With the introduction of the free BMW M4 Coupé to Gran Turismo 6 another glitch was introduced much like the one with the Mercedes-Benz AMG Vision Gran Turismo, allowing you to earn an inordinate amount of credits (50,000,000) in minutes, saving you the equivalent of $360 in microtransactions.
In the video below (courtesy of RajmanGaming HD) you can see the whole, easy process. Just remember to make sure that the BMW M4 is not your active car when you reboot the console to uninstall the patch.
The fact that a very similar glitch resurfaced with the new car pretty much confirms that Polyphony Digital either doesn’t know yet, doesn’t know how to solve it, or doesn’t care too much if you use this kind of method to grab yourself more credits. It’s almost safe to assume that we might very well see similar glitches appear with every new car introduced.