ASE A5
Brakes (A5)
The ASE A5 Brakes test covers hydraulic systems, power assist and parking brakes, drum and disc brake service, and electronic brake controls such as ABS, traction control and stability control. It is taken by technicians who diagnose and repair brake systems and counts toward ASE Master Automobile Technician status.
- Questions you sit
- 55
- Scored
- 45
- Time allowed
- 75 min
- GearheadPass questions
- 145
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 |
|---|---|---|---|
| Hydraulic, Power Assist & Parking Brake | 19 | 42% | 5 questions → |
| Drum Brakes | 5 | 11% | 5 questions → |
| Disc Brakes | 11 | 24% | 5 questions → |
| ABS/TCS/ESC | 10 | 22% | 5 questions → |
Study each area
A5 · 19 questions on the test
Hydraulic, Power Assist & Parking Brake
The largest A5 area: master cylinders, lines and hoses, valves and switches, bleeding and brake fluid, vacuum, hydro-boost and electronic power assist, and parking brakes.
A5 · 5 questions on the test
Drum Brakes
Drum brake diagnosis and service: hydraulic and mechanical faults, drum measuring and machining, shoes and hardware, wheel cylinders, adjustment and wheel bearings.
A5 · 11 questions on the test
Disc Brakes
Disc brake diagnosis and service: calipers, slides and pads, rotor measuring and machining, installation and burnishing, wheel bearings, and brake versus tire vibration.
A5 · 10 questions on the test
ABS/TCS/ESC
Diagnosing electronic brake controls (ABS, traction control and stability control): warning lights, scan tool and meter tests, sensors, bleeding, module setup and related systems.
Take a full-length A5 mock in the app
55 questions in 75 minutes, weighted like the real test, scored by content area, with English or Spanish on every question.
