1986 BMW M6 vs. 2005 BMW 525
To start off, 2005 BMW 525 is newer by 19 year(s). Which means there will be less support and parts availability for 1986 BMW M6. In addition, the cost of maintenance, including insurance, on 1986 BMW M6 would be higher. At 3,453 cc (6 cylinders), 1986 BMW M6 is equipped with a bigger engine. In terms of performance, 1986 BMW M6 (282 HP @ 6500 RPM) has 121 more horse power than 2005 BMW 525. (161 HP @ 4000 RPM). In normal driving conditions, 1986 BMW M6 should accelerate faster than 2005 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 1986 BMW M6 weights approximately 15 kg more than 2005 BMW 525. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2005 BMW 525 (351 Nm @ 2000 RPM) has 16 more torque (in Nm) than 1986 BMW M6. (335 Nm @ 4500 RPM). This means 2005 BMW 525 will have an easier job in driving up hills or pulling heavy equipment than 1986 BMW M6. 2005 BMW 525 has automatic transmission and 1986 BMW M6 has manual transmission. 1986 BMW M6 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW 525 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1986 BMW M6 | 2005 BMW 525 | |
| Make | BMW | BMW |
| Model | M6 | 525 |
| Year Released | 1986 | 2005 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3453 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 282 HP | 161 HP |
| Engine RPM | 6500 RPM | 4000 RPM |
| Torque | 335 Nm | 351 Nm |
| Torque RPM | 4500 RPM | 2000 RPM |
| Engine Bore Size | 93.4 mm | 80 mm |
| Engine Stroke Size | 84 mm | 82.8 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1505 kg | 1490 kg |
| Vehicle Length | 4760 mm | 4850 mm |
| Vehicle Width | 1730 mm | 1850 mm |
| Vehicle Height | 1360 mm | 1470 mm |
| Wheelbase Size | 2630 mm | 2730 mm |
| Fuel Tank Capacity | 70 L | 70 L |
