BMW has updated the “build your own” website to reflect the changes made to the 2018 4 series. Among the changes is the new “Essentials” package that includes comfort access, satellite radio and parking sensors. A rear view camera is now standard and the old cold weather package must now be ordered as two separate options (heated seats and heated steering wheel). For more on the 2018 4 series head over to BMWusa.com/byo.