1971 Innocenti J4 vs. 2005 Jaguar XJ
To start off, 2005 Jaguar XJ is newer by 34 year(s). Which means there will be less support and parts availability for 1971 Innocenti J4. In addition, the cost of maintenance, including insurance, on 1971 Innocenti J4 would be higher. At 4,195 cc (8 cylinders), 2005 Jaguar XJ is equipped with a bigger engine. In terms of performance, 2005 Jaguar XJ (390 HP @ 6000 RPM) has 334 more horse power than 1971 Innocenti J4. (56 HP @ 5500 RPM) In normal driving conditions, 2005 Jaguar XJ should accelerate faster than 1971 Innocenti J4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Jaguar XJ weights approximately 855 kg more than 1971 Innocenti J4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Jaguar XJ is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2005 Jaguar XJ. However, in wet, icy, snow, or gravel driving conditions, 1971 Innocenti J4, being front wheel drive (FWD), will offer much better control with better grip. 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 (525 Nm) has 441 more torque (in Nm) than 1971 Innocenti J4. (84 Nm). This means 2005 Jaguar XJ will have an easier job in driving up hills or pulling heavy equipment than 1971 Innocenti J4. 2005 Jaguar XJ has automatic transmission and 1971 Innocenti J4 has manual transmission. 1971 Innocenti J4 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:
| 1971 Innocenti J4 | 2005 Jaguar XJ | |
| Make | Innocenti | Jaguar |
| Model | J4 | XJ |
| Year Released | 1971 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1098 cc | 4195 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 56 HP | 390 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 84 Nm | 525 Nm |
| Engine Bore Size | 64.6 mm | 86.1 mm |
| Engine Stroke Size | 83.7 mm | 90 mm |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 880 kg | 1735 kg |
| Vehicle Length | 3720 mm | 5100 mm |
| Vehicle Width | 1540 mm | 1950 mm |
| Vehicle Height | 1380 mm | 1450 mm |
| Wheelbase Size | 2380 mm | 2920 mm |
