Who is responsible for treating Level 4 Rust?

The responsibility for treating Level 4 Rust falls to body shops due to their expertise and specialized equipment necessary for such extensive repairs. Level 4 Rust indicates severe corrosion that can compromise the structural integrity of a vehicle. Body shops are equipped to handle the complexities involved in dealing with this extent of rust damage, including assessing the area, removing affected materials, treating the underlying issues, and performing necessary bodywork to restore the vehicle to a safe condition.

While do-it-yourselfers, mobile repair units, and mechanics can address various automotive issues, they may not have the specialized training or resources to effectively manage and repair extensive rust damage that goes beyond simple surface treatment. Body shops are specifically designed to offer comprehensive solutions for severe structural repairs, unlike the other options, which may not possess the same level of capability in treating advanced rust problems.