This is a classic joke, but this version is the one my uncle told me :
In England a middle-aged woman had just bought a Volkswagon Beetle and while driving home she stopped at a gas station to fuel up. As she was doing so, she popped up the hood and saw that it was empty and cried out “Oh no, someone has stolen the engine of my brand new car.”
A sardar who had bought a Beetle from the same showroom was at the same gas station and heard this. He came to console her and said “But don’t worry, I have a spare one in the back.”