X17 XCLUSIVE - Robert Pattinson Hits & Runs, Fights With Photographer

This is a WILD story ... Robert Pattinson left a house party in Malibu last night around 8 pm PT (with guitar in hand) and not only backed into the car of a fellow party-er but then pulled forward and hit ANOTHER car and then ... DROVE OFF!

Pattinson's super cool vintage ride suffered minimal damage and the other cars both had dents and scrapes but that didn't bother Rob one bit -- he left the scene without leaving a note on either car or telling anyone what he'd done.

RPatz headed south down PCH and after driving for about 20 minutes, he stopped and yelled at the photographers to leave him alone. He then went OFF on one of our guys (VIDEO COMING SOON!).

Rob gave up, got back in his car and drove off. A few miles later, when he saw police on the side of the road, Rob pulled over and spoke to the cops and asked them for help with our photographers who were behind him and they said there was nothing they could do. Meanwhile, fans gathered and started taking pix too - it's not just us, Rob; sorry!

Pattinson continued and hit up Soho House to finish off the night.

We have to say, we've not seen this side of the Twilight vamp before. Pattinson was outta control and upset. His quite, sensitive side went out the window and we discovered Jekyl!