2008 Fiat Siena vs. 2006 Opel Astra
To start off, 2008 Fiat Siena is newer by 2 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 1,589 cc (4 cylinders), 2006 Opel Astra is equipped with a bigger engine. In terms of performance, 2008 Fiat Siena (106 HP @ 5500 RPM) has 2 more horse power than 2006 Opel Astra. (104 HP @ 6000 RPM). In normal driving conditions, 2008 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 170 kg more than 2008 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, 2006 Opel Astra (150 Nm @ 3900 RPM) has 10 more torque (in Nm) than 2008 Fiat Siena. (140 Nm @ 4000 RPM). This means 2006 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2008 Fiat Siena.
Compare all specifications:
| 2008 Fiat Siena | 2006 Opel Astra | |
| Make | Fiat | Opel |
| Model | Siena | Astra |
| Year Released | 2008 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1581 cc | 1589 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 106 HP | 104 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 140 Nm | 150 Nm |
| Torque RPM | 4000 RPM | 3900 RPM |
| Engine Bore Size | 86.5 mm | 79.1 mm |
| Engine Stroke Size | 67.4 mm | 81.5 mm |
| Engine Compression Ratio | 10.2:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Acceleration 0-100mph | 10.5 seconds | 12.3 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 | 1095 kg | 1265 kg |
| Vehicle Length | 3550 mm | 4260 mm |
| Vehicle Width | 1640 mm | 1760 mm |
| Vehicle Height | 1490 mm | 1470 mm |
| Wheelbase Size | 2370 mm | 2620 mm |
| Fuel Consumption Overall | 8.2 L/100km | 6.6 L/100km |
| Fuel Tank Capacity | 47 L | 52 L |
