AS FAR AS THE F115 FOUR STROKE GOES, IT'S A GOOD MOTOR IF YOU ARE LOW ON FUNDS. IT PERFORMS WELL WITH A FULL LOAD OF PEOPLE, FUEL AND YOUR BEVERAGE OF CHOICE. *EXPECT 33-35 MPH @ 6000 RPMS WOT AND A DECENT CRUISE OF 25 MPH @ 4600 RPMS. *THIS IS WITH A 16 PITCH SS WHEEL. SHE AINT NO ROCKET BUT FUEL CONSUMPTION IS NO COMPARISON TO THE OLDER 2- STROKES AND GAS AINT CHEAP!