Floor pan corroded throughout

Depending on where the rust is and how far it has spread into other areas you quite likely would spend more to repair it than you could buy a replacement vehicle.
However, about the only place you would find a part like that would be in a salvage yard or by having a similar part cut up to fit.
You would be much better off to visit a few auto body shops near you to have them inspect the damage and see if they can repair it. I can say that price wise in my area to replace an entire floor could easily cost $2,000.00 for the parts, labor and painting.

Hi and thanks for using 2CarPros.com.

This issue is going to require a body repair shop. On some vehicles, replacement floor pans are available or a body shop will have to fabricate the parts and weld them in place. As far as a price, It is impossible for me to estimate. It will all be based on labor because the material to make the repair should not be too expensive. Keep in mind, based on where the rust is actually located will determine if it is even repairable. A unibody vehicle depends on the floor and rocker panels to maintain integrity.

If you have other questions, I will do my best to help.

Let me know.

Joe

It is the full floor plan. It says monitor and repair so not sure how bad it actually is. The car passed its MOT last year with nothing reported on its MOT. Surely this could have not happened in just a year?

In that case a shop could likely cut out the bad areas and replace just the sections. Replacing the entire pan probably is not needed. Without seeing it in person it would be difficult to say exactly but section repairs are much easier as long as it is not some area where the suspension or other hard parts attach. It is even possible that it is surface rust that has shed the paint and could be repaired by scrubbing it off with sandpaper and coating it with something like a rust stopping paint. Perhaps have a couple shops look it over and see what they say.