1974 Fiat 128 vs. 1977 Fiat 131
To start off, 1977 Fiat 131 is newer by 3 year(s). Which means there will be less support and parts availability for 1974 Fiat 128. In addition, the cost of maintenance, including insurance, on 1974 Fiat 128 would be higher. At 1,297 cc (4 cylinders), 1977 Fiat 131 is equipped with a bigger engine. In terms of performance, 1977 Fiat 131 (64 HP @ 5400 RPM) has 1 more horse power than 1974 Fiat 128. (63 HP @ 6000 RPM) In normal driving conditions, 1977 Fiat 131 should accelerate faster than 1974 Fiat 128. With that said, vehicle weight also plays an important factor in acceleration. 1977 Fiat 131 weights approximately 200 kg more than 1974 Fiat 128. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1977 Fiat 131 (102 Nm @ 3000 RPM) has 19 more torque (in Nm) than 1974 Fiat 128. (83 Nm @ 4400 RPM). This means 1977 Fiat 131 will have an easier job in driving up hills or pulling heavy equipment than 1974 Fiat 128.
Compare all specifications:
| 1974 Fiat 128 | 1977 Fiat 131 | |
| Make | Fiat | Fiat |
| Model | 128 | 131 |
| Year Released | 1974 | 1977 |
| Engine Position | Front | Front |
| Engine Size | 1116 cc | 1297 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 63 HP | 64 HP |
| Engine RPM | 6000 RPM | 5400 RPM |
| Torque | 83 Nm | 102 Nm |
| Torque RPM | 4400 RPM | 3000 RPM |
| Engine Bore Size | 80.1 mm | 76.1 mm |
| Engine Stroke Size | 55.5 mm | 71.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 820 kg | 1020 kg |
| Vehicle Length | 3820 mm | 4270 mm |
| Vehicle Width | 1570 mm | 1660 mm |
| Vehicle Height | 1310 mm | 1370 mm |
| Wheelbase Size | 2240 mm | 2500 mm |
