I have no idea why it failed. It's practically brand new, and it quit on me and started giving off a burning rubber smell. I did not buy from a dealer. I bought it during a pandemic-driven, global supply chain crisis where there were NO MOWERS anywhere. My 10 year old Briggs had a failed part from the previous season, and the backorder on the part extended into the start of last season, so I researched the baddest, toughest, extended warranty mower I could find and selected this mower expecting long-lasting, HD service and performance. I then called every dealer, big box and hardware store in a 100 miles and found the LAST ONE in a Tractor Supply Store an hour away. So I put it on hold, dropped everything, went and got it and rolled my still-working Briggs to the curb for the trash to pick up. You want more? I'll give you more: It ran fine until it %$#@ing FAILED. I manage an OE engine parts plant, and if ONE of my pistons fails at Briggs, GM, Ford or Nissan, all hells breaks loose and I have OE SQAs all over my plant wanting root cause analysis ASAP. This mower sh*ts the bed after ONE year of light use, and I call a 1-800 number and get HUNG UP ON if I dial 0??? Yeah. UN-&^%$-ACCEPTABLE. My only alternative? Call the local number of any of the 5-6 "authorized dealers" the 1-800 number gives me, and they all tell me they are "2-4, 4-6, 3-5, weeks" from EVEN LOOKING AT MY UNIT TO DETERMINE THE PROBLEM. This is not a DEALER problem. This is either an engineering issue that was insufficiently developed and tested or a quality issue that screwed the pooch the day it was assembled. If you promote and sell a premium product, and it fails prematurely, you have an obligation to protect your customer from this level of frustration and your brand from having this level of vitriol trolled on every site I can find - up to and including a call to the SVP of Customer Service at Toro if and when I can find his name. NFW this is acceptable.