2007 Daihatsu Sirion vs. 2003 Fiat Siena
To start off, 2007 Daihatsu Sirion 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 1,301 cc (4 cylinders), 2003 Fiat Siena is equipped with a bigger engine. In terms of performance, 2007 Daihatsu Sirion (86 HP @ 6000 RPM) has 27 more horse power than 2003 Fiat Siena. (59 HP @ 5200 RPM). In normal driving conditions, 2007 Daihatsu Sirion should accelerate faster than 2003 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2003 Fiat Siena weights approximately 100 kg more than 2007 Daihatsu Sirion.
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 Daihatsu Sirion (120 Nm @ 3200 RPM) has 17 more torque (in Nm) than 2003 Fiat Siena. (103 Nm @ 2500 RPM). This means 2007 Daihatsu Sirion will have an easier job in driving up hills or pulling heavy equipment than 2003 Fiat Siena. 2007 Daihatsu Sirion 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 Daihatsu Sirion will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Daihatsu Sirion | 2003 Fiat Siena | |
| Make | Daihatsu | Fiat |
| Model | Sirion | Siena |
| Year Released | 2007 | 2003 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1297 cc | 1301 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 86 HP | 59 HP |
| Engine RPM | 6000 RPM | 5200 RPM |
| Torque | 120 Nm | 103 Nm |
| Torque RPM | 3200 RPM | 2500 RPM |
| Engine Bore Size | 72 mm | 70.8 mm |
| Engine Stroke Size | 79.7 mm | 78.9 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 940 kg | 1040 kg |
| Vehicle Length | 3610 mm | 4110 mm |
| Vehicle Width | 1670 mm | 1630 mm |
| Vehicle Height | 1560 mm | 1470 mm |
| Wheelbase Size | 2440 mm | 2380 mm |
