2003 Fiat Siena vs. 2006 Mercedes-Benz S
To start off, 2006 Mercedes-Benz S 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 3,498 cc (6 cylinders), 2006 Mercedes-Benz S is equipped with a bigger engine. In terms of performance, 2006 Mercedes-Benz S (269 HP @ 6000 RPM) has 170 more horse power than 2003 Fiat Siena. (99 HP @ 6000 RPM) In normal driving conditions, 2006 Mercedes-Benz S should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2006 Mercedes-Benz S weights approximately 875 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.
Because 2006 Mercedes-Benz S is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2006 Mercedes-Benz S. However, in wet, icy, snow, or gravel driving conditions, 2003 Fiat Siena, being front wheel drive (FWD), will offer much better control with better grip. 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 Mercedes-Benz S (350 Nm @ 2400 RPM) has 204 more torque (in Nm) than 2003 Fiat Siena. (146 Nm @ 4000 RPM). This means 2006 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena. 2006 Mercedes-Benz S 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 Mercedes-Benz S will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Fiat Siena | 2006 Mercedes-Benz S | |
| Make | Fiat | Mercedes-Benz |
| Model | Siena | S |
| Year Released | 2003 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1596 cc | 3498 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 99 HP | 269 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 146 Nm | 350 Nm |
| Torque RPM | 4000 RPM | 2400 RPM |
| Engine Bore Size | 80.5 mm | 92.9 mm |
| Engine Stroke Size | 78.4 mm | 86 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1050 kg | 1925 kg |
| Vehicle Length | 4110 mm | 5210 mm |
| Vehicle Width | 1630 mm | 1880 mm |
| Vehicle Height | 1470 mm | 1480 mm |
| Wheelbase Size | 2380 mm | 3170 mm |
