1973 Innocenti J4 vs. 2004 Rover 45
To start off, 2004 Rover 45 is newer by 31 year(s). Which means there will be less support and parts availability for 1973 Innocenti J4. In addition, the cost of maintenance, including insurance, on 1973 Innocenti J4 would be higher. At 1,994 cc (4 cylinders), 2004 Rover 45 is equipped with a bigger engine. In terms of performance, 2004 Rover 45 (100 HP @ 4200 RPM) has 44 more horse power than 1973 Innocenti J4. (56 HP @ 5500 RPM) In normal driving conditions, 2004 Rover 45 should accelerate faster than 1973 Innocenti J4. With that said, vehicle weight also plays an important factor in acceleration. 2004 Rover 45 weights approximately 425 kg more than 1973 Innocenti J4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear 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, 2004 Rover 45 (240 Nm @ 2000 RPM) has 157 more torque (in Nm) than 1973 Innocenti J4. (83 Nm @ 2500 RPM). This means 2004 Rover 45 will have an easier job in driving up hills or pulling heavy equipment than 1973 Innocenti J4.
Compare all specifications:
| 1973 Innocenti J4 | 2004 Rover 45 | |
| Make | Innocenti | Rover |
| Model | J4 | 45 |
| Year Released | 1973 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 1097 cc | 1994 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 56 HP | 100 HP |
| Engine RPM | 5500 RPM | 4200 RPM |
| Torque | 83 Nm | 240 Nm |
| Torque RPM | 2500 RPM | 2000 RPM |
| Engine Bore Size | 64.6 mm | 84.5 mm |
| Engine Stroke Size | 83.7 mm | 88.9 mm |
| Engine Compression Ratio | 21.5:1 | 19.5:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 880 kg | 1305 kg |
| Vehicle Length | 3720 mm | 4370 mm |
| Vehicle Width | 1540 mm | 1700 mm |
| Vehicle Height | 1380 mm | 1400 mm |
| Wheelbase Size | 2380 mm | 2560 mm |
