A motorist in a stolen BMW rammed into two NYPD vehicles and injured four police officers in Queens Thursday night — just a day after he was arrested for allegedly stealing another car and let go, cops said. 

Nicholas Deosaran, 20, had been released without bail on a desk appearance ticket Wednesday — and the ink was barely dry on the paperwork Thursday when he allegedly went for a dangerous joyride in another stolen car at about 9:30 p.m.

As he cruised through St. Albans with his girlified in the hot 2011 BMW 3 Series — which he had allegedly first boosted back in September — officers from the Queens South Auto Larceny Unit identified the car as stolen and tried to pull him over, according to police and prosecutors.

When he reached the intersection of Merrick and Bailey boulevards, he allegedly shifted into reverse and collided with an unmarked police car occupied by one officer.

Then he drove off and struck a second unmarked vehicle with three cops inside, authorities said. 

Deosaran and his girlfriend were taken into custody — though she was later released, police said. 

The four officers were taken to a local hospital with minor injuries, cops said. 

He was hit with two counts of assault on a police officer, two counts of attempted assault on a police officer and one count each of reckless endangerment and grand larceny auto.

He was also charged with criminal possession of stolen property, obstructing governmental administration, unauthorized use of a vehicle, aggravated unlicensed operator and operating without a license, cops said. 

While in custody, he was also charged with a separate petit larceny incident from January, police said. 

Deosaran admitted to police that he knew the BMW was stolen, prosecutors said at his Friday night arraignment, where he was ordered held on $50,000 bail in connection to Thursday’s case.

“I got the car from my friend, I know the car is stolen, my friend has a shop where they get stolen cars, I use the car to work,” he told police, according to prosecutors. “They usually put a plate on the car so I can use it for work,” he reportedly added.

A day before allegedly injuring the officers, Deosaran was busted for a car theft that occurred on February 26 in Brooklyn, cops said. 

The driver left the key in the ignition when Deosaran allegedly swiped it. It wasn’t immediately clear how he was tracked down and connected to the crime. 

He was charged with grand larceny auto, released on a desk appearance ticket and is scheduled to appear in court on Nov. 7, police said. It was not clear Friday why he was only given a desk appearance ticket on the charges.

Deosaran was previously arrested on June 29, when he was linked to two grand larceny auto incidents and also charged with criminal possession of stolen property, authorities said.