2006 Audi S4 vs. 1980 BMW 725
To start off, 2006 Audi S4 is newer by 26 year(s). Which means there will be less support and parts availability for 1980 BMW 725. In addition, the cost of maintenance, including insurance, on 1980 BMW 725 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 1980 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 2006 Audi S4 should accelerate faster than 1980 BMW 725.
Because 1980 BMW 725 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 1980 BMW 725. 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 195 more torque (in Nm) than 1980 BMW 725. (215 Nm @ 4000 RPM). This means 2006 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1980 BMW 725.
Compare all specifications:
| 2006 Audi S4 | 1980 BMW 725 | |
| Make | Audi | BMW |
| Model | S4 | 725 |
| Year Released | 2006 | 1980 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2495 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 340 HP | 148 HP |
| Engine RPM | 7000 RPM | 5500 RPM |
| Torque | 410 Nm | 215 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84.6 mm | 86 mm |
| Engine Stroke Size | 93 mm | 71.6 mm |
| Engine Compression Ratio | 11.0:1 | 9.6:1 |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4590 mm | 4870 mm |
| Vehicle Width | 1790 mm | 1810 mm |
| Vehicle Height | 1420 mm | 1440 mm |
| Wheelbase Size | 2660 mm | 2810 mm |
