As others have pointed out, the mileage you are getting now is fairly normal. If you were routinely getting >550 km per tank that would likely have held the all-time record for fuel-efficiency in an ST1300.Ok, so the gas mileage I posted is the same for 6 tanks. The mileage is typical.
So, the mechanic tested the t-stat, it checks out good, no errors. He checked out things and said the average fuel mileage for those bikes is about 43 mpg, or roughly 430 km to a tank. Informing him the most I have ever got out of a tank was 580 km to a dead stop nearly knocked him on the floor! So now, I am getting at most about 430 to 450.
So I guess maybe I had a super awesome mileage machine, and now it is settled to the average. *shrugs*
Also your mechanic also seems to know what he's talking about, he is dead on with his efficiency and range estimates.
Last edited: