2006 Audi S4 vs. 2003 BMW 320
To start off, 2006 Audi S4 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 BMW 320. In addition, the cost of maintenance, including insurance, on 2003 BMW 320 would be higher. At 4,163 cc (8 cylinders), 2006 Audi S4 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (340 HP @ 7000 RPM) has 192 more horse power than 2003 BMW 320. (148 HP @ 5900 RPM). In normal driving conditions, 2006 Audi S4 should accelerate faster than 2003 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi S4 weights approximately 65 kg more than 2003 BMW 320. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 BMW 320 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2003 BMW 320. However, in wet, icy, snow, or gravel driving conditions, 2006 Audi S4, being front wheel drive (FWD), will offer much better control with better grip. 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, 2006 Audi S4 (410 Nm @ 3500 RPM) has 200 more torque (in Nm) than 2003 BMW 320. (210 Nm @ 3750 RPM). This means 2006 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 320.
Compare all specifications:
| 2006 Audi S4 | 2003 BMW 320 | |
| Make | Audi | BMW |
| Model | S4 | 320 |
| Year Released | 2006 | 2003 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1995 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 148 HP |
| Engine RPM | 7000 RPM | 5900 RPM |
| Torque | 410 Nm | 210 Nm |
| Torque RPM | 3500 RPM | 3750 RPM |
| Engine Bore Size | 84.6 mm | 84 mm |
| Engine Stroke Size | 93 mm | 90 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1530 kg | 1465 kg |
| Vehicle Length | 4590 mm | 4490 mm |
| Vehicle Width | 1790 mm | 1760 mm |
| Vehicle Height | 1420 mm | 1380 mm |
| Wheelbase Size | 2660 mm | 2730 mm |
| Fuel Tank Capacity | 63 L | 63 L |
