Internal Sill Corrosion
SeriousBodywork & RustFoam filler inside the sills can trap moisture, causing them to rust from the inside out. This is a serious structural issue in the UK.
Est. Repair Cost: £500–£1,200
Warning Signs:
Bubbling paint on the side sills, Soft spots in the metal when pressed
What to Inspect:
- Examine the sills thoroughly, especially near the rear wheel arches
- Check MOT history for any mentions of corrosion near structural points
Verified by IsItAGoodCar Research Team