2005 Acura RSX vs. 2009 Acura RDX
To start off, 2009 Acura RDX is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Acura RSX. In addition, the cost of maintenance, including insurance, on 2005 Acura RSX would be higher. At 2,300 cc (4 cylinders), 2009 Acura RDX is equipped with a bigger engine. In terms of performance, 2009 Acura RDX (240 HP @ 6000 RPM) has 80 more horse power than 2005 Acura RSX. (160 HP @ 5600 RPM) In normal driving conditions, 2009 Acura RDX should accelerate faster than 2005 Acura RSX. With that said, vehicle weight also plays an important factor in acceleration. 2009 Acura RDX weights approximately 176 kg more than 2005 Acura RSX. 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 2005 Acura RSX. 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 (353 Nm) has 162 more torque (in Nm) than 2005 Acura RSX. (191 Nm). This means 2009 Acura RDX will have an easier job in driving up hills or pulling heavy equipment than 2005 Acura RSX.
Compare all specifications:
| 2005 Acura RSX | 2009 Acura RDX | |
| Make | Acura | Acura |
| Model | RSX | RDX |
| Year Released | 2005 | 2009 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 1999 cc | 2300 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 160 HP | 240 HP |
| Engine RPM | 5600 RPM | 6000 RPM |
| Torque | 191 Nm | 353 Nm |
| Engine Compression Ratio | 9.8:1 | 11.0:1 |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1274 kg | 1450 kg |
| Vehicle Length | 4390 mm | 4600 mm |
| Vehicle Width | 1730 mm | 1880 mm |
| Vehicle Height | 1400 mm | 1660 mm |
| Wheelbase Size | 2580 mm | 2660 mm |
| Fuel Consumption | 6.9 L/100km | 10.7 L/100km |
| Fuel Consumption City | 9.4 L/100km | 13.8 L/100km |
| Fuel Consumption Overall | 8.4 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 50 L | 68 L |
