1978 BMW 628 vs. 1986 BMW M6
To start off, 1986 BMW M6 is newer by 8 year(s). Which means there will be less support and parts availability for 1978 BMW 628. In addition, the cost of maintenance, including insurance, on 1978 BMW 628 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 97 more horse power than 1978 BMW 628. (185 HP @ 5800 RPM) In normal driving conditions, 1986 BMW M6 should accelerate faster than 1978 BMW 628.
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, 1986 BMW M6 (335 Nm @ 4500 RPM) has 75 more torque (in Nm) than 1978 BMW 628. (260 Nm @ 4000 RPM). This means 1986 BMW M6 will have an easier job in driving up hills or pulling heavy equipment than 1978 BMW 628.
Compare all specifications:
| 1978 BMW 628 | 1986 BMW M6 | |
| Make | BMW | BMW |
| Model | 628 | M6 |
| Year Released | 1978 | 1986 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2997 cc | 3453 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 185 HP | 282 HP |
| Engine RPM | 5800 RPM | 6500 RPM |
| Torque | 260 Nm | 335 Nm |
| Torque RPM | 4000 RPM | 4500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Length | 4760 mm | 4760 mm |
| Vehicle Width | 1760 mm | 1730 mm |
| Vehicle Height | 1390 mm | 1360 mm |
| Wheelbase Size | 2640 mm | 2630 mm |
| Fuel Tank Capacity | 70 L | 70 L |
