I have used the service of Ah Tee/ Ah Meng @ City Cycle on my W126 and W140, Reputable guys who are genuine on what they do.
Generally got good vibe with them and they are knowledgeable to what they do.
Price are reasonable too
I also appoint Ah Sang from Wilayah Auto for my W140. Not a fantastic place as is shabby but workmanship is good! Price is cheap!
The boss will give you full attention and check your car out throughly. Only drawback is you gotta wait and only if you dont mind the shed like workshop.
There is another guy call Lim in OUG BHP petrol station. Ex C&C MERCEDES apprentice. Used to send my mom's W202 C200 to him for service. Very well known among OUG Merc kaki (Surprise but you ll see almost every other household, there is a MERC in this high density Chinese residential.) Price is ok but place is always jammed pack and they do all sort of cars as well.
I also send my Mercs to the Alex of OKR for electrical stuff. Good and resourceful man that can sort out some odd parts either new or used.
A fan of W123 and W126 Himself.
For Southern brother,
I think G Performance is a good place for the MERC. Ask for GAN the owner. I have consult him a few times over the phone and he is knowledgeable and friendly to help. I heard he has a very clean and well run workshop too.
hope this helps
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