u/Asanteniiba

I usually do motorway travels in Citroen DS4 1.6L Diesel, but I'm getting a Peugeot 2008 2016 model 1.2L Petrol.
I need some technical advice as to how the Peugeot will sustain my regular long travels, as someone told me 1.2L petrol for such motorway travels will strain the engine.
Any truth in this? And any extra advice welcome.
Thanks.