You could take a college course before applying for work as a trainee with a garage.
Relevant courses include:
- Level 2 Diploma in Light Vehicle Maintenance and Repair
- Level 3 Diploma in Vehicle Technology
You'll usually need:
- 2 or more GCSEs at grades 9 to 3 (A* to D) for a level 2 course
- 4 or 5 GCSEs at grades 9 to 4 (A* to C) for a level 3 course