1988 BMW M6 vs. 1991 Porsche 928
To start off, 1991 Porsche 928 is newer by 3 year(s). Which means there will be less support and parts availability for 1988 BMW M6. In addition, the cost of maintenance, including insurance, on 1988 BMW M6 would be higher. At 4,663 cc (8 cylinders), 1991 Porsche 928 is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (306 HP @ 5900 RPM) has 24 more horse power than 1988 BMW M6. (282 HP @ 6500 RPM) In normal driving conditions, 1991 Porsche 928 should accelerate faster than 1988 BMW M6. With that said, vehicle weight also plays an important factor in acceleration. 1991 Porsche 928 weights approximately 25 kg more than 1988 BMW M6. 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, 1991 Porsche 928 (408 Nm @ 4100 RPM) has 74 more torque (in Nm) than 1988 BMW M6. (334 Nm @ 4500 RPM). This means 1991 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 1988 BMW M6.
Compare all specifications:
| 1988 BMW M6 | 1991 Porsche 928 | |
| Make | BMW | Porsche |
| Model | M6 | 928 |
| Year Released | 1988 | 1991 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3453 cc | 4663 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 282 HP | 306 HP |
| Engine RPM | 6500 RPM | 5900 RPM |
| Torque | 334 Nm | 408 Nm |
| Torque RPM | 4500 RPM | 4100 RPM |
| Engine Bore Size | 93.4 mm | 97 mm |
| Engine Stroke Size | 84 mm | 78.9 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1505 kg | 1530 kg |
| Vehicle Length | 4760 mm | 4530 mm |
| Vehicle Width | 1730 mm | 2060 mm |
| Vehicle Height | 1360 mm | 1290 mm |
| Wheelbase Size | 2630 mm | 2510 mm |
| Fuel Tank Capacity | 70 L | 76 L |
