 I've owned a 2015 Passat TSI SEL for about 18 months.  This is my 5th VW product over the past 40 years.  Granted my other cars have been Volvos during this same period.  I currently have both. Since I bought this car, I only need to drive about 45 minutes and my back is breaking.  Same for my passengers.  I wish VW would do something for owners of these vehicles - offer some "goodwill" or replace the seats.  I think there may be an issue with DVT (Deep Vein Thrombosis) similar to being on an airplane.  The seats are too short and therefore offer no support.  The suede / leather seats are hard as a rock!  Dealer told me to drive with the seat warmers on to add flexibility to the seats - pretty tough to do when it's 100 degrees outside !