I only have 20K miles on my car with just a few track events and JCW BBK, not that it matters, and my pedal is decidedly mushy. I noticed it back in March at a DE, and then again this past weekend at a DE. I did flush the fluid right before the DE. And then went ahead and bled them after the DE just to make sure, but the fluid looked fine and there was no aire bubbles. The pedal is still mushy. I am thinking the master cylinder is internally leaking, but it seems unlikely with this low mileage. I am thinking this will not be cheap or easy to replace. I have not consulted my Bentley yet, and not sure if I can even do it if there is some complicated procedure required to get all of the air out of the ABS system. Any experience out there? I did have the dealership check for a mushy pedal at least once during the warranty period so I might get lucky with coverage.