Please don't forget to put the age of your car into consideration.
If you car is relatively new (under two-three years), then rent it. The reason is the more mileages (more tear and wear) you put into your new car, the less resale value of your car will be.
And if it is old (make sure it is reliable and trustworhy though as 几千公里 is a lot of milegues), then you might as well use it.