1991 Audi V8 vs. 2004 Audi S4
To start off, 2004 Audi S4 is newer by 13 year(s). Which means there will be less support and parts availability for 1991 Audi V8. In addition, the cost of maintenance, including insurance, on 1991 Audi V8 would be higher. At 4,172 cc (8 cylinders), 2004 Audi S4 is equipped with a bigger engine. In terms of performance, 2004 Audi S4 (339 HP @ 7000 RPM) has 92 more horse power than 1991 Audi V8. (247 HP @ 5800 RPM) In normal driving conditions, 2004 Audi S4 should accelerate faster than 1991 Audi V8. With that said, vehicle weight also plays an important factor in acceleration. 1991 Audi V8 weights approximately 70 kg more than 2004 Audi S4.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or 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, 2004 Audi S4 (410 Nm @ 3500 RPM) has 70 more torque (in Nm) than 1991 Audi V8. (340 Nm @ 4000 RPM). This means 2004 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi V8.
Compare all specifications:
| 1991 Audi V8 | 2004 Audi S4 | |
| Make | Audi | Audi |
| Model | V8 | S4 |
| Year Released | 1991 | 2004 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3562 cc | 4172 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 247 HP | 339 HP |
| Engine RPM | 5800 RPM | 7000 RPM |
| Torque | 340 Nm | 410 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 81.1 mm | 84.5 mm |
| Engine Stroke Size | 86.4 mm | 92.8 mm |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1790 kg | 1720 kg |
| Vehicle Length | 4870 mm | 4590 mm |
| Vehicle Width | 1820 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2710 mm | 2470 mm |
| Fuel Tank Capacity | 80 L | 63 L |
