2003 Acura RSX vs. 2009 Audi S4
To start off, 2009 Audi S4 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Acura RSX. In addition, the cost of maintenance, including insurance, on 2003 Acura RSX would be higher. At 4,163 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 7000 RPM) has 143 more horse power than 2003 Acura RSX. (197 HP @ 7400 RPM) In normal driving conditions, 2009 Audi S4 should accelerate faster than 2003 Acura RSX. With that said, vehicle weight also plays an important factor in acceleration. 2003 Acura RSX weights approximately 336 kg more than 2009 Audi S4.
Because 2009 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Acura RSX. In wet, icy, snow, or gravel driving conditions, 2009 Audi S4 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 Audi S4 (410 Nm @ 3500 RPM) has 218 more torque (in Nm) than 2003 Acura RSX. (192 Nm @ 6000 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Acura RSX.
Compare all specifications:
| 2003 Acura RSX | 2009 Audi S4 | |
| Make | Acura | Audi |
| Model | RSX | S4 |
| Year Released | 2003 | 2009 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1998 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 197 HP | 340 HP |
| Engine RPM | 7400 RPM | 7000 RPM |
| Torque | 192 Nm | 410 Nm |
| Torque RPM | 6000 RPM | 3500 RPM |
| Engine Bore Size | 85.9 mm | 84.6 mm |
| Engine Stroke Size | 85.9 mm | 92.8 mm |
| Engine Compression Ratio | 11.0:1 | 18.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1266 kg | 930 kg |
| Vehicle Length | 4380 mm | 4580 mm |
| Vehicle Width | 1730 mm | 1780 mm |
| Vehicle Height | 1410 mm | 1400 mm |
| Wheelbase Size | 2580 mm | 2660 mm |
| Fuel Tank Capacity | 50 L | 63 L |
