Factual error: There is no way the DMV will pass one twin based on the fact that his twin passed, even though they ended up taking his license. The mistake was giving it to him in the first place based on the fact his twin passed.
Factual error: Les' friends and sister are shown getting their real licenses (the actual cards, with photo) right away, the same day as their test. But in California, where they live, you don't get your license for six weeks or so - until then, you get a paper printout.
Factual error: Once the cop sees Mercedes' body in the trunk, Les and his friends would likely be charged with kidnapping, which is a felony. Les and his friends would then be charged as adults.
Suggested correction: Les and friends had no criminal intent to engage in kidnapping, which typically involves demanding a ransom, which they also were not seeking. As odd as it was, Mercedes was put in the trunk, at least in part, for her own safety/protection. Even a charge of false imprisonment or unlawful restraint would not be likely to result in any conviction (or adjudication in juvenile court) because Les and his friends lacked the necessary mens rea or guilty mind. They might be "in need of supervision."
Factual error: When Les is pulled over by the cop, he has Les open the trunk to reveal Mercedes in there passed out drunk. Les told the cop she was his date. The cops then get a call to report to the scene of the riots. The cop told Les he got off lucky. No cop will spot a body in the trunk of the car and let the driver off scott free. Even if the person in the trunk appeared drunk, Les would have been put in handcuffs and taken to the station until it was all cleared up. Even if they were called to handle the riots, the cops would have told dispatch what was going on and taken care of the Les problem instead.