It can depend on the age of your children. We have a Passat saloon, a baby and a toddler and will soon be changing car. Like many saloons, the Passat slopes from the centre of the roof towards the tail and the net effect is to make the rere door opening lower and narrower. If you're reaching in to seat a toddler (think three stone sack of struggling potatoes) you really don't need to be leaning in and down. Anything with uncomprised rere door openings and/or a bit of height is better for the health and safety (less time with door open and back to the road) of all concerned.