Chinese windshields? Nein danke. OEM German ones? Ja, bitte
These Mercedes-Benzes back in the day came new with Sekurit or Sigla glass.
I'd insist on these. Though they are difficult to get nowadays;
I understand that Pilkington glass is now used by Mercedes-Benz in their new vehicles and have been, for awhile.
I was referred to a mobile glass company to put a new windshield in my '91 560SEC some years ago, but was reassured that XYG glass was what they used, for only $280 plus the install.
(2 years prior, I'd had a proper Sigla windshield put in, but I was charged $1,200 for it at a "reputable" brick and mortar shop in Oakland California. But it was a great windshield and a perfect install.)
BUT while this mobile - based installer was installing it, I googled it and XYG = Xingyi Glass Company of Shanghai!
But it was too late. The new windshield was almost installed at that point...
My checking indicates that if you BUY cheap Chinese communist winshields, you GET a cheap Chinese windshield.
Common problems with these include (but are not limited to), optical distortion and clouding.
Seven years on, I have noticed that it picked up a lot of grit, sand and tiny nicks I'd never seen in 47 years of driving other cars.
A reputable and experienced installer is necessary. I inquired about the foreign accent of the installer installing my car at my house, and to my shock, he said he was from Burma, he had never done one before, and mine was the first job he ever did, and he was in a big hurry because he had two more jobs to get to in another city.
Never again.
Take it from the benefit of my experience, get OEM Sigla or Sekurit if possible and have a well experienced installer do the job -- right the first time.
The fellow assigned to my car didn't quite properly align the chrome along the top (there were two pieces to fit either,) but it was close at least, and nothing ever leaked, or made noises so I decided to make do, as (in my thinking) yet another try by them could have made things even worse.
In sum, remember the slogan under which these old Mercedes Benzes were built and engineered with, back when new: "The Best or Nothing At All".
It should apply to replacement parts - like a windshield too - in my mind at least.
If it was a 1988 Hyundai Pony, though, I guess cheap as possible would be fine and dandy.