Think the housing etc is all plastic so it warps with repeated heating/cooling, think I read somewhere it was a big thing on the golf's, and someone makes a metal one, no idea if it's cheaper, I'll see if I can find itMy garage has only just had the chance to look at this, it is the thermostat, which is now apparently a complicated design including housing etc. Part alone is £200 plus and several hours to fit. Have VAG engineers gone insane? Slightly ridiculous on a fairly new car?
Thank you!Here's the thread I originally found
And a metal replacement
Just googlefoo'd EA888 metal thermostat housing