I recently purchased a Honda accord 2018 hybrid which has been driven 100k. I live in canada, yes it is currently cold, but nothing too drastic and I am getting horrible milage. 580KM on a full tank (Around 360 miles). This is horrible compared to other accords I know about that get at least 700-750KM in winter in Canada.

Do you guys think there can be something wrong with it?

anything helps! thanks

 

Typically when any hybrid starts to get poor MPG, it is an indication of the hybrid battery failing.

Average life span for hybrid batteries are around 100k-150k miles.

Although it could be something else entirely, either way youre down about 40% per tank,Id take it in to get looked at.