Take a closer look at ASE-certified professionals and their specialties.

Across the country, there are hundreds of thousands of auto professionals who are ASE certified in dozens of specialty areas, including many professionals who are certified in multiple areas. The numbers of professionals currently certified by ASE are shown below (with information accurate through the Spring 2016 ASE test administration). This list is updated once a year in July.

Please note in addition, there are 46,372 students who hold current ASE Student certification.

Automobile Technicians 213,094
Service Consultants 17,587
Maintenance/Light Repair Technicians 14,692
Advanced Engine Performance Specialists 33,556
Collision Repair/Refinish Technicians 18,160
Collision Damage Estimators 6,293
Medium/Heavy Truck Technicians 36,134
Truck Equipment Installation & Repair Technicians 2,601
Compressed Natural Gas Technicians 1,853
Transit Bus Technicians 3,462
School Bus Technicians 4,405
Parts Specialists 38,734
Net Total Service Professionals 296,821
Note:  “Net Total” means individuals with multiple certifications are counted only once.  
Master Automobile Technicians 74,304
Master Collision Repair/Refinish Technicians 4,011
Master Medium/Heavy Truck Technicians 11,697
Master Medium/Heavy Vehicle Technicians 195
Master Truck Equipment Technicians 1,143
Master Transit Bus Technicians 823
Master School Bus Technicians 1,444
Automobile Series  
A1: Engine Repair 115,657
A2: Automatic Transmission Transaxle 84,425
A3: Manual Drive Train and Axles 93,037
A4: Suspension and Steering 136,410
A5: Brakes 149,118
A6: Electrical/Electronic Systems 119,676
A7: Heating and Air Conditioning 110,446
A8: Engine Performance 108,987
A9: Light Vehicle Diesel Engines 16,464
Maintenance/Light Repair Series  
G1: Auto Maintenance and Light Repair 14,692
Medium/Heavy Truck Series  
T1: Gasoline Engines 9,332
T2: Diesel Engines 19,731
T3: Drive Train 15,631
T4: Brakes 21,476
T5: Suspension and Steering 16,690
T6: Electrical/Electronic Systems 17,888
T7: Heating, Ventilation & A/C 15,856
T8: Preventive Maintenance Inspection 16,409
Truck Equipment Installation and Repair Series  
E1: Truck Equipment Installation and Repair Specialist 1,674
E2: Electrical/Electronic S stems Installation and Repair 1,673
E3: Auxilary Power Systems Installation and Repair 1,476
Collision Repair and Refinish Series  
B2: Painting and Refinishing 8,994
B3: Non-Structural Analysis and Damage Repair 8,115
B4: Structural Analysis and Damage Repair 6,988
B5: Mechanical and Electrical Components 8,675
Damage Analysis and Estimating  
B6: Damage Analysis and Estimating 6,293
Alternate Fuels Series  
F1: Compressed Natural Gas Vehicle 1,853
Advanced Level Series  
L1: Automobile Advanced Engine Performance Specialist 33,556
L2: Medium/Heavy Vehicle Electronic Diesel Engine Diagnosis Specialist 3,360
L3: Light Duty Hybrid/Electric Vehicle Specialist 1,457
Transit Bus Series  
H1: Compressed Natural Gas (CNG) Engines 614
H2: Diesel Engines 1,480
H3: Drive Train 1,411
H4: Brakes 2,060
H5: Suspension & Steering 1,587
H6: Electrical/Electronic Systems 1,447
H7: Heating, Ventilation & A/C 1,435
H8: Preventive Maintenance and Inspection 1,579
School Bus Series  
S1: Body Systems and Special Equipment 2,156
S2: Diesel Engines 2,010
S3: Drive Train 2,066
S4: Brakes 2,774
S5: Suspension and Steering 2,204
S6: Electrical/Electronic Systems 2,144
S7: Air Conditioning System and Controls 1,252
Service Consultant Series  
C1: Automobile Service Consultant 17,587
Specialty Tests  
X1: Exhaust Systems 6,237
Parts Specialist Series  
P1: Medium/Heavy Truck Parts Specialist 1,680
P2: Automobile Parts Specialist 31,845
P4: General Motors Parts Consultant 775