This Dyson vacuum is in excellent mechanical condition and runs as good as the day it was manufactured. Even though this vacuum ran perfect and did not need it, before we sell any Dyson Vacuum, we have our service department completely go through it and give it a 30-point inspection and service, replace any worn parts, and professionally clean it. Dyson vacuums are very popular. They are very popular for being powerful deep cleaners and since they are bagless you will never have to buy bags for them. They are designed to not loose power as they fill up with dirt like other vacuums.