Police who pulled over a man driving a vehicle with “defective and worn out tyres” were shocked when they opened the bonnet to find a bizarre gardening tool inside.

The white Holden Commodore’s driver, a 35-year-old from Whalan in Sydney’s west, had fixed a garden blower to the vehicle’s air filter box.

In a post to the NSW Traffic and Highway Patrol Command Facebook page, police said the driver claimed he installed the blower to “improve engine performance”.

View photos The Holden had "seriously defective and worn out tyres" when police pulled it over on Tuesday. Source: Facebook/Traffic and Highway Patrol Command - NSW Police Force More

View photos The driver had fitted a garden blower underneath the car's bonnet. Source: Facebook/Traffic and Highway Patrol Command - NSW Police Force More

The orange tool had been wired to the engine’s battery to blow air into the engine.

Police pulled the man over on Tuesday about midday during random testing operations in Dharruk, about 46 kilometres west of the CBD.

“An examination of the vehicle was carried out and it showed the vehicle to have seriously defective and worn out tyres,” the Facebook post read.

“On inspection of the engine bay an everyday ordinary garden variety blower vac was located in the vehicles air filter box.”

View photos The driver tested positive the meth. Police also found his tyres to be almost bald. Source: Facebook/Traffic and Highway Patrol Command - NSW Police Force More

The driver also tested positive to having methamphetamine in his system both in a roadside test, and in further testing conducted at Mt Druitt police station.

He was then issued a 24-hour driving prohibition notice and defect notice.

Police said they were still awaiting a return on laboratory results.

A Sydney police officer was last month filmed calling a female driver stupid for approaching a breath test too slow.

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