2005 Audi S4 vs. 1999 Audi A4
To start off, 2005 Audi S4 is newer by 6 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 4,161 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 217 more horse power than 1999 Audi A4. (123 HP @ 5800 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 450 kg more than 1999 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 242 more torque (in Nm) than 1999 Audi A4. (168 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 2005 Audi S4 | 1999 Audi A4 | |
| Make | Audi | Audi |
| Model | S4 | A4 |
| Year Released | 2005 | 1999 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 1781 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 123 HP |
| Engine RPM | 6300 RPM | 5800 RPM |
| Torque | 410 Nm | 168 Nm |
| Engine Bore Size | 85 mm | 81 mm |
| Engine Stroke Size | 93 mm | 86.4 mm |
| Engine Compression Ratio | 11.0:1 | 10.3:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1840 kg | 1390 kg |
| Vehicle Length | 4580 mm | 4480 mm |
| Vehicle Width | 1780 mm | 1740 mm |
| Vehicle Height | 1400 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2610 mm |
| Fuel Tank Capacity | 63 L | 60 L |
