2000 Caterham C21 vs. 1971 Innocenti J4
To start off, 2000 Caterham C21 is newer by 29 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 1,588 cc (4 cylinders), 2000 Caterham C21 is equipped with a bigger engine. In terms of performance, 2000 Caterham C21 (115 HP @ 6000 RPM) has 59 more horse power than 1971 Innocenti J4. (56 HP @ 5500 RPM). In normal driving conditions, 2000 Caterham C21 should accelerate faster than 1971 Innocenti J4. With that said, vehicle weight also plays an important factor in acceleration. 1971 Innocenti J4 weights approximately 230 kg more than 2000 Caterham C21.
Because 2000 Caterham C21 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 2000 Caterham C21. 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, 2000 Caterham C21 (145 Nm @ 3000 RPM) has 61 more torque (in Nm) than 1971 Innocenti J4. (84 Nm @ 2500 RPM). This means 2000 Caterham C21 will have an easier job in driving up hills or pulling heavy equipment than 1971 Innocenti J4.
Compare all specifications:
| 2000 Caterham C21 | 1971 Innocenti J4 | |
| Make | Caterham | Innocenti |
| Model | C21 | J4 |
| Year Released | 2000 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 1588 cc | 1098 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 115 HP | 56 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 145 Nm | 84 Nm |
| Torque RPM | 3000 RPM | 2500 RPM |
| Engine Bore Size | 80 mm | 64.6 mm |
| Engine Stroke Size | 79 mm | 83.7 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Vehicle Weight | 650 kg | 880 kg |
| Vehicle Length | 3810 mm | 3720 mm |
| Vehicle Width | 1590 mm | 1540 mm |
| Vehicle Height | 1060 mm | 1380 mm |
| Wheelbase Size | 2260 mm | 2380 mm |
