Hello
Does my car mis something under the trunk floor panel? I cant put any weigh on it or it will sag easily 5cm until those gray foam rubber blocks hits to the spare wheel.

 

If you have a space saver in there, the floor panel is supposed to be in its lower position (a 2 step floor as the result, Jaguar logic ...).
If you have a normal spare, the floor is supposed to be in its higher position, creating one flat floor.
Anyway, in both cases, the bolt holding the spare down (longer or shorter depending above) should have a flat piece, supporting the floor in its center.

 

Thanks. This explains a lot. I do have space saver. If I lower the panel to the lower position. It is not straight. There is no lower level notches at the bumper end of the slot so panel tilts to forward. Have to fiqure something out before this saturday. About 40Kg does not sound good with panels that has poor support.

 

I just had a friend's car here till yesterday, it should look like this for the space saver.
The front should rest on the lower notches / recess, the bumper side should rest on the floor / plastic cover.
But I know from previous discussions that some cars came with rather strange alternatives / missing parts / whatever ... you are not the first one who seems to be confused.

 

I was wrong. I can have it flat at the lower position. But it is not sturdy enough. We will see..

 

5cm thick car lift pads did the trick nicely. Placed two of those top of the spare wheel so that the floor panel at the lower position touches the pads and the screw at the same time.