2003 BMW 730 vs. 2008 Daihatsu Sirion
To start off, 2008 Daihatsu Sirion is newer by 5 year(s). Which means there will be less support and parts availability for 2003 BMW 730. In addition, the cost of maintenance, including insurance, on 2003 BMW 730 would be higher. At 2,999 cc (6 cylinders), 2003 BMW 730 is equipped with a bigger engine. In terms of performance, 2003 BMW 730 (228 HP @ 5900 RPM) has 171 more horse power than 2008 Daihatsu Sirion. (57 HP @ 6000 RPM). In normal driving conditions, 2003 BMW 730 should accelerate faster than 2008 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 730 weights approximately 900 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 2003 BMW 730 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 2003 BMW 730. 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, 2003 BMW 730 (300 Nm @ 3500 RPM) has 212 more torque (in Nm) than 2008 Daihatsu Sirion. (88 Nm @ 3600 RPM). This means 2003 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2008 Daihatsu Sirion. 2003 BMW 730 has automatic transmission and 2008 Daihatsu Sirion has manual transmission. 2008 Daihatsu Sirion will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 730 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW 730 | 2008 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | 730 | Sirion |
| Year Released | 2003 | 2008 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2999 cc | 989 cc |
| Engine Cylinders | 6 cylinders | 3 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 228 HP | 57 HP |
| Engine RPM | 5900 RPM | 6000 RPM |
| Torque | 300 Nm | 88 Nm |
| Torque RPM | 3500 RPM | 3600 RPM |
| Engine Bore Size | 84.1 mm | 72 mm |
| Engine Stroke Size | 90 mm | 81 mm |
| Engine Compression Ratio | 10.2:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1790 kg | 890 kg |
| Vehicle Length | 5040 mm | 3700 mm |
| Vehicle Width | 1910 mm | 1600 mm |
| Vehicle Height | 1500 mm | 1460 mm |
| Wheelbase Size | 3000 mm | 2350 mm |
| Fuel Tank Capacity | 63 L | 40 L |
