Firefighters’ lives were placed at risk on Saturday as cars were deliberately set alight at J&N Motors on Leighton Road, Stanbridge.
Bedfordshire Fire and Rescue were alerted by the police at 23:27 after officers had spotted smoke in the area.
Two fire engines from Leighton Buzzard Community Fire Station were sent to incident and when they arrived they found six cars on fire.
The heat from these burning vehicles also affected cars on the forecourt of Classic Car Sales, next to the J&N Motors site.
THe LBO understands that four vehicles were completely destroyed by the fire.
Firefighters, who were put risk from flying debris, used two fire hoses and four breathing apparatus to fight the blaze.
Station commander Steve Allen, who investigated the fire, said: “From our preliminary investigation it appears that several cars were daubed with paint before their windows broken and the upholstery in at least one car set fire to.
“As the vehicles burned the air bag units and the tyres were affected by heat and failed, causing minor explosions that ejected chunks of glass and burning aluminium, from the alloy wheels, up to twenty metres away.
“If a firefighter had been in the path of these missiles they could have been serious hurt.”
He added: “Setting a fire like this is not only irresponsible but could have caused severe injury to firefighters doing their job.
“We are working closely with the police to identify the culprits.
“The fire has also led to considerable cost and disruption for the affected businesses”