Generally speaking, yes you can! However, there are some rules to be aware of: Maximum dimensions of both: width 700 mm, depth 1,300 mm, and height 1,400 mm (Royal Decree 1544/2007 and R.D. 537/2019) If you are traveling on a normal seat (not an H-seat) your wheelchair and scooter must be foldable for convenient transport. These measurements apply to both train providers, Renfe and OUIGO.