what started luton airport fire

The Luton Airport fire is widely reported to have started from a vehicle in the multi-storey car park, and investigators later said the most likely cause was an electrical fault or component failure in the engine bay while the vehicle was moving. Early reports also said firefighters initially believed it may have begun with a diesel-powered car, but later findings pointed to an accidental vehicle fault rather than anything intentional.

What investigators said

• The fire started in the car park at Terminal Car Park 2.

• Bedfordshire Fire and Rescue initially thought it involved a diesel vehicle.

• A later investigation concluded it most likely began in the engine bay due to an electrical fault or component failure while the vehicle was in motion.

Bottom line

So, the best-supported answer is: an accidental vehicle fire, likely caused by an electrical fault in a moving car, sparked the Luton Airport blaze.

If you want, I can also give you a very short version of the story or a timeline of how the fire spread.