2024 AMG oil

[scrllock]

As I understand it, this motor is used in a lot of high performance vehicles and is touted as quite reliable. I am surprised at my issues.

The consumer reputation is that it's pretty reliable. Less so if you ask a Mercedes tech. Personally I doubt there are any truly reliably twin turbo V8s, especially in a "Hot V" config (turbos/downpipes in the valley of the engine).

It's hard to believe this is anything but a manufacturing issue if OP's story is true.

 

[97prizm]

Hello all. bought a 2024 Merc Benz AMG GLE 63s last year. Twin-turbocharged 4.0-liter V8 (M177). At 2500 miles, it developed a bearing knock and after many weeks at the dealership (tearing the motor down), MB replaced the vehicle. At 3000 miles, this motor is having same knock!!! I have not even addressed it yet with the dealership, other than an early oil change at 6,000 miles. I had them save a sample for me to get analyzed.

I am concerned that the oil is too thin. The knock is only appearing once it gets warm and only at idle. It does not get worse when increasing throttle. In fact, it goes away. My question is what should I be focusing on the oil analysis and should I spend extra $$ for additional viscosity tests? What test and from who might you recommend?

BTW... yes, both vehicles were totally babied during break-in. I was very careful not to exceed recommendations that are posting in view on a sticker in the windshield and addressed several places in the manual.

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I would do some sleuthing on some Mercedes Benz boards, especially if they have an AMG section. This may point to a QC or parts issue.

 

[loneryder]

Yes, you don't want to see those kinds of marks on bearings at any time, but especially not from a new engine. That's a problem with the design, the manufacturing process, assembly, or a combination thereof.

Those engines are hand assembled by one man. You would think he would have noticed that if the bearings were like that before assembly. My vote is on not properly hardened bearings.

 

[GW.]

Did the dealer provide a diagnosis?

A pic of the repair order would be helpful.

 

[02SE]

Those engines are hand assembled by one man. You would think he would have noticed that if the bearings were like that before assembly. My vote is on not properly hardened bearings.

Bad bearings would be part of the manufacturing process I mentioned.

 

[wemay]

Get it fixed or replaced then trade it in for something else. Whether the new engine (3rd) is reliable or not, the little voice in the back of your head will be gnawing at you with every sound.

 

[FranklinJL]

I've owned several AMGs with the M177.....never seen this issue. The block is good for 900-1000hp......Ive seen 930 on stock bearings.....100% supplier issue....

They should give you an extended warranty on the work......if not sell it to carmax lol. Private party I'd be interested as I've been looking for a GLE63 project car anyway.....

 

[FranklinJL]

As I understand it, this motor is used in a lot of high performance vehicles and is touted as quite reliable. I am surprised at my issues.

Its super reliable.....Ive seen several for 100k no issues....tuned cars also

 

[burbguy82]

Its super reliable.....Ive seen several for 100k no issues....tuned cars also

We have a different definition of reliable.

And I thought MB and especially AMG was the hottest thing since sliced bread. Two in a row, WOW.

I find it very interesting that all he manufactures are having issues with metal. Chinese steel? Sabotage from within?

 

[edyvw]

We have a different definition of reliable.

And I thought MB and especially AMG was the hottest thing since sliced bread. Two in a row, WOW.

I find it very interesting that all he manufactures are having issues with metal. Chinese steel? Sabotage from within?

Tell us what is your definition of reliable?

 

[Scott Baer]

Did the dealer provide a diagnosis?

A pic of the repair order would be helpful.

No. everything was performed as per the direction of the Mercedes rep and the Mercedes engineers. I did not get a repair order. perhaps because the car was not "mine" by the end of the process. I never took it back once it was taken to the dealership. they ended up replacing the motor which was $100k and sold it to someone.

 

[Scott Baer]

Tell us what is your definition of reliable?

Layman definition. I base it simply on the fact that they have been using if for decades in many "performance" cars.

Sorry, I thought you were asking me. I don’t really know. It’s just what I heard.

 

[Scott Baer]

Just had it out running, after oil change… nice and hot. Parked it in idle. No more knock… for now.

 

[slo town]

they ended up replacing the motor which was $100k and sold it to someone.

A $100K motor in a non-exotic street vehicle? The reality is, as nice as modern car are, they are ridiculously complex and many are just one relatively minor problem from becoming a rolling chassis.

Scott

 

[edyvw]

Just had it out running, after oil change… nice and hot. Parked it in idle. No more knock… for now.

What oil did you use?

 

[Scott Baer]

What oil did you use?

Genuine MB 5w-40. Dealership did it.

 

[loneryder]

Its super reliable.....Ive seen several for 100k no issues....tuned cars also

Reliable if you change the oil every 5k miles with approved oil and fix oil leaks if they occur.

 

[burbguy82]

Tell us what is your definition of reliable?

Who is "us". I only see you asking me this question.

Well, context clues are key here.

The other poster said it was "super reliable", and 100k miles (seemingly before a major repair was needed) as meeting their requirements of "super reliable". I disagree. 100k miles per engine rebuild, for a street car is not super reliable...... an average of 250-300k per engine without major repair would be "super" for me.

 

[edyvw]

Who is "us". I only see you asking me this question.

Well, context clues are key here.

The other poster said it was "super reliable", and 100k miles (seemingly before a major repair was needed) as meeting their requirements of "super reliable". I disagree. 100k miles per engine rebuild, for a street car is not super reliable...... an average of 250-300k per engine without major repair would be "super" for me.

Did he mention engine rebuild? No.
So what is reliable? Which car with twin turbo hot V set up comes to your mind here when it comes to comparing reliability?
Or is this: “i know you want Porsche 911, but have you think of Honda Accord? Fun, and CVT is not that bad.”

 

[kschachn]

No. everything was performed as per the direction of the Mercedes rep and the Mercedes engineers. I did not get a repair order. perhaps because the car was not "mine" by the end of the process. I never took it back once it was taken to the dealership. they ended up replacing the motor which was $100k and sold it to someone.

The plot thickens. No record of anything, huh?