Here’s Why The 6.2-Liter AMG V8 Was The Least Reliable AMG Engine Ever Built & Is Now A Total Legend

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Published 2019-04-06

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I've done a video on the most reliable Mercedes AMG Car ever built, I've made one on the best turbo diesel Mercedes ever made and I've made a few on factory defects. This is the story of the least reliable AMG ever made, the M156 6.3 Liter V8. The first engine built from the ground up by AMG didn't exactly pan out in the reliability department and in this video, I'm going to prove it to you. Enjoy and stay to the end to find out why I just bought a car with this ticking time bomb and why I think the M156 is still a total legend.

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All Comments (21)

@LegitStreetCars 5 years ago

Take a guess at my new M156 equipped car. A little hint, it's white on black.
@user-gm2dq2lt8w 5 months ago

I have 15 friends who own the m156 AMG cars with this engine. No problems at all like what you are describing here. Me personally, I have a 2008 CLS 63 AMG 6.3 . Absolutely awesome car with absolutely no problems. The secret: Regular oil Changes, Every 5 years, replace Spark Plugs and Wires and Coil Packs. No bolt problems. Awesome Vehicle. Totally reliable and great at High Speed . I converted this car to 650 HP Naturally Aspirated. 0 to 60 in 2.79 seconds and the 1/4 mile in 10.179 seconds at a speed of 132.658 mph
@AutoAuctionRebuilds 3 years ago

After watching this, I am very proud of my $6K S63 with 175K miles. Old video, still helping guys like me today! Happy New Year!
@Nick-bb7bx 2 years ago

These issues are easy repairs that don’t just present themselves out of no where leaving you on the side of the road. It’s a 6.2L engine that is capable of over 500hp in 2007
@OnDUBzProductions 5 years ago

this channel is a wealth of knowledge to Mercedes owners or future owners, keep up the quality work Alex! thanks
@scryla2000 5 years ago

Omg thank you for this video!!!!! Mine is an 07 w211 E63 with 126,000 miles. I have had none of these problems but they guy I bought it from kept meticulous maintenance records and kept it dealer maintained from new. I know how lucky I am with all of the problems this engine has.
@stefanocapponi1917 5 years ago

I own one of these and have to say had a couples of issues mentioned. I also think that a 500 hp engine on a sedan is a lot. It’s supercar level power so you need to be prepared to spend a lot of money in preventive maintenance. My car has almost 50kmiles and puts a smile on my face every day. That comes at a cost. If you are worried get an extended warranty.
@TheKasperlkopf 5 years ago

Wonderful video alex! Very well researched and interesting af! Please make more videos like this one
@biaritzsiroko6117 5 years ago

REally happy to see this video and finally know the ins and out of this engine!
@chrisridebike8 5 years ago

Great video. Former C63 owner here. Had the headbolts, lifters, and injectors replaced preventatively. I’d also recommend the plastic idler pulleys get replaced with some type of billet pulleys.
@EaseLdk 5 years ago

Pump those m156 videos out so we can start preventative maintenance from home plz!
@Czechbound 5 years ago

This is a GREAT idea for a video series ! Another GREAT video !!
@timdurham8989 2 years ago

Great vid Alex! I just got done watching a tear down of a failed one of these. It showed so many things you talked about. Thank you!!
@ptzish 5 years ago

This was one of my favorite videos so far. I really appreciate insight into the real life issues with these cars. There aren't many people doing what you do. Thank you!
@U--Bravo 4 years ago

Absolutely great content, I love learning more about these things, and you truly are great at teaching, thank you. Subscribed also props to throwing shade at BMW
@ryanmccormick2150 5 years ago

Interesting video Alex , I'm getting my E320 CDI in the next couple of months and I can't wait buddy 😁😃👍
@integrafreak1 5 years ago

aaaand even after all of this, I STILL WANT IT
@H.S.H.M. 5 years ago

Love this video...am so glad you actually went in depth & covered all these known issues with the M156, there are lots of misinformed car "youtubers" out there giving out false information saying this engine has absolutely no issues. I'm on my 2nd C63, my '09 with only 40k miles had lots of problems. My 2013 with 60k miles has noisy lifters constantly though I love the car for everything you've mentioned in the end.
@bearsgarage272 5 years ago

M113 for the win! Mine still runs smooth after 220k miles
@ramiromendoza2903 4 years ago

Great video love the informative information you provide