Citroen C4 engine won’t start

Even though it's new , get your battery , alternator , both load tested . It could also be a faulty starter that may show with a starter motor draw test . Could also check all earths and battery terminals , plus wiring / connections at starter .

Thanks car back at garage for 3rd time they seem flummoxed. Needless to say it doesn’t do it for them.

If fault cant be replicated , makes it hard to find . Could also check earth from engine / gearbox to bodywork . There could be a bad bit on the starter , dependant on where it stops