2003 Fiat Siena vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2003 Fiat Siena would be higher. At 1,598 cc (4 cylinders), 2007 Opel Astra is equipped with a bigger engine. In terms of performance, 2007 Opel Astra (104 HP @ 6000 RPM) has 34 more horse power than 2003 Fiat Siena. (70 HP @ 5750 RPM) In normal driving conditions, 2007 Opel Astra should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Astra weights approximately 295 kg more than 2003 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, 2007 Opel Astra (150 Nm @ 3900 RPM) has 55 more torque (in Nm) than 2003 Fiat Siena. (95 Nm @ 4000 RPM). This means 2007 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena. 2007 Opel Astra has automatic transmission and 2003 Fiat Siena has manual transmission. 2003 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Opel Astra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Fiat Siena | 2007 Opel Astra | |
| Make | Fiat | Opel |
| Model | Siena | Astra |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 999 cc | 1598 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 70 HP | 104 HP |
| Engine RPM | 5750 RPM | 6000 RPM |
| Torque | 95 Nm | 150 Nm |
| Torque RPM | 4000 RPM | 3900 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1020 kg | 1315 kg |
| Vehicle Length | 4110 mm | 4520 mm |
| Vehicle Width | 1630 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1510 mm |
| Wheelbase Size | 2380 mm | 2710 mm |
