2004 Daihatsu Sirion vs. 2003 Opel Vectra
To start off, 2004 Daihatsu Sirion is newer by 1 year(s). Which means there will be less support and parts availability for 2003 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2003 Opel Vectra would be higher. At 1,994 cc (4 cylinders), 2003 Opel Vectra is equipped with a bigger engine. In terms of performance, 2003 Opel Vectra (173 HP @ 5500 RPM) has 101 more horse power than 2004 Daihatsu Sirion. (72 HP @ 5200 RPM) In normal driving conditions, 2003 Opel Vectra should accelerate faster than 2004 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 660 kg more than 2004 Daihatsu Sirion. 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, 2003 Opel Vectra (270 Nm @ 2500 RPM) has 169 more torque (in Nm) than 2004 Daihatsu Sirion. (101 Nm @ 3600 RPM). This means 2003 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2004 Daihatsu Sirion.
Compare all specifications:
| 2004 Daihatsu Sirion | 2003 Opel Vectra | |
| Make | Daihatsu | Opel |
| Model | Sirion | Vectra |
| Year Released | 2004 | 2003 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1296 cc | 1994 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 72 HP | 173 HP |
| Engine RPM | 5200 RPM | 5500 RPM |
| Torque | 101 Nm | 270 Nm |
| Torque RPM | 3600 RPM | 2500 RPM |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 850 kg | 1510 kg |
| Vehicle Length | 3680 mm | 4600 mm |
| Vehicle Width | 1600 mm | 1800 mm |
| Vehicle Height | 1460 mm | 1470 mm |
| Wheelbase Size | 2350 mm | 2840 mm |
