1971 Fiat 127 vs. 2011 Fiat Siena
To start off, 2011 Fiat Siena is newer by 40 year(s). Which means there will be less support and parts availability for 1971 Fiat 127. In addition, the cost of maintenance, including insurance, on 1971 Fiat 127 would be higher. At 1,581 cc (4 cylinders), 2011 Fiat Siena is equipped with a bigger engine. In terms of performance, 2011 Fiat Siena (106 HP @ 5500 RPM) has 62 more horse power than 1971 Fiat 127. (44 HP @ 6200 RPM) In normal driving conditions, 2011 Fiat Siena should accelerate faster than 1971 Fiat 127. With that said, vehicle weight also plays an important factor in acceleration. 2011 Fiat Siena weights approximately 390 kg more than 1971 Fiat 127. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear 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, 2011 Fiat Siena (140 Nm @ 4000 RPM) has 77 more torque (in Nm) than 1971 Fiat 127. (63 Nm @ 3500 RPM). This means 2011 Fiat Siena will have an easier job in driving up hills or pulling heavy equipment than 1971 Fiat 127.
Compare all specifications:
| 1971 Fiat 127 | 2011 Fiat Siena | |
| Make | Fiat | Fiat |
| Model | 127 | Siena |
| Year Released | 1971 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 903 cc | 1581 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 44 HP | 106 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 63 Nm | 140 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 65 mm | 86.5 mm |
| Engine Stroke Size | 68 mm | 67.4 mm |
| Engine Compression Ratio | 9.0:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 705 kg | 1095 kg |
| Vehicle Length | 3600 mm | 3550 mm |
| Vehicle Width | 1530 mm | 1640 mm |
| Vehicle Height | 1380 mm | 1490 mm |
| Wheelbase Size | 2230 mm | 2370 mm |
| Fuel Tank Capacity | 30 L | 47 L |
