ASE T3 Drive Train practice test
The T3 test covers the truck driveline: heavy-duty clutches, non-synchronized manual transmissions, automated manuals, driveshafts, and single or tandem drive axles with power dividers. Required for Master Truck status.
A two-piece driveshaft truck develops a droning vibration and a visible wobble at the midship area. Which component is the prime suspect?
How the T3 test works
40 scored questions
+ ~10 unscored research questions
60 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 one universal passing percentage; the passing standard is set by test. TorquePrep uses 80% as a conservative practice target, not as an official ASE cut score. The certificate is issued once ASE verifies your required work experience.
What the T3 test covers
The official task list for T3 Drive Train (Medium-Heavy Truck) breaks down into these content areas — the practice bank above draws from all of them:
- Heavy-duty clutches — adjustment, release systems, dual-plate designs
- Manual and automated manual transmissions — non-synchronized shifting, air shift systems
- Driveshafts and universal joints — angles, phasing, guards
- Drive axles — single and tandem, interaxle differential (power divider), lockouts
- PTO and auxiliary drive basics
Frequently asked
- How many questions are on the ASE T3 test?
- The T3 test has 40 scored questions plus about 10 unscored research questions, with a 60-minute time limit.
- Does T3 cover automated manual transmissions?
- Modern task lists include automated manual transmissions alongside traditional non-synchronized gearboxes — check the current ASE study guide for the exact breakdown.
- What is a power divider?
- The interaxle differential on a tandem-axle tractor. It splits torque between the two rear axles and can be locked out for traction — a frequent T3 topic.
Exam length, timing, fees, and content areas checked September 11, 2026 against the official ASE test table and ASE study guides.
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