M271 Evo engine
Thread Starter
Junior Member
Joined: Jun 2017
Posts: 55
Likes: 1
95 c36
M271 Evo engine
So some of you know my C250 engine blew up the other day.
so why is the M271 engine such a failure, all you hear is bad things.Is it the design or just bad quality???
so why is the M271 engine such a failure, all you hear is bad things.Is it the design or just bad quality???
Last edited by Kdc36; May 30, 2019 at 03:05 PM.
Member
Joined: Nov 2010
Posts: 121
Likes: 28
From: Upstate NY
2013 C250 SPORT, 2014 WRX STI SEDAN, 2017 E300 4MATIC
I disagree with your premise that it is a bad engine. I think like everything else there is some defective units and some good units. From your other thread the car warned you - rattling noise, if you had had it checked at that point the chain could have been replaced before the engine failed. That being said there is no reason that a properly maintained car should be having a stretched/broken chain at your mileage.
Thread Starter
Junior Member
Joined: Jun 2017
Posts: 55
Likes: 1
95 c36
I disagree with your premise that it is a bad engine. I think like everything else there is some defective units and some good units. From your other thread the car warned you - rattling noise, if you had had it checked at that point the chain could have been replaced before the engine failed. That being said there is no reason that a properly maintained car should be having a stretched/broken chain at your mileage.
Last edited by Kdc36; May 30, 2019 at 08:18 PM.
MBWorld Fanatic!
Joined: Oct 2004
Posts: 1,305
Likes: 37
From: Las Vegas, Nevada
2013 C350 Coupe, 2005 C230K Kleemann Sedan, 2013 GLK350 4matic
My M271 in my 2005 C230 is still going strong at 148000 miles, with original timing chain. I’ve used Mobil 1 0W40 since new.
Junior Member
Joined: Apr 2018
Posts: 22
Likes: 8
From: Canberra, Australia
2010 c250 cgi, 2001 Porsche Boxster S
In my view replacement of the timing chain and tensioner should be a service item with a similar interval to a timing belt.
The M271 chain is a single chain which is prone to wear (stretching) before other parts of the engine wear.
The tensioner can also be problematic. Similar designs have been known to cause engine failure in VW/Audi products.
At any sign of rattling at start up, immediate action should be to have both items replaced. This is reasonably easy to do as a new chain can be pulled through by the old one; full teardown isn't needed. The tensioner is accessible from outside the engine.
The M271 chain is a single chain which is prone to wear (stretching) before other parts of the engine wear.
The tensioner can also be problematic. Similar designs have been known to cause engine failure in VW/Audi products.
At any sign of rattling at start up, immediate action should be to have both items replaced. This is reasonably easy to do as a new chain can be pulled through by the old one; full teardown isn't needed. The tensioner is accessible from outside the engine.
Trending Topics
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
