[Infernal]

Your car wouldn’t happen to be a Volvo would it?

[jandrese]

Mini Cooper. From what I've heard it's a BMW thing.

[chaboud]

BMW and Toyota have famously used bio-derived insulation reported to be like catnip for rodents.

The bio-oil plasticizers also migrate out more quickly in thermal cycling than the old dead dinosaurs approach. Hilariously, when I asked my mechanic about getting an M5, he laughed and explained that the radiator components are known to turn brittle and crack after 5-6 years because of this.

(I don't envy automotive folks. The stuff they have to deal with is next level.)

[userbinator]

1990s Mercedes would be my guess.

[pseudohadamard]

This is why you need a 600 Mercedes, made from lead and asbestos and concrete and VOCs and other stuff, that won't fail under any circumstances.