Flames destroyed multiple vehicles in Port Kennedy, with explosions heard from suburbs away.

Seven vehicles went up in flames about 9.30pm yesterday, leaving the Paxton Way smash repair business looking more like a furnace.

“I heard a bang then another big bang,” witness Aimee Leigh Brown said.

“I was a little bit worried, I didn’t want to come out. And yeah just a lot of noise for a very quiet area.”

Emergency crews forced their way on to the property, cutting through a wire fence to fight the flames

A nearby paint workshop full of flammable liquids was another concern for firefighters.

Car owners arrived today to see what was left.

The investigation is ongoing but police believe it could be the work of an arsonist.