2006 BMW 650 vs. 2008 Daihatsu Sirion
To start off, 2008 Daihatsu Sirion is newer by 2 year(s). Which means there will be less support and parts availability for 2006 BMW 650. In addition, the cost of maintenance, including insurance, on 2006 BMW 650 would be higher. At 4,800 cc (8 cylinders), 2006 BMW 650 is equipped with a bigger engine. In terms of performance, 2006 BMW 650 (360 HP @ 6300 RPM) has 303 more horse power than 2008 Daihatsu Sirion. (57 HP @ 6000 RPM). In normal driving conditions, 2006 BMW 650 should accelerate faster than 2008 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 650 weights approximately 840 kg more than 2008 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 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 2006 BMW 650. However, in wet, icy, snow, or gravel driving conditions, 2008 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 650 (488 Nm @ 3400 RPM) has 400 more torque (in Nm) than 2008 Daihatsu Sirion. (88 Nm @ 3600 RPM). This means 2006 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 2008 Daihatsu Sirion.
Compare all specifications:
| 2006 BMW 650 | 2008 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | 650 | Sirion |
| Year Released | 2006 | 2008 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4800 cc | 989 cc |
| Engine Cylinders | 8 cylinders | 3 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 360 HP | 57 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 488 Nm | 88 Nm |
| Torque RPM | 3400 RPM | 3600 RPM |
| Engine Bore Size | 93 mm | 72 mm |
| Engine Stroke Size | 88.3 mm | 81 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 241 km/hour | 145 km/hour |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1730 kg | 890 kg |
| Vehicle Length | 4840 mm | 3700 mm |
| Vehicle Width | 1860 mm | 1600 mm |
| Vehicle Height | 1380 mm | 1460 mm |
| Wheelbase Size | 2790 mm | 2350 mm |
| Fuel Consumption Overall | 13.8 L/100km | 5.4 L/100km |
| Fuel Tank Capacity | 70 L | 40 L |
