The mangled body of the first car to be crushed under anti-boy racer laws has raised more than $800 for the charity Youthline.

Macauley Metals, the company that last month crushed the Nissan Laurel that used to belong to Paraparaumu 19-year-old Daniel Briant, put it up for auction on the Trade Me website.

On Wednesday an Auckland buyer put in a successful bid of $818 for the "streamlined" metal box, which was worth $200 at most for scrap.

The final price rose from $402 in the last 10 minutes of the auction.

Nearly 100,000 people viewed the auction, and it has sparked dozens of cheeky questions, all of which received a dry-witted response.

Macauley Metals managing director Jeff Harris said they had cleared the auction with police first, and decided to donate the money to Youthline because there were "synergies" with youth problems and boy racers.

The $818 was a "reasonable result", he told NZ Newswire.

Briant lost his car under the Sentencing (Vehicle Confiscation) Amendment Act, which requires a car to be seized and destroyed following a third illegal street racing offence.