Had a few teething issues with my diesel, a few seal leaks. Nothing wrong with the emissions to date (27k miles so far). The people you typically see post have a problem that they need resolved. So they're going to be loud as they need a resolution to a problem. I remember a presentation I sat through long ago that basically said for every 10 complainers, you only have 1 person that talks up the good experience they have for a given product. That was many years ago though and I wonder if that stat still holds up today.