1981 Jaguar XJS vs. 1978 Porsche 924
To start off, 1981 Jaguar XJS is newer by 3 year(s). Which means there will be less support and parts availability for 1978 Porsche 924. In addition, the cost of maintenance, including insurance, on 1978 Porsche 924 would be higher. At 5,344 cc (12 cylinders), 1981 Jaguar XJS is equipped with a bigger engine. In terms of performance, 1981 Jaguar XJS (299 HP @ 5500 RPM) has 175 more horse power than 1978 Porsche 924. (124 HP @ 5800 RPM). In normal driving conditions, 1981 Jaguar XJS should accelerate faster than 1978 Porsche 924. With that said, vehicle weight also plays an important factor in acceleration. 1981 Jaguar XJS weights approximately 527 kg more than 1978 Porsche 924. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 1981 Jaguar XJS (431 Nm @ 3000 RPM) has 267 more torque (in Nm) than 1978 Porsche 924. (164 Nm @ 3500 RPM). This means 1981 Jaguar XJS will have an easier job in driving up hills or pulling heavy equipment than 1978 Porsche 924. 1981 Jaguar XJS has automatic transmission and 1978 Porsche 924 has manual transmission. 1978 Porsche 924 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1981 Jaguar XJS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1981 Jaguar XJS | 1978 Porsche 924 | |
| Make | Jaguar | Porsche |
| Model | XJS | 924 |
| Year Released | 1981 | 1978 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5344 cc | 1984 cc |
| Engine Cylinders | 12 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 299 HP | 124 HP |
| Engine RPM | 5500 RPM | 5800 RPM |
| Torque | 431 Nm | 164 Nm |
| Torque RPM | 3000 RPM | 3500 RPM |
| Engine Compression Ratio | 12.5:1 | 9.3:1 |
| Top Speed | 240 km/hour | 192 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1707 kg | 1180 kg |
| Vehicle Length | 4880 mm | 4180 mm |
| Vehicle Width | 1780 mm | 1660 mm |
| Vehicle Height | 1270 mm | 1270 mm |
| Wheelbase Size | 2600 mm | 2410 mm |
| Fuel Tank Capacity | 90 L | 61 L |
