2009 BMW 550 vs. 2011 Daihatsu Sirion
To start off, 2011 Daihatsu Sirion is newer by 2 year(s). Which means there will be less support and parts availability for 2009 BMW 550. In addition, the cost of maintenance, including insurance, on 2009 BMW 550 would be higher. At 4,799 cc, 2009 BMW 550 is equipped with a bigger engine. In terms of performance, 2009 BMW 550 (362 HP @ 6300 RPM) has 293 more horse power than 2011 Daihatsu Sirion. (69 HP @ 6000 RPM). In normal driving conditions, 2009 BMW 550 should accelerate faster than 2011 Daihatsu Sirion.
Because 2011 Daihatsu Sirion is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 550. In wet, icy, snow, or gravel driving conditions, 2011 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, 2009 BMW 550 (490 Nm @ 3400 RPM) has 396 more torque (in Nm) than 2011 Daihatsu Sirion. (94 Nm @ 3600 RPM). This means 2009 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2011 Daihatsu Sirion. 2009 BMW 550 has automatic transmission and 2011 Daihatsu Sirion has manual transmission. 2011 Daihatsu Sirion will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW 550 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW 550 | 2011 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | 550 | Sirion |
| Year Released | 2009 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 998 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 362 HP | 69 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 490 Nm | 94 Nm |
| Torque RPM | 3400 RPM | 3600 RPM |
| Engine Bore Size | 93 mm | 71.1 mm |
| Engine Stroke Size | 88.3 mm | 84 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 5.9 seconds | 13.9 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
