2004 Buick Regal vs. 1999 Daihatsu Sirion
To start off, 2004 Buick Regal is newer by 5 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 3,786 cc (6 cylinders), 2004 Buick Regal is equipped with a bigger engine. In terms of performance, 2004 Buick Regal (251 HP @ 5200 RPM) has 198 more horse power than 1999 Daihatsu Sirion. (53 HP @ 5200 RPM). In normal driving conditions, 2004 Buick Regal should accelerate faster than 1999 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2004 Buick Regal weights approximately 788 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, 2004 Buick Regal (388 Nm) has 300 more torque (in Nm) than 1999 Daihatsu Sirion. (88 Nm). This means 2004 Buick Regal will have an easier job in driving up hills or pulling heavy equipment than 1999 Daihatsu Sirion.
Compare all specifications:
| 2004 Buick Regal | 1999 Daihatsu Sirion | |
| Make | Buick | Daihatsu |
| Model | Regal | Sirion |
| Year Released | 2004 | 1999 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3786 cc | 989 cc |
| Engine Cylinders | 6 cylinders | 3 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 251 HP | 53 HP |
| Engine RPM | 5200 RPM | 5200 RPM |
| Torque | 388 Nm | 88 Nm |
| Engine Bore Size | 97 mm | 71.9 mm |
| Engine Stroke Size | 86 mm | 81 mm |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1598 kg | 810 kg |
| Vehicle Length | 4990 mm | 3680 mm |
| Vehicle Width | 1850 mm | 1600 mm |
| Vehicle Height | 1440 mm | 1460 mm |
| Wheelbase Size | 2780 mm | 2350 mm |
| Fuel Tank Capacity | 64 L | 37 L |
