> I know someone with a 6 year old Tesla X that now has a range of around 120 miles Yeah, I really don't think you do. That would be an outrageously wild outl

> I know someone with a 6 year old Tesla X that now has a range of around 120 miles Yeah, I really don't think you do. That would be an outrageously wild outlier. As others are pointing out, the simple warranty terms promise a 4-5x lower degradation. I won't say it's impossible to break a battery that badly in six years, but if it happened your friend is doing some crazy stuff to their car. More likely you're misunderstanding or they're spinning. Maybe you heard them talk about wanting to plan road trips with 120 mile legs or something (which is a pretty routine thing -- trips can actually be faster if you charge often at low capacities).