1999 Daihatsu Sirion vs. 2005 Opel Vectra
To start off, 2005 Opel Vectra is newer by 6 year(s). Which means there will be less support and parts availability for 1999 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 1999 Daihatsu Sirion would be higher. At 1,909 cc (4 cylinders), 2005 Opel Vectra is equipped with a bigger engine. In terms of performance, 2005 Opel Vectra (148 HP @ 4000 RPM) has 95 more horse power than 1999 Daihatsu Sirion. (53 HP @ 5200 RPM) In normal driving conditions, 2005 Opel Vectra should accelerate faster than 1999 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Vectra weights approximately 390 kg more than 1999 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, 2005 Opel Vectra (321 Nm @ 2000 RPM) has 233 more torque (in Nm) than 1999 Daihatsu Sirion. (88 Nm @ 3600 RPM). This means 2005 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 1999 Daihatsu Sirion.
Compare all specifications:
| 1999 Daihatsu Sirion | 2005 Opel Vectra | |
| Make | Daihatsu | Opel |
| Model | Sirion | Vectra |
| Year Released | 1999 | 2005 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 989 cc | 1909 cc |
| Engine Cylinders | 3 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 53 HP | 148 HP |
| Engine RPM | 5200 RPM | 4000 RPM |
| Torque | 88 Nm | 321 Nm |
| Torque RPM | 3600 RPM | 2000 RPM |
| Engine Bore Size | 71.9 mm | 82 mm |
| Engine Stroke Size | 81 mm | 90.4 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 810 kg | 1200 kg |
| Vehicle Length | 3680 mm | 4600 mm |
| Vehicle Width | 1600 mm | 1800 mm |
| Vehicle Height | 1460 mm | 1470 mm |
| Wheelbase Size | 2350 mm | 2640 mm |
| Fuel Tank Capacity | 37 L | 61 L |
