Meaning of the word "if it sounds too good to be true, it probably is" in English

What does "if it sounds too good to be true, it probably is" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

if it sounds too good to be true, it probably is

US /ɪf ɪt saʊndz tuː ɡʊd tuː biː truː, ɪt ˈprɑːbəbli ɪz/
UK /ɪf ɪt saʊndz tuː ɡʊd tuː biː truː, ɪt ˈprɒbəbli ɪz/
"if it sounds too good to be true, it probably is" picture

Idiom

used to warn that if something seems much better than expected, there is likely a hidden problem or it is a scam

Example:
The investment promised a 50% return in one week, but if it sounds too good to be true, it probably is.
He offered me a brand new car for half price; I told him that if it sounds too good to be true, it probably is.