2006 Chevrolet Optra vs. 2007 Daihatsu Sirion
To start off, 2007 Daihatsu Sirion is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Chevrolet Optra. In addition, the cost of maintenance, including insurance, on 2006 Chevrolet Optra would be higher. At 1,799 cc (4 cylinders), 2006 Chevrolet Optra is equipped with a bigger engine. In terms of performance, 2006 Chevrolet Optra (120 HP @ 5800 RPM) has 34 more horse power than 2007 Daihatsu Sirion. (86 HP @ 6000 RPM). In normal driving conditions, 2006 Chevrolet Optra should accelerate faster than 2007 Daihatsu Sirion.
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, 2006 Chevrolet Optra (165 Nm @ 4000 RPM) has 45 more torque (in Nm) than 2007 Daihatsu Sirion. (120 Nm @ 3200 RPM). This means 2006 Chevrolet Optra will have an easier job in driving up hills or pulling heavy equipment than 2007 Daihatsu Sirion. 2007 Daihatsu Sirion has automatic transmission and 2006 Chevrolet Optra has manual transmission. 2006 Chevrolet Optra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Daihatsu Sirion will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Chevrolet Optra | 2007 Daihatsu Sirion | |
| Make | Chevrolet | Daihatsu |
| Model | Optra | Sirion |
| Year Released | 2006 | 2007 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1799 cc | 1297 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 120 HP | 86 HP |
| Engine RPM | 5800 RPM | 6000 RPM |
| Torque | 165 Nm | 120 Nm |
| Torque RPM | 4000 RPM | 3200 RPM |
| Engine Bore Size | 81.6 mm | 72 mm |
| Engine Stroke Size | 86 mm | 79.7 mm |
| Engine Compression Ratio | 9.8:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4440 mm | 3610 mm |
| Vehicle Width | 1730 mm | 1670 mm |
| Vehicle Height | 1460 mm | 1560 mm |
| Wheelbase Size | 2610 mm | 2440 mm |
| Fuel Tank Capacity | 60 L | 40 L |
