That Euro 5 is import and it's not avaibale country wide. Secondly dont confuse the emission standards with the octane number. HS need 95 octane and which means high octane and it's an import in Pakistan already . 92 octane no matter Euro 5 would not be a recommended fuel for the HS.
Local regular blend 92 is still with high level of MMT and local refineries are importing octane boosters and adding for local production. Euro 5 obviously is an import and have minimal or almost zero PPM of MMT.
This is the reason we had issues with the Civic Turbo. 91 Octane is the recommended fuel but the local blend is with high level of octane boosters.
Please read a detailed article I posted almost 4 years ago
https://www.pakwheels.com/blog/oil-companies-threaten-honda-atlas/