Leaving aside the car stuff that has already been mentioned, it’s mostly gunplay that annoys me in films.
Things like full auto being used by professional soldiers when shooting at distance, or basically anything other than close combat. 13 Hours at least did that bit right with the GRS guys using mostly single shot.
Magazines never running out, or having endless spares… I mean, WTF? Most people carry between four and six, plus one on, so that’s about 200 rounds. Yet they seem to be able to go full auto all day without running out or having to stop, ask their mates for spare 4BIT and then spend 20 minutes sitting on a daysack reloading mags.
Oh, and dumping mags. Grrrrrr. You don’t do that if you want to actually use them again. Put them back in a pouch or in a dump bag FFS.