My driving lessons were on a run-of-the-mill VW Golf, which I am having the impression continues to be the favourite car for driving schools here in Germany. However, I keep noticing an increase in SUVs specifically being used for driver training, with estates, in my impression, also appearing with increasing frequency. I am still not completely sure what to make of this, but I do recognise how it might be sensible to be training drivers on large cars from the beginning, as I believe you could argue that this might instil them with the proper respect for handling high-powered and (relatively) heavy rides.