The brake pedal feels spongy when pressed. Which of the following is the most likely cause?

Practise this ASE Auto Test Prep question free, then download the PDF, watch the video walkthrough, or unlock timed mock exams for the full web bank.

Download PDF Watch video

Multiple choice — select the best answer

AWorn brake pads
BLeaking master cylinder
CAir in the brake lines
DWarped rotors

✓ Correct answer: C. Air in the brake lines A spongy brake pedal is typically caused by air trapped in the brake lines. This air compresses when the brake pedal is pressed, which gives the pedal a spongy feel. A leaking master cylinder could also cause brake issues but more often results in a sinking pedal. Worn brake pads and warped rotors usually result in noises or vibrations rather than a spongy pedal feel.

.q-expl{display:block!important}.q-opt[data-idx="2"]{border-color:#16a34a;background:#f0fdf4}.q-opt[data-idx="2"] .oltr{background:#16a34a;color:#fff}.q-opt{cursor:default!important;pointer-events:none}

Keep practising. Use the free ASE Auto Test Prep PDF, watch the YouTube walkthrough, or unlock all 10 web questions with timed mock exams.

Free PDF Video walkthrough

← Previous Next → 🎲 Random question ↩ Back to all questions

Keep practising

The brake pedal feels spongy when pressed. Which of the following is the most likely cause?

Related questions

Free practice here. Timed mocks when you are ready.