A shitbox is a vehicle with one or more of the following features.

Rebuilt or salvage title

Spare tire on rim/donut

Cracked windshield

Broken window motor

Garbage bag on one or more windows

Exhaust leak

Squealing belt

Bad alternator

Aftermarket emblems

Check engine light is on

Etc..... You get what I'm saying 😉

A euphemism for “kill me” now that composting oneself after one’s death has become popular.

A motor vehicle of poor quality, that is valued at or bellow $1000 and is driven on the annual "Shitbox Rally" through extremely remote and isolated areas of the Australian outback. The idea being that each team, of which there are 250, needs to find a Shitbox and prepare it for the Shitbox rally without spending more than $1000 on it.
Teams are also required to raise money for the Cancer Council. Since its inception in 2010, the Shitbox rally has grown to become the single largest fund raising event for the Cancer Council. The rally now raises in excess of $1,000,000 annually for the Cancer Council.
The people that take part in the Shitbox rally often refer to themselves as "Shitboxers".
Teams travel to Australia from all over the world to take part in the Shitbox Rally.

something that is low quality or nonworking.

A car of poor quality or condition.

1. An automobile that is in poor condition.
2. An automobile that is prone to breaking down frequently. See cadillac

Australian slang for a beat up- rust eaten- fall apart type of car. ie a datsun 180b.