2009 Acura RDX vs. 2005 Audi A4
To start off, 2009 Acura RDX is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A4. In addition, the cost of maintenance, including insurance, on 2005 Audi A4 would be higher. At 2,983 cc (6 cylinders), 2005 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Acura RDX (237 HP @ 6000 RPM) has 17 more horse power than 2005 Audi A4. (220 HP @ 6300 RPM). In normal driving conditions, 2009 Acura RDX should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Acura RDX weights approximately 139 kg more than 2005 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2005 Audi A4 (300 Nm @ 3200 RPM) has 40 more torque (in Nm) than 2009 Acura RDX. (260 Nm @ 4500 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Acura RDX.
Compare all specifications:
| 2009 Acura RDX | 2005 Audi A4 | |
| Make | Acura | Audi |
| Model | RDX | A4 |
| Year Released | 2009 | 2005 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2297 cc | 2983 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 237 HP | 220 HP |
| Engine RPM | 6000 RPM | 6300 RPM |
| Torque | 260 Nm | 300 Nm |
| Torque RPM | 4500 RPM | 3200 RPM |
| Engine Compression Ratio | 8.8:1 | 10.1:1 |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1784 kg | 1645 kg |
| Vehicle Length | 4600 mm | 4550 mm |
| Vehicle Width | 1880 mm | 1770 mm |
| Vehicle Height | 1660 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2660 mm |
| Fuel Consumption Highway | 10.7 L/100km | 9.6 L/100km |
| Fuel Consumption City | 13.8 L/100km | 13.2 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 11 L/100km |
| Fuel Tank Capacity | 68 L | 66 L |
