Lead Diesel Mechanic
Posted Sep 22, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about a time you trained a less experienced mechanic. What did you teach them?
What they are checking: Whether they help others improve, which is a big part of being a lead.
Tell me about the most complex engine or transmission job you've done.
What they are checking: Whether their hands-on experience matches the level expected of a lead technician.
How many ASE School Bus certifications do you hold, and how did you prepare for them?
What they are checking: Whether they have invested in their skills and can guide others toward certification.
What would you do
As lead in the Danville shop, how would you assign work to the other technicians on a busy morning?
What they are checking: Whether they can organize the shop so safety-critical repairs and route needs are handled first.
A tech tells you a bus is ready, but you check and find the brakes weren't adjusted. How do you handle it?
What they are checking: Whether they hold others to safety standards while coaching rather than just redoing the work.
Dispatch needs a bus right away but it isn't safe yet. How do you explain that to them?
What they are checking: Whether they communicate firmly and clearly to protect safety while working with operations.
About the work
Walk me through how you'd diagnose an intermittent electrical fault that other techs couldn't find.
What they are checking: Whether they have the deep diagnostic skill a lead tech needs for the hardest problems.
How do you inspect a school bus to make sure it'll pass a state safety inspection?
What they are checking: Whether they know state inspection standards and prepare buses to meet them.
How do you decide whether a part should be repaired or replaced?
What they are checking: Whether they think about cost, safety, and downtime when making repair decisions.
How do you keep the shop clean, organized, and safe for everyone?
What they are checking: Whether they take responsibility for shop safety standards as a lead.
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As published by First Student.