I just checked again. Its 8 years 100,000 mile warranty for the powerboostI would agree, but from what I understand this hybrid design is very similar to the Fusion Hybrid and its been around for years. They give you 8 yrs 160 thousand mile warranty, that should more than cover any issues (at least that was what I was told). That is even more coverage than the regular ECOBOOST engine and regular transmission at 100000 mile. (I think my warranty numbers are correct).