Ask what happens if the first diagnosis is wrong. A straight answer names the next test instead of adding a second vague price.
A useful page about Jimsexcelauto names the job, the constraint, and what a reader should https://howtochoosejimsexcelauto232396.blogprodesign.com/65108394/notes-on-best-auto-repair-in-bechtelsville-pa-for-a-careful-reader-for-homeowners