That's funny you should say that because that was the exact reason I bought the car...Because I have had SO much trouble finding seats that would support my legs under my thighs. All the cars I sat in including the Mercedes has such short seats..Maybe it's the padding they put in the seats of the Q3. The seats on the Q5 are supposedly the same size, at least that's what the salesman told me. I thought about gettting the sports seats w/ knee extension but after driving a Q5 w/ knee extension which is a great idea but there's not enough padding on the extension to be comfortable when you're driving. Guess it's personal preference.