are there any lawyers on this forum?

[Sloan]

I am a commercial litigation lawyer, but not a class action lawyer. Based on my limited knowledge of the 'class action' issues, I think that LoveBunny is most likely correct - the essence of qualifying for a class action is that the nature of the claims and defenses are all so similar, that the court could fairly (to both sides) adjudicate all of the issues in one forum, as the proof to be offered by both sides would be nearly identical in every case. I think that would be tough to establish where the Defendant (Porsche) would want to be able to introduce evidence of how an individual motor had been used / abused / not cared for properly by the various owners, service history, etc.

However, now that you have me thinking about it, I guess it would not be all that different from the medical device class actions, where doctors or device makers would want to show how each patient had different problems, health history, risk factors, etc., so perhaps it would just be a matter of finding a good lawyer / firm to do it ...