Common Sense Media is out of their mind. There's too much language for 8-year-olds anyway. It's NOT "occasional", as Common Sense Media puts it. This includes PG-13 insults like "a**hole", "son-of-a-b****", "b*st*rds", "h*ly sh*t", and obvious misuses of Jesus' name. The last ones would obviously offend people who believe in them (which I DO, so watch the language, Universal.) Oh, and milder language which could be passed as PG ("a**", "h*ll", "d*mn".)
IF THAT isn't enough, there's attempted unwanted sex, because a school bully grabs a woman, grabs her roughly and forces her into a car, by making inappropriate sexual advances like "I know you want it" and then it cutting away. And what do they mean "she's never really in danger?" She is! Threats of sexual violence? Hello?! DO use your Common Sense, Common Sense Media.
I'm pretty sure you think Common Sense is out of their mind now. I'm pretty sure I wouldn't allow bloody patches shot out of a guy's chest by terrorists and Marty calling them "b*st*rds" for an 8-year-old. Save it till' they're older. One guy's also electrocuted by a storm.
NOTE: The TV-appropriate version MIGHT remove language, but this is the DVD version, which I've watched. Definitely deserves a PG-13.
Characters are shoved, pushed and punched by bullies, including a car/hoverboard chase, which ends in a prolonged "sh*t!" Very funny scene, but may offend.
More sexual content contains a voyeuristic boy looking through binoculars at a girl undressing in her room, maybe some cleavage at a party (but then again, it's natural), going away with your girlfriend for two days and lying to parents, as one user reviewer said?) and a sexual tension between time travel and the main character having to not fall into dating his mother (!) She looks young, but nevertheless, ew.
This isn't a "kid movie", as some like to describe it. More a, "teen movie".
The language is FREEEEEEQUENT, not occasional. I bet Common Sense Media were playing Halo or Mario Kart or something rather than watching this movie. "Great Scott!" is also said by the Doc.
Adult themes include molestation, at the very least, and perhaps teenage dating, though that's not as bad as the molestation theme. Any other sexual content? One reviewer barely noticed a XXX-sign. One reviewer states that every 1.53 mins. there's a swear-word, not including name-calling.
Okay, back to the movie (or the future - only kidding). I thought it was quite good, but WAAAAAY inappropriate for an 8-year old. Iffy for 12. But overall a good movie... CAUTION about language, violence and adult theme especially. Thankyou for reading.