The blaze broke out in Terminal Car Park 2 at about 20:45 BST on 10 October and "rapidly escalated". In a joint report, Bedfordshire's fire and police services said the most probable cause was an electrical fault or a component failure in a moving diesel vehicle. It became "overrun with flames" which spread to other vehicles, it said.

A fire investigation into the blaze that broke out in a multi-storey car park at London Luton Airport was accidental, the fire service can confirm. At its height, more than 100 firefighters tackled the fire, which started in the evening of 10 October 2023 and saw aircraft grounded until the following day.