Dude, where’s my car? ... Grandmaster Flash’s car was given away by a valet in a case of mistaken identity. Source: Supplied

A dopey Manhattan garage attendant gave away the hip-hop legend’s cherished ride to a thief — and then told the furious musician that the guy looked just like him, the New York Post reported.

“Homeboy told me he gave my car to somebody with no ID that looked like me — what?!” Flash said in a video he posted to his Instagram account.

The early-rap pioneer, whose real name is Joseph Saddler, dropped off his white 2014 Dodge Charger at the garage in Manhattan on July 16 at 7.30pm so he could get his laptop fixed nearby.

When he got back and was delivered the bad news, the DJ famous for classics like “The Message” and “White Lines” assumed the worker knew him and was playing a cruel joke.

“Maybe this guy is playing a punk joke on me, or maybe he knows who I am and he wants to see if I’m gonna get crazy,” Flash told TMZ.

The car attendant told him the man he gave Flash’s ride to was dressed like him “minus the Pumas”.

“If he knew that much of kicks WHY did he give the car up — dude had no ID,” Flash wrote on Instagram.

Whoever took the US$45,000 ($61,600) ride also got a vintage record worth US$30,000 ($41,000), an Avalon preamp worth US$5,000 ($6,850) and a microphone worth US$15,000 ($20,500), sources said.

NYPD cops took a stolen-car report, but have not found the vehicle.

The worker who gave away Flash’s ride was fired that same day, according to another parking attendant at the Ultra Car Park Systems garage.

“Somebody come and take the car without the ticket,” attendant Nilo Peralta said, referring to the day of the incident.

Peralta said it was a clear breach of protocol.

“When something happens ... you come in and say, ‘I need my car,’ ” he said. “If you don’t show me the ticket, I ask something about the car or ask for the address inside the registration or car. Things like that.”

Flash is currently working with Australian film director Baz Luhrmann on a Netflix series titled The Get Down. The show, which comes out next year, is being described as “a hip-hop musical TV drama”, and is set in New York in the 1970s. It will be the first time Luhrmann, know for films such as Moulin Rouge! and The Great Gatsby, has directed for television.

Grandmaster Flash is a series producer, while the cast is said to include Jaden Smith, Giancarlo Esposito from Breaking Bad, and Mamoudou Athie (who plays a young Grandmaster Flash). Luhrmann’s wife, Oscar-winning costume designer Catherine Martin, is the show’s costume and production designer.

This story first appeared in the New York Post.