My throttle cable broke and they replaced it for free. My mower doesn't go up hills as well as it did new. It could be lighter. It could have a more powerful engine. Those are all the negative things I can think of. Over all it is a great mower. I have enjoyed it a lot. I have mowed 20 lawns each week with it for 3+ months so far. I mulch almost all the time and it does a good job. When one bags it fills the bag up really tight at nice. It fits through 95% of gates where I live. I have the mulching kit, and frankly I can't tell a difference between using it and using just the standard plug. I mow solo and can mow 15 lawns before it runs out of gas. For me that's about 7 hours of mowing including driving edging etc.