2008 Fiat Siena vs. 2004 Opel Astra
To start off, 2008 Fiat Siena is newer by 4 year(s). Which means there will be less support and parts availability for 2004 Opel Astra. In addition, the cost of maintenance, including insurance, on 2004 Opel Astra would be higher. At 1,796 cc (4 cylinders), 2004 Opel Astra is equipped with a bigger engine. In terms of performance, 2004 Opel Astra (125 HP @ 5600 RPM) has 19 more horse power than 2008 Fiat Siena. (106 HP @ 5500 RPM) In normal driving conditions, 2004 Opel Astra should accelerate faster than 2008 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Astra weights approximately 230 kg more than 2008 Fiat Siena. 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, 2004 Opel Astra (167 Nm @ 3800 RPM) has 27 more torque (in Nm) than 2008 Fiat Siena. (140 Nm @ 4000 RPM). This means 2004 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 | 2004 Opel Astra | |
| Make | Fiat | Opel |
| Model | Siena | Astra |
| Year Released | 2008 | 2004 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1581 cc | 1796 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 106 HP | 125 HP |
| Engine RPM | 5500 RPM | 5600 RPM |
| Torque | 140 Nm | 167 Nm |
| Torque RPM | 4000 RPM | 3800 RPM |
| Engine Bore Size | 86.5 mm | 80.5 mm |
| Engine Stroke Size | 67.4 mm | 88.2 mm |
| Engine Compression Ratio | 10.2:1 | 10.5:1 |
| Acceleration 0-100mph | 10.5 seconds | 10.9 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 | 1325 kg |
| Vehicle Length | 3550 mm | 4520 mm |
| Vehicle Width | 1640 mm | 1800 mm |
| Vehicle Height | 1490 mm | 1510 mm |
| Wheelbase Size | 2370 mm | 2700 mm |
| Fuel Consumption Overall | 8.2 L/100km | 8 L/100km |
| Fuel Tank Capacity | 47 L | 52 L |
