Mine lasted 3 seasons. (Aquabot standard)
Into the 2nd season, I had to replace the drive belts (20.00) These were simple plastic belts that probably cost them 1.95/pair, but what are you going to do when the company wants to make 1000% markup. By the end of the 2nd season, it wouldn't move properly, so I had to replace the drive tracks, $23.00 each, then it was the bushings. So now, the beginning of the 4th season, I replaced the roller brushes, $80.00. Drive belts again, $20.00, misc rollers and bushings, new filter bag, $50.00. The total this summer was 279.00 with shipping from NJ. So here it is June 6th, 2010 and the drive motor is shot. They want $290.00 for it. Once I but this, I'll have spent almost $600.00 bucks this year alone ans the pump motor will probably go after that. Not to mention, I am doing all the labor myself. I called Aquabot and spoke with a guy when I bought the $290.00 worth of parts and he stated that the pump and drive motors usually last 7 years. I can assure you that this unit has always been well maintained. I am highly disappointed and would NOT recommend this purchase to anyone.
