2008 Daihatsu Sirion vs. 2007 Opel Vectra
To start off, 2008 Daihatsu Sirion is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2007 Opel Vectra would be higher. At 2,792 cc (6 cylinders), 2007 Opel Vectra is equipped with a bigger engine. In terms of performance, 2007 Opel Vectra (276 HP @ 5500 RPM) has 174 more horse power than 2008 Daihatsu Sirion. (102 HP @ 6000 RPM) In normal driving conditions, 2007 Opel Vectra should accelerate faster than 2008 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Vectra weights approximately 600 kg more than 2008 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 (355 Nm @ 1800 RPM) has 217 more torque (in Nm) than 2008 Daihatsu Sirion. (138 Nm @ 4400 RPM). This means 2007 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2008 Daihatsu Sirion. 2008 Daihatsu Sirion has automatic transmission and 2007 Opel Vectra has manual transmission. 2007 Opel Vectra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Daihatsu Sirion will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Daihatsu Sirion | 2007 Opel Vectra | |
| Make | Daihatsu | Opel |
| Model | Sirion | Vectra |
| Year Released | 2008 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1493 cc | 2792 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 102 HP | 276 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 138 Nm | 355 Nm |
| Torque RPM | 4400 RPM | 1800 RPM |
| Engine Bore Size | 72 mm | 89 mm |
| Engine Stroke Size | 91.8 mm | 74.8 mm |
| Engine Compression Ratio | 10.0:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 180 km/hour | 250 km/hour |
| Acceleration 0-100mph | 11.1 seconds | 6.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 980 kg | 1580 kg |
| Vehicle Length | 3400 mm | 4620 mm |
| Vehicle Height | 1250 mm | 1460 mm |
| Wheelbase Size | 2440 mm | 2710 mm |
| Fuel Consumption Overall | 6.7 L/100km | 10.4 L/100km |
| Fuel Tank Capacity | 40 L | 61 L |
