transmission. 1991 Porsche 928 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Jaguar XJ will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Jaguar XJ | 1991 Porsche 928 | |
| Make | Jaguar | Porsche |
| Model | XJ | 928 |
| Year Released | 2005 | 1991 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2720 cc | 4663 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 204 HP | 306 HP |
| Engine RPM | 4000 RPM | 5900 RPM |
| Torque | 435 Nm | 408 Nm |
| Torque RPM | 1900 RPM | 4100 RPM |
| Engine Compression Ratio | 17.3:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 220 km/hour | 319 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1659 kg | 1530 kg |
| Vehicle Length | 5100 mm | 4530 mm |
| Vehicle Width | 1870 mm | 2060 mm |
| Vehicle Height | 1450 mm | 1290 mm |
| Wheelbase Size | 3040 mm | 2510 mm |
| Fuel Tank Capacity | 85 L | 76 L |
