When Simon and Peter drive the red car in the rain (to the vineyard), the windshield wipers start and stop during the conversation.
At the vineyard, when the old woman shoots the revolver, she fires seven shots without reloading (when the gun holds only six rounds).
During the getaway from the bank, while the security team is chasing them, Peter is driving a right hand drive car while Simon shoots out the left window. In the scene immediately after the security teams car flips over, we see Peter driving a left hand drive car while Simon is shooting out the right window.
When the company assassination car flips over, you can see the equipment used to flip the car.
In the scene when the bikers shoot at the floor beneath Thomas Jane, no bullet holes appear in the tile.
The company assassination car that flips over is clearly a completely different model to the one that is used in the chase (presumably budgeting for the film). After it flips, you can see the levers that lifted it, sticking out from the undercarriage.
When Roberts is driving the Ford Falcon, the wipers are on. In between swipes, you can see the water roll down the windshield. If they were traveling at highway speed, the water would have been blown upward.
Despite the fact that the Ford Mustang they drive later in the film is clearly has an automatic transmission, the driver is constantly pumping the brake (like a clutch) and shifting between 2nd and 3rd gears.
In the getaway from the bank, the learner car gets shot, and a bullet hole appears in the rear window. During the chase the poor lighting clearly shows the plastic sticker surround to the 'bullet hole'
During the chase scene with the bikers after john grabbed the case the scene shows the back of the car at an angle clearly showing the shadow of the rear camera.
Not long after john grabs the case back from the bikers during the chase scene camera switches to the front clearly showing the back of the crew truck that the cameraman is sitting on.