Which of the following can lead to an automatic revocation of inspection mechanic status?

Being under the influence of alcohol during inspection hours is a serious violation that can lead to an automatic revocation of an inspection mechanic's status. In the context of vehicle inspections, the integrity and focus of the inspector are paramount. Inspectors are responsible for ensuring that vehicles meet safety and emissions standards, and being under the influence would impair their ability to perform these duties effectively and safely.

This type of behavior undermines the trust placed in inspection mechanics by the public and regulatory bodies, and it poses risks not only to the inspector but also to the safety of others on the road. As a result, regulatory agencies enforce strict policies regarding substance use during inspection hours, making this a critical factor in maintaining an inspector's certification.

In contrast, failing the written exam twice, having less than 12 months of experience, or not having a valid driver's license, while significant issues, may not necessarily lead to an automatic revocation of status. These situations could potentially result in other consequences, such as needing further training or time to gain experience, but they do not carry the immediate, severe implications associated with being under the influence during inspection hours.