Tesla Motors Mechanical Engineer average salary is $81,837, median salary is $80,000 with a salary range from $65,000 to $120,000.Tesla Motors Mechanical Engineer salaries are collected from government agencies and companies. Each salary is associated with a real job position.esla Motors Mechanical Engineer average salary is $81,837, median salary is $80,000 with a salary range from $65,000 to $120,000.