The deadline for the Lunar X Prize is next year, and according to wikipedia one of the teams has a launch contract with SpaceX. Does SpaceX have a rocket capable of making it to the moon?
At least that's what the FAQ says [0]:
> [Part-Time Scientists] will join a commercial space flight, e. g. a rocket launch to orbit. From there, their own lunar lander module will travel to the Moon, the final task being to land safely and release the rover.
[0] https://meta.m.wikimedia.org/wiki/Wikipedia_to_the_Moon/FAQ#...
Delta-V = Exhaust velocity x natural log(mass full / mass empty).
As the "mass empty" is very dependent on the payload size, it will indeed change a lot!
Another interesting read in this aspect is the Dawn Spacecraft, which had a big delta-v because of its ionic thrusters: https://en.wikipedia.org/wiki/Dawn_%28spacecraft%29#Propulsi...