I don't know why many people on this site reply to a persons inquiry/question if they have nothing valid to contribute to solving the posters problem. Nulik, I am very interested in fuel
economy also. From my research
the PDQ Antares
came with engines ranging from 28 to 40 hp. Fuel consumption
for these different can be hard but not impossible to find.
A good way to get info is on YouTube. Search the boat in question and PM the vids poster/uploader for the info. Don't forget to like the vid and maybe subscribe to his/her channel.
This guy claims these numbers on a PDQ
44 with Yanmar 3gm30
The 40s should be about 10 to 20% higher
fuel curve ...
Speed (calm) Fuel
2400 4.5 .5 Gph
2750 5 .79 Gph
3000 5.5 1.05 Gph
3200 6 1.34
3400 6.5 1.71 Gph
this is the link
Cruising speed - PDQ Owners Forum