Practice tests for all 81 certifications

Every ASE, EVT and EPA 609 exam we cover — 13,972 questions in total, each with a written explanation. Pick your test to see free sample questions. Want the hands-on side? Shop skills walks through the tests behind the questions.

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ASE Automobile

A-Series · light vehicle · 1,088 questions

A1 Engine Repair 119 Qs A2 Automatic Transmission / Transaxle 121 Qs A3 Manual Drive Train & Axles 120 Qs A4 Suspension & Steering 120 Qs A5 Brakes 122 Qs A6 Electrical / Electronic Systems 122 Qs A7 Heating & Air Conditioning 121 Qs A8 Engine Performance 122 Qs A9 Light-Vehicle Diesel Engines 121 Qs

ASE Medium / Heavy Truck

T-Series + L2 · 1,248 questions

T1 Gasoline Engines 140 Qs T2 Diesel Engines 151 Qs T3 Drive Train 133 Qs T4 Brakes 139 Qs T5 Suspension & Steering 131 Qs T6 Electrical / Electronic Systems 146 Qs T7 HVAC 135 Qs T8 Preventive Maintenance Inspection (PMI) 136 Qs L2 Electronic Diesel Engine Diagnosis 137 Qs

EVT Fire Apparatus

F-Series · NFPA 1900 / 1910 · 2,913 questions

DO1 Driver/Operator Inspection 219 Qs F1 Maintenance, Inspection & Testing 327 Qs F2 Design & Performance Standards 424 Qs F3 Fire Pumps & Accessories 330 Qs F4 Fire Apparatus Electrical Systems 315 Qs F5 Aerial Fire Apparatus 315 Qs F6 Allison Automatic Transmissions 318 Qs F7 Foam Systems 109 Qs F8 Hydraulic Systems 276 Qs FA4 Advanced Electrical Systems 179 Qs GL Ground Ladder Testing 101 Qs

EVT Ambulance

E-Series · NFPA 1900 / KKK · 1,714 questions

E0 Maintenance, Inspection & Testing 314 Qs E1 Ambulance Design & Performance 400 Qs E2 Ambulance Electrical Systems 311 Qs E3 Ambulance HVAC 356 Qs E4 Cab, Chassis & Powertrain 333 Qs

EVT ARFF (Airport)

Aircraft Rescue & Fire Fighting · 340 questions

AR1 ARFF — Design & Performance (A-1) 150 Qs AR2 ARFF — Chassis & Components (A-2) 95 Qs AR3 ARFF — Extinguishing Agent Systems (A-3) 95 Qs

ASE Advanced & EV

L1 / L3 / L4 · ADAS & hybrid-EV · 647 questions

L1 Advanced Engine Performance 163 Qs L3 Light-Duty Hybrid / EV 157 Qs L4 ADAS (Driver Assistance) 165 Qs XEV High-Voltage EV Safety 162 Qs

EPA A/C Certification

Section 609 · MVAC refrigerant · 161 questions

E609 EPA MVAC A/C Refrigerant 161 Qs

ASE Transit Bus

H-Series · 1,353 questions

H1 Transit Bus — CNG Engines 173 Qs H2 Transit Bus — Diesel Engines 171 Qs H3 Transit Bus — Drive Train 169 Qs H4 Transit Bus — Brakes 172 Qs H5 Transit Bus — Suspension & Steering 170 Qs H6 Transit Bus — Electrical / Electronic 157 Qs H7 Transit Bus — HVAC 168 Qs H8 Transit Bus — PM Inspection 173 Qs

ASE School Bus

S-Series · 1,200 questions

S1 School Bus — Body & Special Equipment 171 Qs S2 School Bus — Diesel Engines 170 Qs S3 School Bus — Drive Train 175 Qs S4 School Bus — Brakes 170 Qs S5 School Bus — Suspension & Steering 170 Qs S6 School Bus — Electrical / Electronic 174 Qs S7 School Bus — HVAC 170 Qs

ASE Truck Equipment

Installer series — retired by ASE Dec 31, 2025 · 511 questions

TE1 Truck Equipment — Installation 171 Qs TE2 Truck Equipment — Electrical Install 172 Qs TE3 Truck Equipment — Auxiliary Power 168 Qs

ASE Alternate Fuels

CNG vehicles · 171 questions

AF1 Alternate Fuels — CNG 171 Qs

ASE Collision Repair & Refinish

B-Series · 803 questions

B2 Collision — Painting & Refinishing 157 Qs B3 Collision — Non-Structural Repair 166 Qs B4 Collision — Structural Repair 158 Qs B5 Collision — Mechanical & Electrical 159 Qs B6 Collision — Damage Analysis & Estimating 163 Qs

ASE Maintenance & Light Repair

G1 · entry level · 160 questions

G1 Auto Maintenance & Light Repair 160 Qs

Cummins

OEM engine certification · 833 questions

CX15 X15 / ISX15 Heavy-Duty 120 Qs CX12 ISX12 / X12 120 Qs CMR B6.7 & L9 Mid-Range 119 Qs CFUEL XPI Common-Rail Fuel 115 Qs CATS Aftertreatment & Emissions 119 Qs CELEC Electrical & Sensors 120 Qs CDIAG INSITE & Controls 120 Qs

Detroit Diesel

OEM engine certification · 830 questions

DD15 DD13 / DD15 Heavy-Duty 119 Qs DD16 DD16 Heavy-Duty 120 Qs DFUEL Amplified Common-Rail Fuel 119 Qs DATS Aftertreatment / One-Box 118 Qs DDEC DDEC Controls & DiagnosticLink 118 Qs DAXLE Detroit Axles 120 Qs DT12 DT12 Automated Manual 116 Qs

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