Hi , i have a mk3 2014 skoda octavia 2.0tdi vrs dsg with 80,000 miles while driving car felt rough, as I proceeded for another mile car eventually shuddered and died out now will not start will start run for a second really rough and die out can anbody help ?  

There are so many sensors on the engine that without a diagnostic scan it really is impossible to suggest possible cause(s).

 

If you don't have a diagnostic tool such as VCDS or OBD11 or VCP then you need to find someone locally who can do a scan for you - this will show what sensor(s) should be checked as a first step.