1999 Daihatsu Sirion vs. 2007 Opel Vectra
To start off, 2007 Opel Vectra is newer by 8 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 2,958 cc (6 cylinders), 2007 Opel Vectra is equipped with a bigger engine. In terms of performance, 2007 Opel Vectra (175 HP @ 4000 RPM) has 103 more horse power than 1999 Daihatsu Sirion. (72 HP @ 5200 RPM) In normal driving conditions, 2007 Opel Vectra should accelerate faster than 1999 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Vectra weights approximately 855 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, 2007 Opel Vectra (370 Nm @ 1900 RPM) has 269 more torque (in Nm) than 1999 Daihatsu Sirion. (101 Nm @ 3600 RPM). This means 2007 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 1999 Daihatsu Sirion. 2007 Opel Vectra has automatic transmission and 1999 Daihatsu Sirion has manual transmission. 1999 Daihatsu Sirion will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Opel Vectra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Daihatsu Sirion | 2007 Opel Vectra | |
| Make | Daihatsu | Opel |
| Model | Sirion | Vectra |
| Year Released | 1999 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1298 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 72 HP | 175 HP |
| Engine RPM | 5200 RPM | 4000 RPM |
| Torque | 101 Nm | 370 Nm |
| Torque RPM | 3600 RPM | 1900 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 850 kg | 1705 kg |
| Vehicle Length | 3680 mm | 4830 mm |
| Vehicle Width | 1600 mm | 1800 mm |
| Vehicle Height | 1460 mm | 1510 mm |
| Wheelbase Size | 2350 mm | 2840 mm |
