Can I lie about my new car?
You should always tell the truth.
I've had an accident with it and that's why the body was repaired.
Why lie about it? Lying is wrong and just gets you in trouble.
My dad always tell me that it's gauche to admit you don't have cash, it makes people feel bad.
There is no reason to lie about your car being damaged. I think many people have had this happen to them.