For what it is worth, I have a MX 1825 with a 200 on it. I’ve seen 53 MPH but it was in rough water. Got 18 hour on it so far but have not had any smooth water to see what it tops out at. The place in Illinois I bought it at said they saw 55 on the Illinois river. I does not to use much gas. Wasn’t sure the gas gage on the digital gages was working. Finally determine it was but the motor didn’t use much gas. Super quiet even at speed. Have a 19 Reliance prop on it. Really impressed with the motor. Had an E-Tec before on the Lund I had.