At least on my 2018 Ford F150
At least on my 2018 Ford F150 I have a switch to deactivate it but I have to select it every time I start up the engine. Obviously however the vehicle was certified by the EPA means that you cannot defeat any of those emission features. This applies to the start stop technology. GM by 2020 will have a non defeat start stop which you cannot override. It's definitely why I won't buy a GM vehicle ever again. We all used to be told that frequent starts and stops wear out engines more than anything. Now all of a sudden its perfectly fine which I call BS. It's just because the manufactures get a break on Cafe standards by implementing this. They could care less if your engine wears out faster, or that your starting system will require more repairs.