1981 Alfa Romeo Spider vs. 2005 Jaguar XJR
To start off, 2005 Jaguar XJR is newer by 24 year(s). Which means there will be less support and parts availability for 1981 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 1981 Alfa Romeo Spider would be higher. At 4,196 cc (8 cylinders), 2005 Jaguar XJR is equipped with a bigger engine. In terms of performance, 2005 Jaguar XJR (390 HP @ 6100 RPM) has 287 more horse power than 1981 Alfa Romeo Spider. (103 HP @ 5500 RPM) In normal driving conditions, 2005 Jaguar XJR should accelerate faster than 1981 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2005 Jaguar XJR weights approximately 708 kg more than 1981 Alfa Romeo Spider. 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, 2005 Jaguar XJR (554 Nm @ 3500 RPM) has 409 more torque (in Nm) than 1981 Alfa Romeo Spider. (145 Nm @ 4500 RPM). This means 2005 Jaguar XJR will have an easier job in driving up hills or pulling heavy equipment than 1981 Alfa Romeo Spider.
Compare all specifications:
| 1981 Alfa Romeo Spider | 2005 Jaguar XJR | |
| Make | Alfa Romeo | Jaguar |
| Model | Spider | XJR |
| Year Released | 1981 | 2005 |
| Body Type | Roadster | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1570 cc | 4196 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 103 HP | 390 HP |
| Engine RPM | 5500 RPM | 6100 RPM |
| Torque | 145 Nm | 554 Nm |
| Torque RPM | 4500 RPM | 3500 RPM |
| Engine Bore Size | 78 mm | 86 mm |
| Engine Stroke Size | 82 mm | 90.3 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1000 kg | 1708 kg |
| Vehicle Length | 4130 mm | 5090 mm |
| Vehicle Width | 1640 mm | 1870 mm |
| Vehicle Height | 1300 mm | 1450 mm |
| Wheelbase Size | 2260 mm | 3040 mm |
