Hi Tim
I had a similar problem on my 2014 +4 GDI last year.
I did all the usual checks - fuel pump running then shut off, sparks OK, engine breathing OK - then gave up and had the car recovered to Tim Ayres at New Elms. They did further checks on sensors etc - all OK.
The final diagnosis was that the fuel pump was running but not delivering sufficient pressure.
New fuel pump fitted - all OK
