Our small (6 years) likes to play with the set of Marklin. At the price it seems high to be nothing comparable. Even if he manages the placement of the train again with difficulty, I would recommend starting at 4 years. Opinion of Papa must grab the ICE back on track times often. ;-)
For which there are also some videos to the set on a large video portal with Y ..... There you can the train also have a first view in action.