Hundreds of Queenslanders who have recently bought a second-hand car in Brisbane could affected by a major fraud operation.

Operation Dagobar detectives allegedly uncovered the vehicle fraud racket, while investigating a number of shooting incidents between two rival gangs.

Police allege $411,000 in cash has been seized along with 15 cars out of 155 which were examined for suspected illegal modifications such as odometers allegedly being wound back.

Other modifications allegedly carried out on the cars included adding new wheels, bull bars, providing false road worthy certificates and selling them on buyers for more on social media.

In one of the more extreme examples, a Land Cruiser bought by for $8000, with 400,000 kilometres on the odometer was allegedly sold for $54,000 and had just 5000 kilometres on the dash.

Police believe up to 700 other vehicles may still be on the streets, bought by unsuspecting Queenslanders looking to buy second-hand cars online.

Five people ranging in age from 23 to 47 have been arrested and charged with dozens of offences.

“There are certainly some groups that we have identified have been involved in a number of incidents, some of those have been shootings,” Detecting Acting Inspector Mick Corby said on Brisbane Live.

He said disrupting the crew takes away the funding source for the alleged crime groups.

Press PLAY below to hear more about the alleged bust

Image: Pol Air