2006 Audi S4 vs. 1999 Audi A4
To start off, 2006 Audi S4 is newer by 7 year(s). Which means there will be less support and parts availability for 1999 Audi A4. In addition, the cost of maintenance, including insurance, on 1999 Audi A4 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 @ 6800 RPM) has 177 more horse power than 1999 Audi A4. (163 HP @ 6000 RPM). In normal driving conditions, 2006 Audi S4 should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi A4 weights approximately 42 kg more than 2006 Audi S4.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 2006 Audi S4 (410 Nm @ 3500 RPM) has 176 more torque (in Nm) than 1999 Audi A4. (234 Nm @ 3200 RPM). This means 2006 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 2006 Audi S4 | 1999 Audi A4 | |
| Make | Audi | Audi |
| Model | S4 | A4 |
| Year Released | 2006 | 1999 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2393 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 340 HP | 163 HP |
| Engine RPM | 6800 RPM | 6000 RPM |
| Torque | 410 Nm | 234 Nm |
| Torque RPM | 3500 RPM | 3200 RPM |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1278 kg | 1320 kg |
| Vehicle Length | 4590 mm | 4480 mm |
| Vehicle Width | 1790 mm | 1740 mm |
| Vehicle Height | 1420 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2610 mm |
| Fuel Tank Capacity | 63 L | 70 L |
