1999 Ford f150 xlt gas mileage Source Source Source Source Source Source Source Source Source Source Read Also: 1999 Ford f150 5.4 gas mileage 1999 Ford f150 fuel mileage 1999 Ford f150 4x4 gas mileage 1999 Ford f150 triton v8 gas mileage 1999 F150 ford gas mileage 1999 Ford f150 v6 gas mileage