Wonder what the insurance answer is if your vehicle has been affected if its only third-party insured? I bet the T&Cs on the car park exclude damage caused like this where the owners aren't negligent?
Doesn't not having a working fire suppression system count as negligent?
Well, no, it seems.
From Eversafe (who sell sprinklers):
Have you ever spotted a sprinkler system in a multi-storey car park? It’s unlikely. That’s because, under the current Building Regulations for England and Wales, it is not a legal requirement for enclosed multi-storey car parks to feature this form of fire protection.