my personal impression - from watching cars around here - is, that You possibly are "tricked" bei Mercedes' (as well as BMW's) HID lights,
they seem "brighter", because their output is very high in the blue.
Try to check for that.
In fact, usually, when comparing with passing cars (moving the same direction), i have the impression that the lights of my Alfa Romeo Giulietta do offer more light, but they are lower in Kelvin ... if it were chooseable, I would have opt for that exact neural/warm white output color over any HID from MB, BMW, Audi, .., whatever other makers, as - till now - i have never seen other than ugly blue from them.
But there is an incerasing number of cars that run 4 HID already - those are really bright, of course
(maybe that are already models with 4 LED-Main lights?) :thinking:
PS: at my car the switching is:
Low/main beam: 2 * HID,
High: 2 * HID (w. shutter off) + 2 additional halogen high beams
(to be honest: the halogen are not that important/noticeable. They are only really visible, when the HID move their light to right/left when doing sweeps. Then the halogens still go forward. The key of the output is the release of the shutter of the HIDs, that is blocking a good portion of the light coming from the bulb/burner in low)
when not in high, the shutter cuts off the beam(s) at the upper edge to fight blinding oncoming traffic. That is "moving" according to load inside car, bumps, braking, accelerating, ... And the standard setting is more on the "too low" than on "blinding high"; I would wonder if they were set up too high at that SUV