1999 Daihatsu Sirion vs. 2003 Daihatsu Copen
To start off, 2003 Daihatsu Copen is newer by 4 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 988 cc (3 cylinders), 1999 Daihatsu Sirion is equipped with a bigger engine. In terms of performance, 2003 Daihatsu Copen (67 HP @ 6000 RPM) has 14 more horse power than 1999 Daihatsu Sirion. (53 HP @ 5200 RPM) In normal driving conditions, 2003 Daihatsu Copen should accelerate faster than 1999 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 1999 Daihatsu Sirion weights approximately 40 kg more than 2003 Daihatsu Copen.
Because 1999 Daihatsu Sirion is four wheel drive (4WD), it will have significant more traction and grip than 2003 Daihatsu Copen. In wet, icy, snow, or gravel driving conditions, 1999 Daihatsu Sirion will offer significantly more control. 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, 2003 Daihatsu Copen (102 Nm @ 3200 RPM) has 14 more torque (in Nm) than 1999 Daihatsu Sirion. (88 Nm @ 3600 RPM). This means 2003 Daihatsu Copen will have an easier job in driving up hills or pulling heavy equipment than 1999 Daihatsu Sirion.
Compare all specifications:
| 1999 Daihatsu Sirion | 2003 Daihatsu Copen | |
| Make | Daihatsu | Daihatsu |
| Model | Sirion | Copen |
| Year Released | 1999 | 2003 |
| Body Type | Hatchback | Roadster |
| Engine Position | Front | Front |
| Engine Size | 988 cc | 657 cc |
| Engine Cylinders | 3 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 53 HP | 67 HP |
| Engine RPM | 5200 RPM | 6000 RPM |
| Torque | 88 Nm | 102 Nm |
| Torque RPM | 3600 RPM | 3200 RPM |
| Engine Bore Size | 71.9 mm | 61 mm |
| Engine Stroke Size | 81 mm | 56.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 890 kg | 850 kg |
| Vehicle Length | 3680 mm | 3400 mm |
| Vehicle Width | 1600 mm | 1480 mm |
| Vehicle Height | 1460 mm | 1250 mm |
| Wheelbase Size | 2350 mm | 2240 mm |
| Fuel Tank Capacity | 37 L | 43 L |
