2003 BMW X3 vs. 2010 Daihatsu Sirion
To start off, 2010 Daihatsu Sirion is newer by 7 year(s). Which means there will be less support and parts availability for 2003 BMW X3. In addition, the cost of maintenance, including insurance, on 2003 BMW X3 would be higher. At 2,492 cc (6 cylinders), 2003 BMW X3 is equipped with a bigger engine. In terms of performance, 2003 BMW X3 (185 HP @ 6000 RPM) has 116 more horse power than 2010 Daihatsu Sirion. (69 HP @ 6000 RPM). In normal driving conditions, 2003 BMW X3 should accelerate faster than 2010 Daihatsu Sirion.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or 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, 2003 BMW X3 (245 Nm @ 3500 RPM) has 151 more torque (in Nm) than 2010 Daihatsu Sirion. (94 Nm @ 3600 RPM). This means 2003 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2010 Daihatsu Sirion. 2003 BMW X3 has automatic transmission and 2010 Daihatsu Sirion has manual transmission. 2010 Daihatsu Sirion will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW X3 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW X3 | 2010 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | X3 | Sirion |
| Year Released | 2003 | 2010 |
| Body Type | SUV | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 998 cc |
| Engine Cylinders | 6 cylinders | 3 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 185 HP | 69 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 245 Nm | 94 Nm |
| Torque RPM | 3500 RPM | 3600 RPM |
| Engine Bore Size | 84 mm | 71.1 mm |
| Engine Stroke Size | 75 mm | 84 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
