I was absolutely in the target audience for this film in 1986, and watched it in the cinema with my little brother tagging along. I remember being irked by the so obviously fake and fantasy robot, but magically sentient robots were pretty de rigueur for late-80s teen flix, so it wasn't out of context for the era.
Anything my brother and I really liked, we usually saw at least one more time -- movies that we were "allowed" to see being a tiny minority of movies released -- but this particular film we only saw only once, strongly suggesting its overall "it was OK"-ness.