1978 Fiat 131 vs. 1966 Riley 4
To start off, 1978 Fiat 131 is newer by 12 year(s). Which means there will be less support and parts availability for 1966 Riley 4. In addition, the cost of maintenance, including insurance, on 1966 Riley 4 would be higher. At 1,995 cc (4 cylinders), 1978 Fiat 131 is equipped with a bigger engine. In terms of performance, 1966 Riley 4 (67 HP) has 8 more horse power than 1978 Fiat 131. (59 HP) In normal driving conditions, 1966 Riley 4 should accelerate faster than 1978 Fiat 131. With that said, vehicle weight also plays an important factor in acceleration. 1978 Fiat 131 weights approximately 32 kg more than 1966 Riley 4.
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, 1966 Riley 4 (122 Nm @ 2500 RPM) has 9 more torque (in Nm) than 1978 Fiat 131. (113 Nm @ 2400 RPM). This means 1966 Riley 4 will have an easier job in driving up hills or pulling heavy equipment than 1978 Fiat 131.
Compare all specifications:
| 1978 Fiat 131 | 1966 Riley 4 | |
| Make | Fiat | Riley |
| Model | 131 | 4 |
| Year Released | 1978 | 1966 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1622 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 59 HP | 67 HP |
| Torque | 113 Nm | 122 Nm |
| Torque RPM | 2400 RPM | 2500 RPM |
| Engine Bore Size | 88 mm | 76.2 mm |
| Engine Stroke Size | 82 mm | 88.9 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1180 kg | 1148 kg |
| Vehicle Length | 4270 mm | 4540 mm |
| Vehicle Width | 1660 mm | 1620 mm |
| Vehicle Height | 1370 mm | 1530 mm |
| Wheelbase Size | 2500 mm | 2530 mm |
