2001 Daihatsu U4 B vs. 2006 Daihatsu Sirion
To start off, 2006 Daihatsu Sirion is newer by 5 year(s). Which means there will be less support and parts availability for 2001 Daihatsu U4 B. In addition, the cost of maintenance, including insurance, on 2001 Daihatsu U4 B would be higher. At 1,298 cc (4 cylinders), 2006 Daihatsu Sirion is equipped with a bigger engine. In terms of performance, 2006 Daihatsu Sirion (86 HP @ 6000 RPM) has 24 more horse power than 2001 Daihatsu U4 B. (62 HP @ 6000 RPM) In normal driving conditions, 2006 Daihatsu Sirion should accelerate faster than 2001 Daihatsu U4 B. With that said, vehicle weight also plays an important factor in acceleration. 2001 Daihatsu U4 B weights approximately 80 kg more than 2006 Daihatsu Sirion.
Because 2001 Daihatsu U4 B is four wheel drive (4WD), it will have significant more traction and grip than 2006 Daihatsu Sirion. In wet, icy, snow, or gravel driving conditions, 2001 Daihatsu U4 B 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, 2006 Daihatsu Sirion (120 Nm @ 3200 RPM) has 12 more torque (in Nm) than 2001 Daihatsu U4 B. (108 Nm @ 3600 RPM). This means 2006 Daihatsu Sirion will have an easier job in driving up hills or pulling heavy equipment than 2001 Daihatsu U4 B. 2001 Daihatsu U4 B has automatic transmission and 2006 Daihatsu Sirion has manual transmission. 2006 Daihatsu Sirion will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2001 Daihatsu U4 B will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2001 Daihatsu U4 B | 2006 Daihatsu Sirion | |
| Make | Daihatsu | Daihatsu |
| Model | U4 B | Sirion |
| Year Released | 2001 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 660 cc | 1298 cc |
| Engine Cylinders | 3 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 62 HP | 86 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 108 Nm | 120 Nm |
| Torque RPM | 3600 RPM | 3200 RPM |
| Engine Bore Size | 68 mm | 72.1 mm |
| Engine Stroke Size | 60.5 mm | 79.7 mm |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 820 kg | 740 kg |
| Vehicle Length | 3400 mm | 3400 mm |
| Vehicle Height | 1580 mm | 1250 mm |
| Wheelbase Size | 2370 mm | 2440 mm |
