Top speed for the Tahoe Pontoons 24 Sierra Elite is 18.8 mph (30.3 kph), burning 4.9 gallons per hour (gph) or 18.55 liters per hour (lph).Best cruise for the Tahoe Pontoons 24 Sierra Elite is 6.6 mph (10.6 kph), and the boat gets 7.72 miles per gallon (mpg) or 3.28 kilometers per liter (kpl), giving the boat a cruising range of 250 miles