1973 Austin Allegro vs. 2006 Fiat Siena
To start off, 2006 Fiat Siena is newer by 33 year(s). Which means there will be less support and parts availability for 1973 Austin Allegro. In addition, the cost of maintenance, including insurance, on 1973 Austin Allegro would be higher. At 1,581 cc (4 cylinders), 2006 Fiat Siena is equipped with a bigger engine. In terms of performance, 2006 Fiat Siena (101 HP @ 5500 RPM) has 43 more horse power than 1973 Austin Allegro. (58 HP @ 5300 RPM) In normal driving conditions, 2006 Fiat Siena should accelerate faster than 1973 Austin Allegro. With that said, vehicle weight also plays an important factor in acceleration. 2006 Fiat Siena weights approximately 963 kg more than 1973 Austin Allegro. 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, 2006 Fiat Siena (140 Nm @ 4000 RPM) has 47 more torque (in Nm) than 1973 Austin Allegro. (93 Nm @ 3000 RPM). This means 2006 Fiat Siena will have an easier job in driving up hills or pulling heavy equipment than 1973 Austin Allegro.
Compare all specifications:
| 1973 Austin Allegro | 2006 Fiat Siena | |
| Make | Austin | Fiat |
| Model | Allegro | Siena |
| Year Released | 1973 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1275 cc | 1581 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 58 HP | 101 HP |
| Engine RPM | 5300 RPM | 5500 RPM |
| Torque | 93 Nm | 140 Nm |
| Torque RPM | 3000 RPM | 4000 RPM |
| Engine Bore Size | 70.6 mm | 86.4 mm |
| Engine Stroke Size | 81.3 mm | 67.4 mm |
| Engine Compression Ratio | 8.8:1 | 9.5:1 |
| Top Speed | 135 km/hour | 184 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 820 kg | 1783 kg |
| Vehicle Length | 3860 mm | 3830 mm |
| Vehicle Width | 1620 mm | 1640 mm |
| Vehicle Height | 1400 mm | 1440 mm |
| Wheelbase Size | 2440 mm | 2380 mm |
| Fuel Tank Capacity | 47 L | 54 L |
