2007 Audi A6 vs. 1981 BMW 725
To start off, 2007 Audi A6 is newer by 26 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 2,493 cc (6 cylinders), 1981 BMW 725 is equipped with a bigger engine. In terms of performance, 2007 Audi A6 (168 HP @ 6000 RPM) has 20 more horse power than 1981 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 2007 Audi A6 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, 2007 Audi A6, 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, 2007 Audi A6 (231 Nm @ 3200 RPM) has 16 more torque (in Nm) than 1981 BMW 725. (215 Nm @ 4000 RPM). This means 2007 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 725.
Compare all specifications:
| 2007 Audi A6 | 1981 BMW 725 | |
| Make | Audi | BMW |
| Model | A6 | 725 |
| Year Released | 2007 | 1981 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2393 cc | 2493 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 168 HP | 148 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 231 Nm | 215 Nm |
| Torque RPM | 3200 RPM | 4000 RPM |
| Engine Bore Size | 81 mm | 86 mm |
| Engine Stroke Size | 77.4 mm | 71.6 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4800 mm | 4870 mm |
| Vehicle Width | 1820 mm | 1810 mm |
| Vehicle Height | 1460 mm | 1440 mm |
| Wheelbase Size | 2770 mm | 2810 mm |
