2007 Fiat Siena vs. 2006 Opel Astra
To start off, 2007 Fiat Siena is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Opel Astra. In addition, the cost of maintenance, including insurance, on 2006 Opel Astra would be higher. At 1,581 cc (4 cylinders), 2007 Fiat Siena is equipped with a bigger engine. In terms of performance, 2007 Fiat Siena (100 HP @ 5500 RPM) has 11 more horse power than 2006 Opel Astra. (89 HP @ 5600 RPM). In normal driving conditions, 2007 Fiat Siena should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Astra weights approximately 160 kg more than 2007 Fiat Siena.
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, 2007 Fiat Siena (140 Nm @ 4000 RPM) has 15 more torque (in Nm) than 2006 Opel Astra. (125 Nm @ 4000 RPM). This means 2007 Fiat Siena will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Astra.
Compare all specifications:
| 2007 Fiat Siena | 2006 Opel Astra | |
| Make | Fiat | Opel |
| Model | Siena | Astra |
| Year Released | 2007 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1581 cc | 1364 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 100 HP | 89 HP |
| Engine RPM | 5500 RPM | 5600 RPM |
| Torque | 140 Nm | 125 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Compression Ratio | 9.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 179 km/hour | 173 km/hour |
| Acceleration 0-100mph | 11.5 seconds | 13.7 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1070 kg | 1230 kg |
| Vehicle Width | 1640 mm | 1760 mm |
| Wheelbase Size | 2380 mm | 2620 mm |
| Fuel Consumption Overall | 8.2 L/100km | 6.3 L/100km |
| Fuel Tank Capacity | 54 L | 52 L |
