2016 GL450 vs 2017 GLS450
With the new GLS 450 you get updated infotainment with a larger screen that is tablet type vs in dash. Also comes with apple car play and android auto. New dash material, and steering wheel
I believe the headlights and tail lights are also slightly different
Transmission is 9 speed vs 7 speed in the GL
based on above the extra 5k would seem worth spending






