Bought a late 2008 with the TSI engine. Have always changed oil @ 5,000 miles, which is when I get the service reminders off the MFD.
The owner's manual says initial oil change at 5,000 miles and then 10,000 mile intervals after that.
I asked the dealer why the discrepancy between the MFD and owner's manual. "Change at 5,000 miles for 2008's. Probably a type in the manual - it's happened before. Doesn't matter if it's the FSI or TSI" Seems to me that VW wouldn't leave themselves open to warranty issues by publishing intervals twice as long as required.
Called the VW Care line. They looked up my VIN: 5k, then 10k intervals after that. Same as 2009's. Their explanation on the MFD is that the dealer forgot to reset the service reminder the first time, which doesn't seem to explain that I get it every 5,000 miles.
Does everybody else with a 2008 TSI get the service reminders every 5,000 miles?