1971 Innocenti J4 vs. 1974 Mazda RX-4
To start off, 1974 Mazda RX-4 is newer by 3 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 2,616 cc, 1974 Mazda RX-4 is equipped with a bigger engine. In terms of performance, 1974 Mazda RX-4 (115 HP @ 6000 RPM) has 59 more horse power than 1971 Innocenti J4. (56 HP @ 5500 RPM) In normal driving conditions, 1974 Mazda RX-4 should accelerate faster than 1971 Innocenti J4. With that said, vehicle weight also plays an important factor in acceleration. 1974 Mazda RX-4 weights approximately 230 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 1974 Mazda RX-4 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 1974 Mazda RX-4. 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, 1974 Mazda RX-4 (165 Nm @ 4000 RPM) has 81 more torque (in Nm) than 1971 Innocenti J4. (84 Nm @ 2500 RPM). This means 1974 Mazda RX-4 will have an easier job in driving up hills or pulling heavy equipment than 1971 Innocenti J4.
Compare all specifications:
| 1971 Innocenti J4 | 1974 Mazda RX-4 | |
| Make | Innocenti | Mazda |
| Model | J4 | RX-4 |
| Year Released | 1971 | 1974 |
| Engine Position | Front | Front |
| Engine Size | 1098 cc | 2616 cc |
| Engine Type | in-line | dual-disk rotary |
| Horse Power | 56 HP | 115 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 84 Nm | 165 Nm |
| Torque RPM | 2500 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 880 kg | 1110 kg |
| Vehicle Length | 3720 mm | 4400 mm |
| Vehicle Width | 1540 mm | 1670 mm |
| Vehicle Height | 1380 mm | 1390 mm |
| Wheelbase Size | 2380 mm | 2520 mm |
