2008 Fiat Siena vs. 2006 Opel Signum
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 Signum. In addition, the cost of maintenance, including insurance, on 2006 Opel Signum would be higher. At 3,175 cc (6 cylinders), 2006 Opel Signum is equipped with a bigger engine. In terms of performance, 2006 Opel Signum (208 HP @ 6200 RPM) has 102 more horse power than 2008 Fiat Siena. (106 HP @ 5500 RPM) In normal driving conditions, 2006 Opel Signum should accelerate faster than 2008 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Signum weights approximately 515 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, 2006 Opel Signum (301 Nm @ 4000 RPM) has 161 more torque (in Nm) than 2008 Fiat Siena. (140 Nm @ 4000 RPM). This means 2006 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 Fiat Siena. 2006 Opel Signum has automatic transmission and 2008 Fiat Siena has manual transmission. 2008 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Fiat Siena | 2006 Opel Signum | |
| Make | Fiat | Opel |
| Model | Siena | Signum |
| Year Released | 2008 | 2006 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1581 cc | 3175 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 106 HP | 208 HP |
| Engine RPM | 5500 RPM | 6200 RPM |
| Torque | 140 Nm | 301 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 86.5 mm | 87.5 mm |
| Engine Stroke Size | 67.4 mm | 88 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 10.5 seconds | 7.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1095 kg | 1610 kg |
| Vehicle Length | 3550 mm | 4640 mm |
| Vehicle Width | 1640 mm | 1800 mm |
| Vehicle Height | 1490 mm | 1470 mm |
| Wheelbase Size | 2370 mm | 2840 mm |
| Fuel Consumption Overall | 8.2 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 47 L | 60 L |
