2006 Daihatsu Sirion vs. 2007 Opel Vectra
To start off, 2007 Opel Vectra is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 2006 Daihatsu Sirion would be higher. At 1,910 cc (4 cylinders), 2007 Opel Vectra is equipped with a bigger engine. In terms of performance, 2007 Opel Vectra (149 HP @ 4000 RPM) has 63 more horse power than 2006 Daihatsu Sirion. (86 HP @ 6000 RPM) In normal driving conditions, 2007 Opel Vectra should accelerate faster than 2006 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Vectra weights approximately 795 kg more than 2006 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 (315 Nm @ 2000 RPM) has 195 more torque (in Nm) than 2006 Daihatsu Sirion. (120 Nm @ 3200 RPM). This means 2007 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2006 Daihatsu Sirion.
Compare all specifications:
| 2006 Daihatsu Sirion | 2007 Opel Vectra | |
| Make | Daihatsu | Opel |
| Model | Sirion | Vectra |
| Year Released | 2006 | 2007 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1298 cc | 1910 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 86 HP | 149 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 120 Nm | 315 Nm |
| Torque RPM | 3200 RPM | 2000 RPM |
| Engine Bore Size | 72.1 mm | 82 mm |
| Engine Stroke Size | 79.7 mm | 90.4 mm |
| Engine Compression Ratio | 10.0:1 | 18.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 740 kg | 1535 kg |
| Vehicle Length | 3400 mm | 4600 mm |
| Vehicle Height | 1250 mm | 1470 mm |
| Wheelbase Size | 2440 mm | 2710 mm |
| Fuel Consumption Overall | 4.8 L/100km | 5.7 L/100km |
| Fuel Tank Capacity | 40 L | 61 L |
