2009 BMW 650 vs. 2006 Daihatsu Sirion
To start off, 2009 BMW 650 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 2006 Daihatsu Sirion would be higher. At 4,799 cc (8 cylinders), 2009 BMW 650 is equipped with a bigger engine. In terms of performance, 2009 BMW 650 (360 HP @ 6300 RPM) has 274 more horse power than 2006 Daihatsu Sirion. (86 HP @ 6000 RPM). In normal driving conditions, 2009 BMW 650 should accelerate faster than 2006 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 650 weights approximately 790 kg more than 2006 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW 650 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 2009 BMW 650. However, in wet, icy, snow, or gravel driving conditions, 2006 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, 2009 BMW 650 (488 Nm @ 3400 RPM) has 368 more torque (in Nm) than 2006 Daihatsu Sirion. (120 Nm @ 3200 RPM). This means 2009 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 2006 Daihatsu Sirion.
Compare all specifications:
| 2009 BMW 650 | 2006 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | 650 | Sirion |
| Year Released | 2009 | 2006 |
| Body Type | Coupe | 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 Bore Size | 93 mm | 72.1 mm |
| Engine Stroke Size | 88.3 mm | 79.7 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1530 kg | 740 kg |
| Vehicle Length | 4830 mm | 3400 mm |
| Vehicle Height | 1860 mm | 1250 mm |
| Wheelbase Size | 2790 mm | 2440 mm |
| Fuel Consumption Overall | 8.6 L/100km | 4.8 L/100km |
| Fuel Tank Capacity | 70 L | 40 L |
