One problem related to engine belts and pulleys has been reported for the 2012 Volkswagen Golf. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Volkswagen Golf based on all problems reported for the 2012 Golf.
At 2766 miles I was cruising down the highway at 70 mph on my way to work when the engine suddenly lost power and the epc light came on. The engine was completely unresponsive, I pulled off to the shoulder, called roadside assistance and was towed to the nearest dealer the service manager told me the water pump seized and seriously damaged the engine. I went to look and there was a big hole in the side of the engine. He told me they had to order new piston heads, rods, etc. . . Basically, needed to rebuild the engine. Speaking to the mechanic actually working on the car, he said it would probably need an engine replacement. They quickly realized repair wasn't possible and had a new engine en route. After a little searching online, I found that this has happened to at least 5 others (there are more now). It seems to be an issue with the water pump pulley. I am most concerned because vw denied they had ever heard of this. I have no confidence that the replacement engine will not suffer the same issue.