I've only driven 2000 miles with my 2017 Latitude but I really dislike the ESS. If I drove a lot of stop and go city driving with long lights it might be worth it but in my case ESS is simply an annoyance and I really wish I could permanently disable it. There is no good reason for the engine to shut down for the very few minutes I wait at traffic lights and stop signs each day. I disable ESS every time I start the engine and curse every time I forget to and it engages. I also wonder how long the starter motor will last with ESS and how much it costs to replace it? My 2 cents.
2017 granite crystal Latitude ADII, 3.2, Uconnect 5.0 with 9 speakers, cold weather, safety and convenience, more to come.