The average mechanic salary at Atwater was $88,993 , which is 14 percent lower than the average salary for this job in California, but 59 percent higher than the national average for this job . Mechanic salaries at Atwater typically range from $80,445 to $97,540 (25th to 75th percentile). The highest reported mechanic salary was $97,540. There are 2 employees at Atwater with the job title mechanic.