2009 Acura RDX vs. 2007 Daihatsu Sirion
To start off, 2009 Acura RDX is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 2007 Daihatsu Sirion would be higher. At 2,297 cc (4 cylinders), 2009 Acura RDX is equipped with a bigger engine. In terms of performance, 2009 Acura RDX (237 HP @ 6000 RPM) has 151 more horse power than 2007 Daihatsu Sirion. (86 HP @ 6000 RPM). In normal driving conditions, 2009 Acura RDX should accelerate faster than 2007 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2009 Acura RDX weights approximately 844 kg more than 2007 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Acura RDX is four wheel drive (4WD), it will have significant more traction and grip than 2007 Daihatsu Sirion. In wet, icy, snow, or gravel driving conditions, 2009 Acura RDX 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, 2009 Acura RDX (260 Nm @ 4500 RPM) has 140 more torque (in Nm) than 2007 Daihatsu Sirion. (120 Nm @ 3200 RPM). This means 2009 Acura RDX will have an easier job in driving up hills or pulling heavy equipment than 2007 Daihatsu Sirion.
Compare all specifications:
| 2009 Acura RDX | 2007 Daihatsu Sirion | |
| Make | Acura | Daihatsu |
| Model | RDX | Sirion |
| Year Released | 2009 | 2007 |
| Body Type | SUV | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2297 cc | 1297 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 86 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 260 Nm | 120 Nm |
| Torque RPM | 4500 RPM | 3200 RPM |
| Engine Compression Ratio | 8.8:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1784 kg | 940 kg |
| Vehicle Length | 4600 mm | 3610 mm |
| Vehicle Width | 1880 mm | 1670 mm |
| Vehicle Height | 1660 mm | 1560 mm |
| Wheelbase Size | 2660 mm | 2440 mm |
| Fuel Consumption Overall | 12.4 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 68 L | 40 L |
