The most obvious signs in the UAE are when the scratch feels rough to the touch like sandpaper, shows a different color (often a light gray or grayish-white layer on GCC-spec vehicles, not just black or white), and you might see tiny rust spots forming within a few days, especially in coastal humid areas. I've seen this countless times during summer detailing when dust and fine sand reveal the primer's true color. A simple fingernail test works: if your nail catches in the groove, it's deep. For example, a scratch down to the primer on a Toyota Hilux door might cost between 600 to 900 AED for a proper panel repair at reliable shops in Al Quoz, depending on its length, not including potential blending for metallic colors. Leaving it untreated, particularly on the hood or roof exposed to relentless sun and humidity, will lead to noticeable rust and corrosion within months, compromising the vehicle's body integrity and resale value. The MOI UAE's vehicle inspection guidelines for pre-registration checks emphasize the integrity of the vehicle's body against rust and major damage. Furthermore, for overall vehicle safety and maintenance standards that indirectly affect long-term body preservation, RTA Dubai mandates regular vehicle testing. Prompt repair is essential to prevent moisture from reaching the bare metal, which accelerates oxidation in our climate.
