It does look a bit low...
To my knowledge the only way of adjusting the door is by loosening the bolts on the hinges and they are very awkward to get to...maybe the monkeys couldn't be bothered doing a proper job...
doesnt look to bad to me, if it doesnt leak id say leave it
Well, its not just the aesthetics, it doesnt shut with a light push like the nearside door does, although it doesnt exactly need a shove.
Im just concerned that although its not a big problem at the moment, it may lead to leaks and other problems down the line. i.e. when its out of warranty!
They can also adjust the door catch on the door pillar by unscrewing the screws and moving it up/down or inwards/outwards. This will affect how it closes and how tight it is to the door seals - trial and error to get it right.