Skip the auto shop - Our mechanics make house calls

Q: Brakes make a swoosh sound

asked by on

I am thinking about buying a Prius and I test drove one at the dealership. I noticed that whenever I pressed the brakes, I heard swoosh sound. Almost as if air was being released. Does that seem normal to you? Right now I have a 2007 Prius and it does not make that sound. The dealership say it is a normal thing for hybrids.

A: Things change as technology advances. Most ...

Things change as technology advances. Most hybrids have a regenerative braking system to charge up the hybrid battery. If Toyota has changed the design of the regenerative braking system since the year of Prius that you own, it is very possible that the noise you hear could be a normal part of its operation. I would recommend test driving one or two more newer Prius’ and see if they make the same noises. If they do, the sound must be normal. If not, you were lied to by the spokesperson at the dealership.

If and when you do decide on a new car, consider having a mobile mechanic come out to the location of the vehicle to perform a thorough pre-purchase inspection.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Hey, So I believe I may have blown my heater core..

Hello. If you are getting a coolant smell in the vehicle then it is possible that the heater core is leaking. I usually check for the leak first visually and then do a pressure test that will help me to...

Q: Oil pressure warning light flashing

The first thing I would recommend doing after seeing a warning like that on your vehicle is to check the engine oil level. When the oil level goes low, this can cause the oil pressure to go low as well....

Q: How do I use the turn signals?

The turn signals are important safety features that alert your surrounding drivers of your intention to make a turn. To signal a right turn, pull up on the turn signal lever (located on the left side of the steering column),...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...