2007 scenic engine dead.

So bought this 2006 Diesel Scenic about 3 months ago from a small dealer. Few weeks in got a "check injection" message on the dash.Brought it back and was told it was fixed.Not sure of exact resolution.Have been away with the car and On Sunday evening the message came up again and the car ran "rough". Parked it up for the night,next morning on route to local mechanic after a few hundred yards the engine gave a grimacing rattle and squeal and I killed the ignition. Got it towed to said mechanic and preliminary investigation suggests major engine fail to be diagnosed via a strip down.



Here is the crux of the issue. The car is in 3 month warranty provided by dealer by ONE DAY!!! Trading standards have advised me of my rights also. Initially I've had to transport the car back to dealer at my own expense for him and his mechanic to have a look at it.



So I'm just reaching out there to the wider audience for some advice,thoughts and or ramblings



Thanks