2008 BMW 550 vs. 2009 Daihatsu Sirion
To start off, 2009 Daihatsu Sirion is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW 550. In addition, the cost of maintenance, including insurance, on 2008 BMW 550 would be higher. At 4,799 cc, 2008 BMW 550 is equipped with a bigger engine. In terms of performance, 2008 BMW 550 (360 HP @ 6300 RPM) has 274 more horse power than 2009 Daihatsu Sirion. (86 HP @ 6000 RPM). In normal driving conditions, 2008 BMW 550 should accelerate faster than 2009 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 550 weights approximately 720 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 2008 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, 2008 BMW 550 (490 Nm @ 3400 RPM) has 370 more torque (in Nm) than 2009 Daihatsu Sirion. (120 Nm @ 3200 RPM). This means 2008 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2009 Daihatsu Sirion.
Compare all specifications:
| 2008 BMW 550 | 2009 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | 550 | Sirion |
| Year Released | 2008 | 2009 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 1298 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 360 HP | 86 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 490 Nm | 120 Nm |
| Torque RPM | 3400 RPM | 3200 RPM |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1660 kg | 940 kg |
| Vehicle Length | 4860 mm | 3610 mm |
| Vehicle Width | 1850 mm | 1560 mm |
| Vehicle Height | 1470 mm | 1670 mm |
| Wheelbase Size | 2890 mm | 2440 mm |
| Fuel Consumption Overall | 7.8 L/100km | 8.9 L/100km |
| Fuel Tank Capacity | 70 L | 40 L |
