I've been using this machine for about 2 months and I have to say, it has worked flawlessly up until this point. Not only is it a great vaccuum cleaner; using a water tank as the filter, it lifts dog hair and what not straight out of our carpets. It's also a very good carpet cleaner. It certainly out performed the upright Vax machines I tried which just soaked the carpets and leaked everywhere.
Now to the negative points, of which there are a few unfortunately!
1. Between vaccuuming and carpet cleaning, the machine's tanks need to be removed, cleaned and filled, depending on what you are cleaning. Once you know what you are doing, this can take at most 5 minutes though.
2. The hose does not untwist itself and will easily get kinked when you change direction. Again, once you are aware of this, you can avoid it. It can slow you down though :(
3. And finally, my biggest gripe, which is also down to the design is a rubber tube which feeds the shampoo from the machine to the head. It appears to be made of silicone and when you are shampooing the carpets, this tube fills with hot water and expands like a balloon until you pull the trigger to spray the shampoo and release the pressure building up in the tube. Mine burst and split open spraying the shampoo/water everywhere.
Bissell customer services are 9-5 Monday to Friday and a few hours on Saturday morning only, so I have yet to be able to contact them.
All of these problems may be down to my particular machine as it had only just been released when I bought it and these flaws may have been fixed by now.
If I had written this review a month ago, it would have received 5 stars from me as it is a great little machine with large tanks that genuinely does clean carpets. For now it gets 4 stars until I can get it repaired