Is it serious if a sedan scrapes its undercarriage?

[MacLila]

Whether scraping a sedan's undercarriage causes damage requires case-by-case analysis: 1. If the suspension system isn't damaged or deformed, and there's no oil leakage, then there's no impact; 2. If the control arm suffers severe impact deformation, the vehicle's wheel alignment parameters will be disrupted, causing steering deviation or even severe friction noises; 3. If the undercarriage reinforcement components are scraped, exposing bare metal by scratching off protective coatings, immediate treatment is needed to prevent rust. Methods to prevent undercarriage scraping include: 1. Installing an engine guard plate, which can reduce engine damage from scraping but may affect engine cooling and could hinder engine drop-down during collisions, creating safety risks; 2. Applying undercarriage armor coating.