Continuity mistake: When Dom slams his black Buick Grand National into the side of the Petroleum tanker to get the coupling to break, the entire side of the car is stoved in, and the rear axle is seriously bent as evidenced by the angle of the back wheel. All subsequent shots, however, show the wheel intact and the damage to the side as slight denting.
Continuity mistake: The tractor trailer rams the rear of the Buick twice. Just before the second impact, we can see the rear bumper of the Buick is hanging well below its normal location and the sides of the car show crumpled damage. Moments later, the car spins around alongside the trailer and the rear of the car is undamaged.
Continuity mistake: Moments before Letty leaps off the trailer onto the hood of the Buick, a quick shot (just as Dom begins to say "You gotta jump!") shows the hood is already damaged from a previous attempt of this same stunt, despite all the preceding shots showing no such damage.
Continuity mistake: When Dom steers into the path of the tractor-trailer to slow it down, the actual swerving of the Buick occurs immediately in front of the tractor, just a few feet ahead of it. As the Buick stops wiggling in the next shot, we can see the tractor is far behind the Buick instantly.