Whenever we post about a Volkswagen, comments about reliability (or, more specifically, the lack of it) inevitably follow. So few will be surprised that, with the latest update to TrueDelta’s car reliability stats, the 2012 Passat again received subpar marks. Though the big sedan’s score is better than earlier, it remains considerably worse than most other 2012s. Digging through the repair reports, a common cause emerges. Ignition coils aren’t failing. Nor are window regulators. Instead, the most common problem for these cars happens to be rattles.