2009 Audi A4 vs. 2013 Acura RDX
To start off, 2013 Acura RDX is newer by 4 year(s). Which means there will be less support and parts availability for 2009 Audi A4. In addition, the cost of maintenance, including insurance, on 2009 Audi A4 would be higher. At 2,300 cc (4 cylinders), 2013 Acura RDX is equipped with a bigger engine. In terms of performance, 2013 Acura RDX (240 HP @ 6200 RPM) has 82 more horse power than 2009 Audi A4. (158 HP @ 4500 RPM) In normal driving conditions, 2013 Acura RDX should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2013 Acura RDX weights approximately 819 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 Acura RDX is all wheel drive (AWD), it will have significant more traction and grip than 2009 Audi A4. In wet, icy, snow, or gravel driving conditions, 2013 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, 2013 Acura RDX (340 Nm @ 5000 RPM) has 90 more torque (in Nm) than 2009 Audi A4. (250 Nm @ 1500 RPM). This means 2013 Acura RDX will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2013 Acura RDX | |
| Make | Audi | Acura |
| Model | A4 | RDX |
| Year Released | 2009 | 2013 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1798 cc | 2300 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 158 HP | 240 HP |
| Engine RPM | 4500 RPM | 6200 RPM |
| Torque | 250 Nm | 340 Nm |
| Torque RPM | 1500 RPM | 5000 RPM |
| Engine Bore Size | 82.5 mm | 89 mm |
| Engine Stroke Size | 84.1 mm | 93 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | AWD |
| Transmission Type | Automatic | 6-speed automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 930 kg | 1749 kg |
| Vehicle Length | 4710 mm | 4660 mm |
| Vehicle Width | 2010 mm | 1872 mm |
| Vehicle Height | 1430 mm | 1678 mm |
| Wheelbase Size | 2810 mm | 2685 mm |
| Fuel Tank Capacity | 65 L | 60 L |
