The phrase “garage secret” sounds dramatic, but the truth behind it hits your wallet quietly. Most people hand over their keys and trust the process, never knowing what happens out of sight. Shops itemize labor, parts, and fees, yet entire categories of charges stay buried under vague descriptions. These blind spots drain money, and they do it routinely. Understanding the garage secret builds leverage, reduces waste, and keeps repairs honest. That said, here are six charges that your mechanic probably tacks on but never explains.
