My car has been using a lot of oil recently so I asked my garage to check it when it went in for a service. They said they couldn't see anything wrong and as we've been doing a lot more miles than usual we put it down to that. A month after the service it was really low again so I took it back and said there's definitely something not right and also that it was now blowing out a lot of white smoke when accelerating. They looked at it again, said they still couldn't see anything and chucked some cleaning additive in. They said if the oil has been low it may have dredged up some old stuff, but thinking about it that makes no sense because surely it should have been drained and replaced as part of the service? They said give it two weeks and see how it goes.
Just over a week later its broken down. In limp mode, orange flashing engine light and a fan going crazy under the bonnet. The manual says not to drive in case you mess up the catalytic converter and google suggests it could be a cc problem and early signs theres an issue with then cc can be excessive oil consumption!
I am not very happy as I think they've missed something and now I'm concerned the cc might be totally buggered because the underlying problem was never fixed. Obviously I won't know for definite until they've looked at it again.
I don't know much about cars so Aibu to think the excessive oil consumption and now breakdown issue are linked? How do I approach the garage about this?