Rough idle?

[Filip10333]

Hello,

Looking to buy a 2021 2.0 skyactiv Mazda 6 from a dealer.

After the test drive I noticed the revs going up and down ever so slightly. This is only when the car is warm and AC is on. Dealer says it’s normal on these engines.

Is this correct? (Video attached)

 

[N7turbo]

Normal; AC compressor cycling.

 

[Filip10333]

Normal; AC compressor cycling.

Thank you, odd to me as I have never been in a vehicle that does that. None of my previous cars did.

Any actual reason for it from what you know?