Always ask about the certification and the of a mechanic before letting them fix your car.
If something goes wrong, the mechanic's will cover damages and usually provides you with a car you can drive until yours is fixed. https://www.webwiki.it/auto-works.cc/%D9%87%D8%A7%D9%86%D9%83%D9%88%D9%83-%D9%87%D8%A7%D9%86%D9%83%D9%88%D9%83-245-45-19-245-45-19-1