The official retention period for smog check and repair records is described as three years. Which option shows this duration?

• A. 1 year
• B. 2 years
• C. 3 years
• D. 4 years

Answer: (C)

Retention period for smog check and repair records means how long a shop must keep documentation of tests and any repairs. This creates a customer and regulator-friendly paper trail in case questions or audits arise. In California, the required duration is three years. That three-year window provides enough time for regulators to review past inspections or repairs if needed, without imposing an unnecessary storage burden on the shop. Shorter periods, like one or two years, might not cover all potential inquiries, while a longer period, such as four years, isn’t required. So the duration shown is three years.