2005 BMW 525 vs. 1985 BMW M6
To start off, 2005 BMW 525 is newer by 20 year(s). Which means there will be less support and parts availability for 1985 BMW M6. In addition, the cost of maintenance, including insurance, on 1985 BMW M6 would be higher. At 3,451 cc (6 cylinders), 1985 BMW M6 is equipped with a bigger engine. In terms of performance, 1985 BMW M6 (282 HP @ 6500 RPM) has 67 more horse power than 2005 BMW 525. (215 HP @ 6500 RPM) In normal driving conditions, 1985 BMW M6 should accelerate faster than 2005 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 525 weights approximately 270 kg more than 1985 BMW M6.
Because 2005 BMW 525 is four wheel drive (4WD), it will have significant more traction and grip than 1985 BMW M6. In wet, icy, snow, or gravel driving conditions, 2005 BMW 525 will offer significantly more control. 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, 1985 BMW M6 (334 Nm @ 4500 RPM) has 84 more torque (in Nm) than 2005 BMW 525. (250 Nm @ 2750 RPM). This means 1985 BMW M6 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 525. 2005 BMW 525 has automatic transmission and 1985 BMW M6 has manual transmission. 1985 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:
| 2005 BMW 525 | 1985 BMW M6 | |
| Make | BMW | BMW |
| Model | 525 | M6 |
| Year Released | 2005 | 1985 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 3451 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 282 HP |
| Engine RPM | 6500 RPM | 6500 RPM |
| Torque | 250 Nm | 334 Nm |
| Torque RPM | 2750 RPM | 4500 RPM |
| Engine Bore Size | 82 mm | 93.4 mm |
| Engine Stroke Size | 78.8 mm | 84 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1775 kg | 1505 kg |
| Vehicle Length | 4850 mm | 4760 mm |
| Vehicle Width | 1850 mm | 1730 mm |
| Vehicle Height | 1500 mm | 1360 mm |
| Wheelbase Size | 2790 mm | 2630 mm |
| Fuel Tank Capacity | 70 L | 70 L |
