Continuity mistake: After the plane is docked Stallone and Statham enter the customs agency. Statham is wearing a Canon 5D MarkII camera on his neck with a small lens, he even shows it to the customs agent. After leaving the customs they walk across a square. The camera now has a big zoom lens attached to it. Statham is not wearing a lens bag. Where did he get that lense from? Also strange is that the lens is set in manual focus instead of automatic. Yet the picture stays focused even zooming in. This is not possible without looking at the screen. Plus the camera is turned off in the close up shot, with the image on the LCD composited in.
Continuity mistake: In the scene where Lee pays a visit to Paul on the basketball court, he and Lacy are both wearing helmets. Lacy gets off the bike and after a little taunting, Lee drives forward. As he rides away from Lacy his helmet is on, there is a cut scene, and suddenly his helmet is off and Lacy is walking away with it.