My 4 year old loves it. I bought him a couple of Meccano vehicles for Christmas and he enjoys trying to build them. The age on the box states from 5 years and this is appropriate as his 10 year old brother helps him make the vehicle specified on the box. My 4 year old can use the screwdriver provided to make up his own type of vehicle as the parts can be used like lego - mix them up and they still go together xx
I have been building this set with my son, you get quite a few pieces in this set and the vehicle looks good when completed. It is sturdy when built, but they are not easy too put together and little one's may need a helping hand to complete these. This item is a good price and my son has had fun putting this together.