2009 BMW M6 vs. 1977 BMW 728
To start off, 2009 BMW M6 is newer by 32 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 4,999 cc (10 cylinders), 2009 BMW M6 is equipped with a bigger engine. In terms of performance, 2009 BMW M6 (500 HP @ 7750 RPM) has 330 more horse power than 1977 BMW 728. (170 HP @ 6000 RPM). In normal driving conditions, 2009 BMW M6 should accelerate faster than 1977 BMW 728. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 728 weights approximately 256 kg more than 2009 BMW M6.
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, 2009 BMW M6 (519 Nm @ 6100 RPM) has 284 more torque (in Nm) than 1977 BMW 728. (235 Nm @ 3700 RPM). This means 2009 BMW M6 will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 728.
Compare all specifications:
| 2009 BMW M6 | 1977 BMW 728 | |
| Make | BMW | BMW |
| Model | M6 | 728 |
| Year Released | 2009 | 1977 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4999 cc | 2788 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 500 HP | 170 HP |
| Engine RPM | 7750 RPM | 6000 RPM |
| Torque | 519 Nm | 235 Nm |
| Torque RPM | 6100 RPM | 3700 RPM |
| Engine Compression Ratio | 12.0:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1280 kg | 1536 kg |
| Vehicle Length | 4880 mm | 4870 mm |
| Vehicle Width | 1860 mm | 1810 mm |
| Vehicle Height | 1380 mm | 1440 mm |
| Wheelbase Size | 2790 mm | 2800 mm |
| Fuel Tank Capacity | 70 L | 85 L |
