2009 Daihatsu Sirion vs. 2011 BMW 550
To start off, 2011 BMW 550 is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 2009 Daihatsu Sirion would be higher. At 4,400 cc (8 cylinders), 2011 BMW 550 is equipped with a bigger engine. In terms of performance, 2011 BMW 550 (400 HP @ 5500 RPM) has 298 more horse power than 2009 Daihatsu Sirion. (102 HP @ 6000 RPM) In normal driving conditions, 2011 BMW 550 should accelerate faster than 2009 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW 550 weights approximately 1064 kg more than 2009 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Daihatsu Sirion is four wheel drive (4WD), it will have significant more traction and grip than 2011 BMW 550. In wet, icy, snow, or gravel driving conditions, 2009 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, 2011 BMW 550 (609 Nm @ 1750 RPM) has 471 more torque (in Nm) than 2009 Daihatsu Sirion. (138 Nm @ 4400 RPM). This means 2011 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2009 Daihatsu Sirion. 2009 Daihatsu Sirion has automatic transmission and 2011 BMW 550 has manual transmission. 2011 BMW 550 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Daihatsu Sirion will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Daihatsu Sirion | 2011 BMW 550 | |
| Make | Daihatsu | BMW |
| Model | Sirion | 550 |
| Year Released | 2009 | 2011 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1495 cc | 4400 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 102 HP | 400 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 138 Nm | 609 Nm |
| Torque RPM | 4400 RPM | 1750 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 906 kg | 1970 kg |
| Vehicle Length | 3640 mm | 4905 mm |
| Vehicle Width | 1670 mm | 1859 mm |
| Vehicle Height | 1560 mm | 1463 mm |
| Wheelbase Size | 2440 mm | 2969 mm |
| Fuel Tank Capacity | 40 L | 70 L |
