What is the difference between getting a paint job at a 4S shop and an external auto shop?

[LaElla]

The differences between getting a paint job at a 4S shop and an external auto shop are as follows: Quality varies: The paint quality at a 4S shop is relatively more reliable. Vehicles undergoing paint jobs at 4S shops must pass mutual quality inspections between various processes and a final inspection by quality control personnel before delivery. Manufacturers implement a comprehensive service supervision system to protect customer rights. In contrast, some external paint and beauty shops may lack a sound supervision and service system, potentially leading to difficulties in post-service claims. Color matching differs: 4S shops use original factory paint and read the vehicle's paint color code via the chassis number, ensuring more accurate color matching and reducing the likelihood of color discrepancies. Technically and procedurally, 4S shops perform more meticulous pre-paint preparations, applying a primer coat before the color coat to enhance paint durability and substrate protection. External paint and beauty shops may skip the primer layer or use cheaper substitutes.