QUOTE (THX @ Sep 23 2009, 12:03 AM)

I got the official Prius mats thrown in as part of the deal but they did not have the hooks attached as shown in the owner's manual page 379 (new 2009 Gen3). Is there any way to tell if they have given me the Gen2 mats instead as they do not match the holes in the floor carpet? The picture in owner's manual show that the hooks are there to link the mis-alignment but then picture also shows the driver side mat which looks different to the one I have been given.
The mat on the drivers side does not have the tongue that is shown in the manual going up under the accelerator pedal. Apart from a cut-out for the foot-rest, the mat is square across the top.
The hooks have a peg on the underside that is a loose-ish fit in the hole in the carpet and which allows the hook to swivel horizontally, so there is a lot of tolerance on the side-to-side position of the hook.

The mat has a pair of holes with sturdy plastics ferrules that fit over the hooks.

When the mat is in place, the hooks protrude a little through the holes, but they are under the front edge of the seat so they don't get in the way. There is adequate side-to-side movement to allow the mat to fit neatly, but it cannot be shuffled forward under the accelerator pedal.

The hooks are essential to fixing the mat and stopping it from moving about. If they were not supplied, you need to go back. It's a good arrangement. I had an identical set-up in my last car and in three years it never moved at all.