1977 BMW 728 vs. 2007 BMW 525
To start off, 2007 BMW 525 is newer by 30 year(s). Which means there will be less support and parts availability for 1977 BMW 728. In addition, the cost of maintenance, including insurance, on 1977 BMW 728 would be higher. At 2,788 cc (6 cylinders), 1977 BMW 728 is equipped with a bigger engine. In terms of performance, 2007 BMW 525 (215 HP @ 6500 RPM) has 45 more horse power than 1977 BMW 728. (170 HP @ 6000 RPM) In normal driving conditions, 2007 BMW 525 should accelerate faster than 1977 BMW 728. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 525 weights approximately 29 kg more than 1977 BMW 728. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW 525 is four wheel drive (4WD), it will have significant more traction and grip than 1977 BMW 728. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 BMW 525 (250 Nm @ 2750 RPM) has 15 more torque (in Nm) than 1977 BMW 728. (235 Nm @ 3700 RPM). This means 2007 BMW 525 will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 728.
Compare all specifications:
| 1977 BMW 728 | 2007 BMW 525 | |
| Make | BMW | BMW |
| Model | 728 | 525 |
| Year Released | 1977 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2788 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 170 HP | 215 HP |
| Engine RPM | 6000 RPM | 6500 RPM |
| Torque | 235 Nm | 250 Nm |
| Torque RPM | 3700 RPM | 2750 RPM |
| Engine Bore Size | 86 mm | 78.8 mm |
| Engine Stroke Size | 80 mm | 82 mm |
| Engine Compression Ratio | 9.0:1 | 11.0:1 |
| Top Speed | 193 km/hour | 237 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1536 kg | 1565 kg |
| Vehicle Length | 4870 mm | 4850 mm |
| Vehicle Width | 1810 mm | 1850 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2800 mm | 2890 mm |
| Fuel Tank Capacity | 85 L | 70 L |
