2006 BMW 550 vs. 2009 Daihatsu Sirion
To start off, 2009 Daihatsu Sirion is newer by 3 year(s). Which means there will be less support and parts availability for 2006 BMW 550. In addition, the cost of maintenance, including insurance, on 2006 BMW 550 would be higher. At 4,799 cc (8 cylinders), 2006 BMW 550 is equipped with a bigger engine. In terms of performance, 2006 BMW 550 (360 HP @ 6300 RPM) has 274 more horse power than 2009 Daihatsu Sirion. (86 HP @ 6000 RPM). In normal driving conditions, 2006 BMW 550 should accelerate faster than 2009 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 550 weights approximately 690 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 2006 BMW 550 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2006 BMW 550. However, in wet, icy, snow, or gravel driving conditions, 2009 Daihatsu Sirion, being front wheel drive (FWD), will offer much better control with better grip. 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 BMW 550 (488 Nm @ 3400 RPM) has 368 more torque (in Nm) than 2009 Daihatsu Sirion. (120 Nm @ 3200 RPM). This means 2006 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 2006 BMW 550 has manual transmission. 2006 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:
| 2006 BMW 550 | 2009 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | 550 | Sirion |
| Year Released | 2006 | 2009 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 1298 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 360 HP | 86 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 488 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 | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1725 kg | 1035 kg |
| Vehicle Length | 4880 mm | 3610 mm |
| Vehicle Width | 1850 mm | 1670 mm |
| Vehicle Height | 1470 mm | 1560 mm |
| Wheelbase Size | 2890 mm | 2440 mm |
| Fuel Consumption Overall | 12.4 L/100km | 6.2 L/100km |
| Fuel Tank Capacity | 70 L | 40 L |
