1979 BMW 728 vs. 1990 Jaguar XJS
To start off, 1990 Jaguar XJS is newer by 11 year(s). Which means there will be less support and parts availability for 1979 BMW 728. In addition, the cost of maintenance, including insurance, on 1979 BMW 728 would be higher. At 5,343 cc (12 cylinders), 1990 Jaguar XJS is equipped with a bigger engine. In terms of performance, 1990 Jaguar XJS (291 HP @ 5500 RPM) has 110 more horse power than 1979 BMW 728. (181 HP @ 5800 RPM) In normal driving conditions, 1990 Jaguar XJS should accelerate faster than 1979 BMW 728. With that said, vehicle weight also plays an important factor in acceleration. 1990 Jaguar XJS weights approximately 462 kg more than 1979 BMW 728. 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, 1990 Jaguar XJS (440 Nm @ 3250 RPM) has 200 more torque (in Nm) than 1979 BMW 728. (240 Nm @ 4200 RPM). This means 1990 Jaguar XJS will have an easier job in driving up hills or pulling heavy equipment than 1979 BMW 728.
Compare all specifications:
| 1979 BMW 728 | 1990 Jaguar XJS | |
| Make | BMW | Jaguar |
| Model | 728 | XJS |
| Year Released | 1979 | 1990 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2788 cc | 5343 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Horse Power | 181 HP | 291 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 240 Nm | 440 Nm |
| Torque RPM | 4200 RPM | 3250 RPM |
| Engine Bore Size | 86 mm | 90 mm |
| Engine Stroke Size | 80 mm | 70 mm |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1470 kg | 1932 kg |
| Vehicle Length | 4870 mm | 4770 mm |
| Vehicle Width | 1810 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1260 mm |
| Wheelbase Size | 2800 mm | 2600 mm |
| Fuel Tank Capacity | 100 L | 82 L |
