1991 Mitsubishi Sigma vs. 1981 Fiat 131
To start off, 1991 Mitsubishi Sigma is newer by 10 year(s). Which means there will be less support and parts availability for 1981 Fiat 131. In addition, the cost of maintenance, including insurance, on 1981 Fiat 131 would be higher. At 2,972 cc (6 cylinders), 1991 Mitsubishi Sigma is equipped with a bigger engine. In terms of performance, 1991 Mitsubishi Sigma (176 HP @ 5500 RPM) has 65 more horse power than 1981 Fiat 131. (111 HP @ 5600 RPM). In normal driving conditions, 1991 Mitsubishi Sigma should accelerate faster than 1981 Fiat 131. With that said, vehicle weight also plays an important factor in acceleration. 1991 Mitsubishi Sigma weights approximately 365 kg more than 1981 Fiat 131. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1991 Mitsubishi Sigma (251 Nm @ 3000 RPM) has 84 more torque (in Nm) than 1981 Fiat 131. (167 Nm @ 3600 RPM). This means 1991 Mitsubishi Sigma will have an easier job in driving up hills or pulling heavy equipment than 1981 Fiat 131.
Compare all specifications:
| 1991 Mitsubishi Sigma | 1981 Fiat 131 | |
| Make | Mitsubishi | Fiat |
| Model | Sigma | 131 |
| Year Released | 1991 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 2972 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 176 HP | 111 HP |
| Engine RPM | 5500 RPM | 5600 RPM |
| Torque | 251 Nm | 167 Nm |
| Torque RPM | 3000 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1470 kg | 1105 kg |
| Vehicle Length | 4760 mm | 4270 mm |
| Vehicle Width | 1780 mm | 1660 mm |
| Vehicle Height | 1440 mm | 1400 mm |
| Wheelbase Size | 2730 mm | 2500 mm |
