Poor gas mileage with Honda Forza 300

[Whitestix]

I bought a 2014 Forza 300 three years ago with 80 miles on it and it has been my daily runner since then with about 4K miles on it. Initially, I got about 60 mpg but recently it is getting about 45 mpg. I am not a wrencher beyond changing oil so I I have to rely on a local scooter mechanic for anything else. The performance of the machine seems the same as when I got it, peppy as can be, but what can be the reason for the poor gas mileage? The tires are properly inflated and I checked the brake calipers, but the wheels spin freely. What might be the cause of my dwindling gas mileage? Thanks.

[mymitzi]

Since you say it's your daily runner, maybe it's not getting up to operating temp enough. [averaging a bit over 1300 miles a year]
Fill it up and take it for a long ride and avoid high speed. Keep it under 50 mph for 50 miles.......you may notice an improvement.
High speeds and not getting it warmed up, may be a factor.

[Whitestix]

Thank, I will take a long slow ride.

[jburner]

Make double sure your rear brake isn’t dragging

[Mon-Eye]

Has ot been serviced ? I would be changing the oil put every year. I'd also check the plug condition too. After that I'd check the brakes aren't binding before a ride and after some heavy braking. Brakes could be dragging once they are warm. check the drive belt and olers in the variator too. If the rollers have flat spots change them and if the belts getting thin or deteriorated then swap it too.