Well, in some cases certified is only as good as the person doing it and business ethics of the individuals involved unfortunately. The BMW mothership puts out the guidelines for certification, but if the individual dealer/tech wants to flat rate the job and take the money without doing the work or push cars out that don't meet the guidelines that is an individual case of deception.

If the next oil analysis shows similar results maybe all you could do is find the right symptoms for them to diagnose that will eventually lead to engine replacement under CPO as the correction. In which case you could consider yourself ahead as you will have a new engine.

Just get all the info you can to back up your claim, if you suspect excessive piston/ring wear maybe have a cylinder leakdown test done.

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RIP 4.6is.....

2003 4.6is