• Class action suit against Daimler AG / Mercedes due to M156 V8 (63 AMG) engine defects

      A class action suit is being brought against Mercedes / Daimler AG due to alleged defects in the M156 V8 motor. The suit states that these defects are due to premature wear. The premature wear taking place as a result of the material used in the camshafts. The camshafts used are made of cast nodular iron. The valve lifters used however are made of 9310 grade steel. In the official complaint it is stated that the combination of these metals as designed is contributing to premature wear of the M156 motors. This can be due to improper heat treating of the metals or improper offset. The main sticking point is that Mercedes and AMG have known about this since 2007 when service bulletin S-B 05.20/20b was released. We will keep you updated on the details as this goes forward.



































      This article was originally published in forum thread: Class action suit against Daimler AG / Mercedes due to M156 V8 (63 AMG) engine defects started by Sticky View original post
      Comments 842 Comments
      1. M3_WC's Avatar
        M3_WC -
        Never even heard of an engine failure on a 63 AMG car.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by M3_WC Click here to enlarge
        Never even heard of an engine failure on a 63 AMG car.
        I have.
      1. Ryan Mills's Avatar
        Ryan Mills -
        Blame it on the oil Mercedes! There should be no metal to metal contact, right? It MUST that, or the fact that those foolish customers are not following the oil change intervals like they should. Click here to enlarge
      1. M3_WC's Avatar
        M3_WC -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I have.
        100% stock cars?
      1. M3_WC's Avatar
        M3_WC -
        Kinda skimmed through the document.

        Does is say why the original repairs were not covered under warranty?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by M3_WC Click here to enlarge
        100% stock cars?
        Some, yes.
      1. Yomama69's Avatar
        Yomama69 -
        I have as well. The Complaint sets out the engine defect. Complete failures will be at higher mileage. AMG cars will typically have less mileage though. It's not about the complete failure, it's about Mercedes knowingly not issuing a recall on defective parts so they either deny warranty repairs or wait for the failure to come about after the warranty period when the warranty explicitly states they will replace parts.
      1. Sticky's Avatar
        Sticky -
        People on MBworld are amusing:

        Click here to enlarge Originally Posted by Gblansten Click here to enlarge
        There is nothing wrong with the M156 motor.
        Ok expert Click here to enlarge This law firm apparently has nothing better to do.
      1. Yomama69's Avatar
        Yomama69 -
        Did that hit mbworld already? I don't go on there. Link? That guy doesn't even know that his engine is wearing prematurely.
      1. Yomama69's Avatar
        Yomama69 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        People on MBworld are amusing:



        Ok expert Click here to enlarge This law firm apparently has nothing better to do.
        Not just one law firm. It appears to be 3 of them. One is probably just local counsel in New Jersey since the other 2 are out of state. It's probably not a coincidence, but the other 2 are the same firms and attorneys that sued BMW for the HPFP defect in the N54.
      1. Sincity's Avatar
        Sincity -
        Subscribed. I wonder how Jim's cams and lifters looked before the Weistec head job?
      1. Yomama69's Avatar
        Yomama69 -
        Click here to enlarge Originally Posted by Sincity Click here to enlarge
        Subscribed. I wonder how Jim's cams and lifters looked before the Weistec head job?
        Paging Jim. I wonder if he even saw them personally. I bet Andy@MHP has some input.
      1. M3_WC's Avatar
        M3_WC -
        Click here to enlarge Originally Posted by Yomama69 Click here to enlarge
        I have as well. The Complaint sets out the engine defect. Complete failures will be at higher mileage. AMG cars will typically have less mileage though. It's not about the complete failure, it's about Mercedes knowingly not issuing a recall on defective parts so they either deny warranty repairs or wait for the failure to come about after the warranty period when the warranty explicitly states they will replace parts.
        How are they denying warranty repairs? They have to have a reason.

        I still don't get why this owner had to pay out of pocket for the original repairs.
      1. Yomama69's Avatar
        Yomama69 -
        Click here to enlarge Originally Posted by M3_WC Click here to enlarge
        How are they denying warranty repairs? They have to have a reason.

        I still don't get why this owner had to pay out of pocket for the original repairs.
        You must be new to auto enthusiast forums. Let me be the first to welcome you.
      1. M3_WC's Avatar
        M3_WC -
        Click here to enlarge Originally Posted by Yomama69 Click here to enlarge
        You must be new to auto enthusiast forums. Let me be the first to welcome you.
        Funny.

        Are there any examples of why they are not covering some of these repairs?
      1. Yomama69's Avatar
        Yomama69 -
        On mbw there are. They usually blame wrong oil, even though the oil is usually changed at the dealer.

        There's also a couple posts about complete engine replacement.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Yomama69 Click here to enlarge
        Did that hit mbworld already? I don't go on there. Link? That guy doesn't even know that his engine is wearing prematurely.
        Someone put it up there, I wonder who?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Yomama69 Click here to enlarge
        Paging Jim. I wonder if he even saw them personally. I bet Andy@MHP has some input.
        Use the internal paging system, @JRCART
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Yomama69 Click here to enlarge
        They usually blame wrong oil, even though the oil is usually changed at the dealer.
        This makes no sense to me.
      1. M3_WC's Avatar
        M3_WC -
        Starting to think this guy either had some kind of modifications to the engine or wasn't taking his car in for regular service.

        There has to be a reason Benz would not cover his repairs under warranty.