2003 Fiat Siena vs. 2006 Lincoln Navigator
To start off, 2006 Lincoln Navigator is newer by 3 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 5,408 cc (8 cylinders), 2006 Lincoln Navigator is equipped with a bigger engine. In terms of performance, 2006 Lincoln Navigator (301 HP @ 5000 RPM) has 231 more horse power than 2003 Fiat Siena. (70 HP @ 5750 RPM) In normal driving conditions, 2006 Lincoln Navigator should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2006 Lincoln Navigator weights approximately 1416 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, 2006 Lincoln Navigator (495 Nm @ 3750 RPM) has 400 more torque (in Nm) than 2003 Fiat Siena. (95 Nm @ 4000 RPM). This means 2006 Lincoln Navigator will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena. 2006 Lincoln Navigator 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. 2006 Lincoln Navigator will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Fiat Siena | 2006 Lincoln Navigator | |
| Make | Fiat | Lincoln |
| Model | Siena | Navigator |
| Year Released | 2003 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 999 cc | 5408 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 70 HP | 301 HP |
| Engine RPM | 5750 RPM | 5000 RPM |
| Torque | 95 Nm | 495 Nm |
| Torque RPM | 4000 RPM | 3750 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1020 kg | 2436 kg |
| Vehicle Length | 4110 mm | 5280 mm |
| Vehicle Width | 1630 mm | 2010 mm |
| Vehicle Height | 1470 mm | 1980 mm |
| Wheelbase Size | 2380 mm | 3020 mm |
