What is the highest Everest base camp that could be reach by vehicle or minimum trekking?

Hi, the vehicle can only take you to the place with the highest altitude of about 5,154 meters at Rongbuk Monastery, from where the Mt. Everest base camp is around 4km away and you have to hike or take the eco-battery car to reach.

Generally, travelers stay there for 4-5 days, but if you are interested and your health is ok, you can surely stay for 15 days. And you can turn to a travel agency in Lhasa to arrange the tour and it may cost much!