No, I'm sorry, we're going to keep everything public here at Fuelly. There are other services that provide private mileage tracking like
MyMileMarker so that might be a better fit. Sharing results is one of the primary aspects of Fuelly, and we don't want there to be any confusion about what is shared and what isn't because everything is shared.
That said, there's no obligation to use your real name or link to Fuelly from other places on the Web where you use your real name. So it is possible to use the site somewhat anonymously.