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 Fall 2012 ASE test administration). This list is updated twice a year, in January and July.

Automobile Technicians 274,182
Automobile Service Consultants 19,125
Advanced Engine Performance Specialists 45,442
Collision Repair/Refinish Technicians 27,401
Collision Damage Estimators 10,049
Medium/Heavy Truck Technicians 45,778
Truck Equipment Installation & Repair Technicians 3,333
Engine Machinists 2,318
Compressed Natural Gas Technicians 2,352
Transit Bus Technicians 3,149
School Bus Technicians 5,743
Parts Specialists 55,428
Net Total Service Professionals 339,260
Note:  “Net Total” means individuals with multiple certifications are counted only once.  
 
Master Automobile Technicians 97,095
Master Collision Repair/Refinish Technicians 5,942
Master Medium/Heavy Truck Technicians 15,218
Master Medium/Heavy Vehicle Technicians 221
Master Truck Equipment Technicians 1,470
Master Engine Machinists 1,338
Master Transit Bus Technicians 657
Master School Bus Technicians 1,958
 
Automobile Series  
A1: Engine Repair 168,124
A2: Automatic Transmission Transaxle 117,573
A3: Manual Drive Train and Axles 132,765
A4: Suspension and Steering 195,546
A5: Brakes 215,221
A6: Electrical/Electronic Systems 171,471
A7: Heating and Air Conditioning 157,790
A8: Engine Performance 154,924
A9: Light Vehicle Diesel Engines 12,109
 
Medium/Heavy Truck Series  
T1: Gasoline Engines 13,620
T2: Diesel Engines 28,492
T3: Drive Train 22,489
T4: Brakes 30,859
T5: Suspension and Steering 23,525
T6: Electrical/Electronic Systems 26,245
T7: Heating, Ventilation & A/C 21,852
T8: Preventive Maintenance Inspection 21,693
 
Truck Equipment Installation and Repair Series  
E1: Truck Equipment Installation and Repair Specialist 2,325
E2: Electrical/Electronic S stems Installation and Repair 2,356
E3: Auxilary Power Systems Installation and Repair 2,121
 
Collision Repair and Refinish Series  
B2: Painting and Refinishing 15,975
B3: Non-Structural Analysis and Damage Repair 15,026
B4: Structural Analysis and Damage Repair 12,439
B5: Mechanical and Electrical Components 13,042
 
Damage Analysis and Estimating  
B6: Damage Analysis and Estimating 10,049
 
Alternate Fuels Series  
F1: Compressed Natural Gas Vehicle 2,352
 
Advanced Level Series  
L1: Automobile Advanced Engine Performance Specialist 45,442
L2: Medium/Heavy Vehicle Electronic Diesel Engine Diagnosis Specialist 4,099
 
Engine Machinist Series  
M1: Cylinder Head Specialist 1,873
M2: Cylinder Block Specialist 1,665
M3: Assembly Specialist 1,816
 
Transit Bus Series  
H1: Compressed Natural Gas (CNG) Engines 431
H2: Diesel Engines 1,574
H3: Drive Train 1,232
H4: Brakes 2,090
H5: Suspension & Steering 1,423
H6: Electrical/Electronic Systems 1,477
H7: Heating, Ventilation & A/C 1,390
H8: Preventive Maintenance and Inspection 1,219
 
School Bus Series  
S1: Body Systems and Special Equipment 3,128
S2: Diesel Engines 3,085
S3: Drive Train 3,002
S4: Brakes 4,202
S5: Suspension and Steering 3,454
S6: Electrical/Electronic Systems 3,344
S7: Air Conditioning System and Controls 1,913
 
Service Consultant Series  
C1: Automobile Service Consultant 19,125
 
Specialty Tests  
X1: Exhaust Systems 8,607
 
Parts Specialist Series  
P1: Medium/Heavy Truck Parts Specialist 1,871
P2: Automobile Parts Specialist 53,844
P3: Medium/Heavy Truck Aftermarket Parts Specialist - Brakes 676
P4: General Motors Parts Consultant 957
P9: Medium/Heavy Truck Aftermarket Parts Specialist - Suspension and Steering 525