The OP never said that he went back to the selling (Honda) dealer. He said he went to an independent to get a diagnosis.

I can't see any value in dealing with lawyers or the selling dealer. OP seems to know exactly what he bought and what his rights are. Now it is just time to pay to fix it, or dump it.

A side point, but if it is taking six pages to display this thread, you may want to change the settings in User CP, Options. I use 40 posts per page myself. Saves a lot of time.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue