ASE T8 Preventive Maintenance practice test
The T8 test covers preventive maintenance inspection — the systematic PM service and the federal inspection standards behind it: brake stroke limits, tread depths, leak classification, and what puts a truck out of service. Required for Master Truck status.
During a PM, an oil seep is found at a gasket — enough to wet the surface but not form a drop. Fleet practice classifies leaks (seep/drip/run or Class 1/2/3) because:
How the T8 test works
50 scored questions
+ ~10 unscored research questions
75 minutes
computer-based, at a test center
$62 per test
plus one $34 registration fee per order
Valid 5 years
then a shorter recertification test
ASE does not publish a fixed passing percentage — scores are scaled. Around 65–70% correct is the commonly cited range; aim above 80% in practice so you walk in with margin. The certificate is issued once ASE verifies your required work experience.
What the T8 test covers
The official task list for T8 Preventive Maintenance Inspection (Medium-Heavy Truck) breaks down into these content areas — the practice bank above draws from all of them:
- Engine systems PM — fluids, filters, leaks, belts, cooling system checks
- Cab, chassis, and frame inspection
- Brake system inspection — pushrod stroke, linings, air system checks
- Tires, wheels, and mud flaps — FMCSA tread depth minimums
- Electrical, lighting, and conspicuity checks
- Federal inspection standards and record-keeping basics
Frequently asked
- How many questions are on the ASE T8 test?
- The T8 test has 50 scored questions plus about 10 unscored research questions, with a 75-minute time limit.
- What tread depth minimums should I know?
- The federal minimums: 4/32 inch on steer-axle tires and 2/32 inch on all other positions, measured in a major tread groove.
- Is T8 a good first T-series test?
- Many technicians start with T8 because PM work is the entry point of most shop careers, and its content reviews every other system at inspection depth.
Other ASE practice tests
Driving trucks, not just wrenching on them?
HaulSchool has free CDL practice tests — general knowledge, air brakes, and every endorsement — plus plain-English DOT physical guides.
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