I have a possible engine failure issue. When I do a cold start after sitting for a day or more, it has a very loud rattling noise like the upper end is not getting enough oil when started. The engine also has a tick at idle. The dealer says they can take it in two weeks (that's when they are willing to give me a loaner). I've had many issues with my car. I have driven an S Class for the last 20 years. My W222s versions were so much better.

I am very disappointed with all the electrical issues with the car too. The car has been in the shop for over 6 times and 60 days total since I have own it since May 2022. I wish I could attach videos, but they are too large to upload.

 

That is so strange, what rattle is it can you record the rattle for us to hear?

 

It sounds like you got a lemon. Sorry for your luck. Are you able to lemon the car?

The tick at idle might be the high-pressure fuel pump and is normal. Let us know what the dealer says.

 

My 2022 ticks at idle, too. It has to do with the vacuum system and is normal - or so I was told. The rattle is another matter. If you live in the US, have you called MBUSA to report?

 

Loaner is SO SO SO dealer dependent. For me, if I go to Orlando (Mercedes of South Orlando)...walk in, boom - loaner car. If I go to Gainesville Mercedes...well, they will get into a fender bender in my car, try to hide it, claim they found some other issue and need to wait for a part (while the car is in paint)...and never, not ever give a loaner unless you have purchased a +$100k car in the past 18 months.

 

Agree ​​​​​with injector tick is definitely notmal, rattle is not.

 

Ticking noise is not normal. Had similar noise on a 222. Complained to MBUSA and was told this was a normal noise. I responed, that's BS. The term 'normal' noise is an oxymoron especially in a $150K piece of luxury equipment. I persisted and S/A found a solution in a dealer only problication, something called Xentry. Simple fix, reroute lines and poof, ticking gone.

 

The issue is what is everybody describing as "ticking". A light ticking in any car with a high pressure fuel system is totally normal, but if its a louder ticking you're hearing inside the car etc thats not normal.