2005 BMW 520 vs. 1984 BMW 725
To start off, 2005 BMW 520 is newer by 21 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 2,495 cc (6 cylinders), 1984 BMW 725 is equipped with a bigger engine. In terms of performance, 2005 BMW 520 (170 HP @ 6000 RPM) has 22 more horse power than 1984 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 2005 BMW 520 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, 1984 BMW 725 (215 Nm @ 4000 RPM) has 5 more torque (in Nm) than 2005 BMW 520. (210 Nm @ 3500 RPM). This means 1984 BMW 725 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 520.
Compare all specifications:
| 2005 BMW 520 | 1984 BMW 725 | |
| Make | BMW | BMW |
| Model | 520 | 725 |
| Year Released | 2005 | 1984 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 2495 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 170 HP | 148 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 210 Nm | 215 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Compression Ratio | 10.0:1 | 9.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4810 mm | 4870 mm |
| Vehicle Width | 1810 mm | 1810 mm |
| Vehicle Height | 1450 mm | 1440 mm |
| Wheelbase Size | 2840 mm | 2810 mm |
