2004 Opel Signum vs. 2001 Fiat Siena
To start off, 2004 Opel Signum is newer by 3 year(s). Which means there will be less support and parts availability for 2001 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2001 Fiat Siena would be higher. At 1,796 cc (4 cylinders), 2004 Opel Signum is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (125 HP @ 5600 RPM) has 26 more horse power than 2001 Fiat Siena. (99 HP @ 6000 RPM). In normal driving conditions, 2004 Opel Signum should accelerate faster than 2001 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 330 kg more than 2001 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 Signum (170 Nm @ 3800 RPM) has 24 more torque (in Nm) than 2001 Fiat Siena. (146 Nm @ 4000 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2001 Fiat Siena.
Compare all specifications:
| 2004 Opel Signum | 2001 Fiat Siena | |
| Make | Opel | Fiat |
| Model | Signum | Siena |
| Year Released | 2004 | 2001 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 1596 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 125 HP | 99 HP |
| Engine RPM | 5600 RPM | 6000 RPM |
| Torque | 170 Nm | 146 Nm |
| Torque RPM | 3800 RPM | 4000 RPM |
| Engine Bore Size | 80.5 mm | 80.5 mm |
| Engine Stroke Size | 88.2 mm | 78.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1380 kg | 1050 kg |
| Vehicle Length | 4640 mm | 4110 mm |
| Vehicle Width | 1800 mm | 1630 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2700 mm | 2380 mm |
