It's actually not loud - people keep on saying that on the online things I've been trawling. Maybe because it's gas? Or an otherwise well running car (other than odd things ... heater doesn't work, windows are temperamental ... usual "old used car" style things).


It was more a worry about noxious gasses - but if gas cars don't convert to carbon monoxide, that's irrelevant.

So I guess t's more a question now of whether it makes the car dangerous or unroadworthy or illegal - I don't want to do anything illegal, dangerous or that would risk me getting fined.

I'll find out how much it costs to get fixed, or how much it would cost to replace...