I have a 2008 Challenger 180 with the same 215 Hp engine and found the GPS and spedometer both match within a couple miles per hour. With 3/4 tank and three people the boat we can do about 45 to 48 mph depending on water conditions full throttle. You may wish to have the spedo checked out at the 10 hour inspection to see if the spedo is Ok. We noticed a change for the better with fuel consumption after our 10 hour break in period. Really has been a great family boat.
Find content
Male
