Factual error: When Iron Man catches the Audi SUV, the front wings/fenders don't bend when he catches it, the car weighs close to 2 tons, some damage should occur to them as they are made of such thin metal.
Factual error: At one point during the final battle, Betty puts her hand on the minigun. Having been recently fired for long periods, that thing would be scalding hot and would badly burn her hand.