To be pedantically correct, the 2.0TFSI has both!
It has a replaceable belt at the front end of the engine (the end furthest away from the flywheel
). This takes the drive from the crankshaft to only the exhaust camshaft. At the opposite end of the engine, a simplex chain takes drive from the exhaust camshaft and transmits drive to the inlet camshaft via an adjusting unit which provides the adjustment to the variable valve timing for the inlet valves.
And for all those who are having their timing belts replaced, please make sure they not only replace the actual belt, but also the two idler/relay rollers and the tensioning roller. If they order the timing belt KIT, rather than just the belt alone, all those bits are included.
And another very important piece of advice - I would strongly recommend getting the water pump changed (and the coolant renewed) at the same time as the timing belt. Although the water pump is not considered a 'maintenance item', it is fairly common for the water pump to fail very shortly after the timing belt is changed. This isn't a VAG-specific issue - it actually affects all engines from all manufactures who use the timing belt to drive the water pump. There is a reason why the pumps fail shortly after the timing belt change - if you wanna know more, then ask away.
