ASE A4
Suspension & Steering (A4)
The ASE A4 Suspension & Steering test covers steering columns, gears and linkage, front and rear suspension, wheel alignment, and wheel and tire service including TPMS. It is taken by technicians who handle chassis and alignment work and counts toward ASE Master Automobile Technician status.
- Questions you sit
- 50
- Scored
- 40
- Time allowed
- 60 min
- GearheadPass questions
- 169
From ASE's 2026 study guide. The test includes 10 unscored research questions you can't tell apart from the scored ones.
Content areas and weights
| Content area | Questions on the test | Share | Free practice |
|---|---|---|---|
| Steering | 12 | 30% | 5 questions → |
| Suspension | 12 | 30% | 5 questions → |
| Wheel Alignment | 11 | 28% | 5 questions → |
| Wheels & Tires | 5 | 13% | 5 questions → |
Study each area
A4 · 12 questions on the test
Steering
Steering column, gear and linkage diagnosis and repair, including power and electric assist systems, airbag precautions, pump and fluid service, and tie rods and idler arms.
A4 · 12 questions on the test
Suspension
Front and rear suspension diagnosis and repair: control arms, ball joints, springs, struts, shocks, stabilizer bars, wheel bearings, subframes and electronically controlled suspension.
A4 · 11 questions on the test
Wheel Alignment
Diagnosing pull, wander and steering return concerns, then measuring and adjusting alignment angles and recalibrating related electronic systems.
A4 · 5 questions on the test
Wheels & Tires
Wheel and tire service: reading wear patterns, checking size and ratings, mounting and balancing, runout and vibration diagnosis, and TPMS testing and relearn.
Take a full-length A4 mock in the app
50 questions in 60 minutes, weighted like the real test, scored by content area, with English or Spanish on every question.
