Strangers send boy, 13, multiple Xbox systems after he sells his to buy struggling mum a car

A young Nevada teenager's selfless act has made headlines around the world after he bought his struggling single mum a car.

William Preston, 13, traded his Xbox and did yard work in order to pay for the vehicle, a white 1999 Chevrolet Metro.

Kimberly Martinez, who traded her car to the teenage boy, said she never expected her car advertisement to go viral.

"It's so nice to see kids that are not thinking about themselves, but thinking about their parents as well," Ms Martinez told ABC News in the US.

William, who received multiple Xbox One consoles following the viral moment, said he would "give a couple of them that I don't use to the hospitals".