2007 Acura RDX vs. 2005 Audi S4
To start off, 2007 Acura RDX is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi S4. In addition, the cost of maintenance, including insurance, on 2005 Audi S4 would be higher. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 4000 RPM) has 100 more horse power than 2007 Acura RDX. (240 HP @ 6000 RPM) In normal driving conditions, 2005 Audi S4 should accelerate faster than 2007 Acura RDX.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 57 more torque (in Nm) than 2007 Acura RDX. (353 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Acura RDX.
Compare all specifications:
| 2007 Acura RDX | 2005 Audi S4 | |
| Make | Acura | Audi |
| Model | RDX | S4 |
| Year Released | 2007 | 2005 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2299 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 240 HP | 340 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 353 Nm | 410 Nm |
| Engine Bore Size | 86.4 mm | 85 mm |
| Engine Stroke Size | 99.1 mm | 93 mm |
| Engine Compression Ratio | 8.8:1 | 11.0:1 |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4600 mm | 4550 mm |
| Vehicle Width | 1880 mm | 1770 mm |
| Vehicle Height | 1660 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2770 mm |
