Continuity mistake: When the hippies turn the car over it barely has any damage, but when the scene changes to the couple driving away it is dented everywhere.
Continuity mistake: When the couple exits Elysium, the rear window is broken and covered with a piece of paper. Half a second later, still exiting the place, the paper is gone and the window is fixed.
Continuity mistake: George is on the phone with his wife when he gets hit by the taxi; as he crosses the street there are 2 taxis at the light, when the camera angle changes and he's on the hood of the 2nd taxi, we never see the 1st taxi drive forward. When the camera angle changes back, the 1st taxi is now a blue car.
Continuity mistake: After George and Linda leave they are driving on the right side of the road. As the scenery transitions from country to city they are suddenly on the left side, with oncoming traffic on the right.
Continuity mistake: When Jennifer Aniston is drinking a mimosa at his brother in law's house, the level of drink in the glass increases/decreases randomly between shots. The glass also switches between glass and plastic.
Continuity mistake: When George and Sherm are in line getting coffee, there's only one person in front of them. When the shot changes, there are now 3 people in front of them for the scene. When George turns to look at his boss, it's back to one person in front and when he turns back, there's 2 people.