I got and email from VW recommending fuel saving techniques stating that (for 6spd) as you are slowing down on approach to stop, leave it in gear until you need to depress the clutch (before it dies) until you stop - apparently fuel management kills fuel to the engine, inherently increasing gas mileage, where idling (with the clutch depressed while slowing down) requires the engine to receive a steady supply of fuel.
I'm no mechanic by any means, but how does that sorcery work?? is the engine just burning off remaining fuel in the cylinder? Or is it running on unicorn shit, skittles and the hopes of tomorrows youth?
Been doing this for about 500miles and I don't notice a huge difference - maybe .5-1mpg delta.