 Where do I begin.  The Radio is a possessed and worthless waste of space. Battery Drains, Stops working for no reason, Finally just had to pull the fuse and ride silent for the last 6 months or so I owned it.  DEF/DPF issues:  These engines and system has never gotten the bugs worked out. Oil recommended my MB specs (read: required) cannot handle the 1200 degrees that the engines put out to try and "burn off" the soot. These engines eventually destroy themselves from the inside out.  EGR valve clogs, DEF tank sensors, N0x sensors fail, and once this starts it is THOUSANDS of dollars in repairs.  Ranging from about $1,100 to up to $6000.  The OM642 Engine is said by some "A Ticking timebomb" if it doesn't fail.. it will most certainly drain your wallet and your desire to continue to want to own it.  Speaking of Service: Regular Mercedes dealerships want NOTHING to do with these. They don't want to service them.  I had diehard diesel mechanics who refused to work on my Sprinter.  On a Sprinter Forum.. people have mechanics just throw parts at problems to the tune of thousands of dollars- to not actually fix the problem.. and they suggest driving your sprinter to Golden Colorado to have a guy repair it- I'm SERIOUS!  Lightbulbs: I changed nearly every lightbulb on this van. Felt like it was a full-time job. The headlights will blow if you hit a bad pothole. Advice by diehards "Just carry spares."    Speaking of what to carry with you- suggestion is to carry a scanner with you at all times to diagnose problems.  Why should I have to carry a scan tool with me to drive daily?  That is ludicrous!  I sold my Sprinter 2 years to the day and only put 14,000 miles on it when I owned it.  The longest I went without a "Check" light on the dash was 21 days!  I thought I was buying quality, I had hoped to run it to 500,000 Miles!  It started its "Death Cycle" at around 165K.  I feel bad for the person who bought it from the dealer I traded it into.  They have nothing to look forward to other then other than DEF/DPF problems and costly repairs in the THOU$AND$ in the very near future.