1999 BMW M5 vs. 1984 BMW 725
To start off, 1999 BMW M5 is newer by 15 year(s). Which means there will be less support and parts availability for 1984 BMW 725. In addition, the cost of maintenance, including insurance, on 1984 BMW 725 would be higher. At 4,900 cc (8 cylinders), 1999 BMW M5 is equipped with a bigger engine. In terms of performance, 1999 BMW M5 (401 HP @ 7400 RPM) has 253 more horse power than 1984 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 1999 BMW M5 should accelerate faster than 1984 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, 1999 BMW M5 (499 Nm) has 284 more torque (in Nm) than 1984 BMW 725. (215 Nm). This means 1999 BMW M5 will have an easier job in driving up hills or pulling heavy equipment than 1984 BMW 725.
Compare all specifications:
| 1999 BMW M5 | 1984 BMW 725 | |
| Make | BMW | BMW |
| Model | M5 | 725 |
| Year Released | 1999 | 1984 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4900 cc | 2495 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 401 HP | 148 HP |
| Engine RPM | 7400 RPM | 5500 RPM |
| Torque | 499 Nm | 215 Nm |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4780 mm | 4870 mm |
| Vehicle Width | 1810 mm | 1810 mm |
| Vehicle Height | 1440 mm | 1440 mm |
| Wheelbase Size | 2730 mm | 2810 mm |
