First of all, personally I don‘t believe SQUAT anymore what a source ( that is living from selling parts and repairing ) is trying to tell me whats wrong with my car.
Many people on here, me included, use Carly and have that way much more control over their expenses and of course piece of mind.
Talking about that almost heart attack feeling when a light flickers in the dash.
More info about that subject:
http://www.m3post.com/forums/showthread.php?t=1231875