2000 Audi S4 vs. 1981 BMW 725
To start off, 2000 Audi S4 is newer by 19 year(s). Which means there will be less support and parts availability for 1981 BMW 725. In addition, the cost of maintenance, including insurance, on 1981 BMW 725 would be higher. At 2,701 cc (6 cylinders), 2000 Audi S4 is equipped with a bigger engine. In terms of performance, 2000 Audi S4 (250 HP @ 6500 RPM) has 102 more horse power than 1981 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 2000 Audi S4 should accelerate faster than 1981 BMW 725.
Because 1981 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 1981 BMW 725. However, in wet, icy, snow, or gravel driving conditions, 2000 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, 2000 Audi S4 (350 Nm) has 135 more torque (in Nm) than 1981 BMW 725. (215 Nm). This means 2000 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 725.
Compare all specifications:
| 2000 Audi S4 | 1981 BMW 725 | |
| Make | Audi | BMW |
| Model | S4 | 725 |
| Year Released | 2000 | 1981 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2701 cc | 2493 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 250 HP | 148 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 350 Nm | 215 Nm |
| Engine Bore Size | 81 mm | 86 mm |
| Engine Stroke Size | 86.4 mm | 71.6 mm |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4490 mm | 4870 mm |
| Vehicle Width | 1740 mm | 1810 mm |
| Vehicle Height | 1400 mm | 1440 mm |
| Wheelbase Size | 2610 mm | 2810 mm |
