yup mine regens in coast mode and even harder when brakes applied. also you get more in eco mode than sport mode etc. Its not a cure all but every little helps, as the battery in mine is small, being a hybrid. Its just an aid to extended mileage as much as anything, but it is used a lot in town especially in eco, so its quiet and clean at point of use. the smell off a diesel is surprising when your not used to it