1981 BMW 725 vs. 2001 BMW M3
To start off, 2001 BMW M3 is newer by 20 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 3,246 cc (6 cylinders), 2001 BMW M3 is equipped with a bigger engine. In terms of performance, 2001 BMW M3 (342 HP @ 7400 RPM) has 194 more horse power than 1981 BMW 725. (148 HP @ 5500 RPM) In normal driving conditions, 2001 BMW M3 should accelerate faster than 1981 BMW 725.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 2001 BMW M3 (502 Nm) has 287 more torque (in Nm) than 1981 BMW 725. (215 Nm). This means 2001 BMW M3 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 725.
Compare all specifications:
| 1981 BMW 725 | 2001 BMW M3 | |
| Make | BMW | BMW |
| Model | 725 | M3 |
| Year Released | 1981 | 2001 |
| Engine Position | Front | Front |
| Engine Size | 2493 cc | 3246 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 342 HP |
| Engine RPM | 5500 RPM | 7400 RPM |
| Torque | 215 Nm | 502 Nm |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Length | 4870 mm | 4490 mm |
| Vehicle Width | 1810 mm | 1760 mm |
| Vehicle Height | 1440 mm | 1380 mm |
| Wheelbase Size | 2810 mm | 2730 mm |
