האם ניתן לבטל רכישת רכב בעקבות הטעיה על תאונה שלא נמסרה?

Two weeks ago I bought a car without an official test (bdika tknija). The purchase was made with all the official documents (avarat baaljut).

The ex-owner of the car said that if there were any problems with engine or shelda she would participate financially to fix that kind of problem.

After the test (bdika tknija) it was found out that the car was with those problems, in addition it was in an accident. The question is: can I return the car to its ex-owner and get my money back?