Are the headlights really sucks on a US Spec X166?
Recent video. All the cars around got the better light that my "Mercedes-Benz Intelligent Headlights"

Yes, got the bi-xenon
Freaking MB Intelligent Light System, which doesn't light
Actually I think you made a mistake as well. That car should be a Chevy SS. The quad exhaust and I think the side fender vents are the dead giveaways. If so, then it has LED according to the specs.
I watched your second video. Confirmed you have the HID. It looks much better in the 2nd video. Perhaps it is just a matter of illusion from your view point. Well the LED will definitely perform better. My wife's car with LED makes my GL seems to appear like halogen in comparison. I think it is about the same as the TL and definitely better than the Tiburon. At least my old eyes watching the video.
Interestingly, while HID is a better technology than halogen, and LED is a better technology than HID, the design and implementation of the optics matters the most. I remember driving a Lincoln MKZ with the LED headlamps and was sadly disappointed by their performance.
The IIHS did a study on lighting systems and found that the results for the different lighting types were all over the board both in lighting technology and cost of car/manufacturer. The lowest rated car in their sampling was a BMW 3-Series.
http://www.iihs.org/iihs/sr/statusreport/article/51/3/1
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Among the 44 headlight systems earning a poor rating, the halogen lights on the BMW 3 series are the worst.
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I've seen plenty of 3 series around here with just halogen. I pity those drivers who are probably ignorant or were fooled by the salesperson telling them they can simply switch out a bulb.
I saw a GL as well sporting halogen. Poor soul
Sadly I think a lot of people don't care about something they consider frivolous like headlights.
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Among the 44 headlight systems earning a poor rating, the halogen lights on the BMW 3 series are the worst.
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I've seen plenty of 3 series around here with just halogen. I pity those drivers who are probably ignorant or were fooled by the salesperson telling them they can simply switch out a bulb.
I saw a GL as well sporting halogen. Poor soul

The Best of Mercedes & AMG
But after driving cars with HID since 2000, it is hard for me to go back to seeing yellow halogen lights. While my wife's X3 with LED is noticeably brighter and more wide spread than the GL bi-xenon, I kinda like the uniformity of the beam pattern on the GL. I think it is a matter of getting used to it. I suppose if I drive her car 99% of the time and switch back to my car, then I would think differently.
Yes, the light distribution is very even, no doubts about that. But as you all can see from the video it's barely visible. 10 year in a row I'm only driving the cars with xenon headlights (02' 530d, 10' x5, 11' Sienna, 15' Mustang and now this 14' GL) and GL lights are by far the worst light producing assemblies from the list of vehicles that I did own.
Just a little conclusion from my side
- may be there are some problems with my headlights - bad reflectors, bad ballast or bad bulbs. But this is unlikely, since both headlights performs the same way.
- if they performs same way as your headlights folks and you do like how performs your headlights I don't know what to say

I know, there are variations of the headlights on those GLs. Some are halogens, some are non-intelligents xenon ligts, some are intelligent xenon lights and some are LEDs (on GLS). My experience is only with intelligent version (sucks, sucks, sucks
). It is quite possible, that other versions performs better (or much better) and this is the reason why you do like it.Mine are like on that picture:




I have been installing E-Code (Euro Spec LHD/RHT) headlights in all my vehicles since the late 90's. It has been the best improvement in lighting and aesthetics along with being the most justifiable.
Last edited by HETPE3B; Jul 28, 2017 at 03:03 PM.




