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 2011 ASE test series). This list is updated twice a year, in January and July.

Automobile Technicians 257,676
Automobile Service Consultants 16,472
Advanced Engine Performance Specialists 44,372
Collision Repair/Refinish Technicians 25,294
Collision Damage Estimators 9,262
Medium/Heavy Truck Technicians 42,457
Truck Equipment Installation & Repair Technicians 3,054
Engine Machinists 2,318
Compressed Natural Gas Technicians 2,105
Transit Bus Technicians 2,751
School Bus Technicians 5,391
Parts Specialists 50,046
Net Total Service Professionals 360,336
Note:  “Net Total” means individuals with multiple certifications are counted only once.  
 
Master Automobile Technicians 87,580
Master Collision Repair/Refinish Technicians 5,434
Master Medium/Heavy Truck Technicians 13,514
Master Medium/Heavy Vehicle Technicians 325
Master Truck Equipment Technicians 1,305
Master Engine Machinists 1,338
Master Transit Bus Technicians 486
Master School Bus Technicians 1,333
 
Automobile Series  
A1: Engine Repair 156,900
A2: Automatic Transmission Transaxle 109,938
A3: Manual Drive Train and Axles 124,105
A4: Suspension and Steering 181,319
A5: Brakes 199,213
A6: Electrical/Electronic Systems 159,651
A7: Heating and Air Conditioning 146,961
A8: Engine Performance 144,875
A9: Light Vehicle Diesel Engines 7,050
 
Medium/Heavy Truck Series  
T1: Gasoline Engines 12,641
T2: Diesel Engines 26,341
T3: Drive Train 20,844
T4: Brakes 28,388
T5: Suspension and Steering 21,790
T6: Electrical/Electronic Systems 24,268
T7: Heating, Ventilation & A/C 20,147
T8: Preventive Maintenance Inspection 19,638
 
Truck Equipment Installation and Repair Series  
E1: Truck Equipment Installation and Repair Specialist 2,086
E2: Electrical/Electronic S stems Installation and Repair 2,150
E3: Auxilary Power Systems Installation and Repair 1,937
 
Collision Repair and Refinish Series  
B2: Painting and Refinishing 14,760
B3: Non-Structural Analysis and Damage Repair 13,901
B4: Structural Analysis and Damage Repair 11,522
B5: Mechanical and Electrical Components 12,027
 
Damage Analysis and Estimating  
B6: Damage Analysis and Estimating 9,262
 
Alternate Fuels Series  
F1: Compressed Natural Gas Vehicle 2,105
 
Advanced Level Series  
L1: Automobile Advanced Engine Performance Specialist 42,221
L2: Medium/Heavy Vehicle Electronic Diesel Engine Diagnosis Specialist 3,763
 
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 340
H2: Diesel Engines 1,389
H3: Drive Train 1,045
H4: Brakes 1,809
H5: Suspension & Steering 1,212
H6: Electrical/Electronic Systems 1,259
H7: Heating, Ventilation & A/C 1,235
H8: Preventive Maintenance and Inspection 977
 
School Bus Series  
S1: Body Systems and Special Equipment 2,916
S2: Diesel Engines 2,864
S3: Drive Train 2,822
S4: Brakes 3,909
S5: Suspension and Steering 3,217
S6: Electrical/Electronic Systems 3,119
S7: Air Conditioning System and Controls 1,762
 
Service Consultant Series  
C1: Automobile Service Consultant 16,472
 
Specialty Tests  
X1: Exhaust Systems 7,722
 
Parts Specialist Series  
P1: Medium/Heavy Truck Parts Specialist 1,603
P2: Automobile Parts Specialist 48,618
P3: Medium/Heavy Truck Aftermarket Parts Specialist - Brakes 676
P4: General Motors Parts Consultant 892
P9: Medium/Heavy Truck Aftermarket Parts Specialist - Suspension and Steering 525