Power Output ML550 M278 Engine 300Kw & 320Kw
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From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
Power Output ML550 M278 Engine 300Kw & 320Kw
I've seen engine outputs for the 4.7Ltr twin turbo engine at 300kw (402 hp and 443 Ib ft) and then an upgraded number at 320Kw and 700Nm (429 hp and 516 Ib ft). Does anyone know if the engines are in fact different and what the difference is? I've read that 300kw specification is in fact MB under quoting the output in earlier models and they're all 320Kw.
All responses appreciatted.
All responses appreciatted.
Last edited by BlackML550; Aug 29, 2022 at 05:29 AM.
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2008 E350, 2012 ML350, 2014 E350, 2015 ML350
That is from the Wikipedia link for the M278 https://en.wikipedia.org/wiki/Mercedes-Benz_M278_engine
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Joined: Jan 2013
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2013 ML550 US spec. Air+Offroad pkg
The early ML550s were the lower rating and about 2014/2015 they increased rating. My dealer told me that they were exactly the same, and MB under-rated the engine intentionally in early models. Was all marketing. Only needed 402HP to compete, but when the revised competition (Mostly BMW X5) bumped theirs up mid cycle, which MB knew was coming, they could immediately bump their number up to compete.
MBWorld Fanatic!
Joined: May 2021
Posts: 2,524
Likes: 2,041
From: US
2008 E350, 2012 ML350, 2014 E350, 2015 ML350
The early ML550s were the lower rating and about 2014/2015 they increased rating. My dealer told me that they were exactly the same, and MB under-rated the engine intentionally in early models. Was all marketing. Only needed 402HP to compete, but when the revised competition (Mostly BMW X5) bumped theirs up mid cycle, which MB knew was coming, they could immediately bump their number up to compete.
Therefore, the rating of the engine can only be assured after an independent test on a dyno, anything else is smoke and mirrors.
Last edited by JCM_MB; Aug 30, 2022 at 01:51 PM.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2014
Posts: 1,085
Likes: 442
From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
The early ML550s were the lower rating and about 2014/2015 they increased rating. My dealer told me that they were exactly the same, and MB under-rated the engine intentionally in early models. Was all marketing. Only needed 402HP to compete, but when the revised competition (Mostly BMW X5) bumped theirs up mid cycle, which MB knew was coming, they could immediately bump their number up to compete.
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Joined: Feb 2014
Posts: 97
Likes: 18
From: Canada
2014 ML550 AMG package
When renntec put the ML550 on the Dyno for tune development they stated it was actually 448hp and not the 429hp that Mercedes claimed. They said Mercedes underrated the power in the marketing. It’s on their website. Their stage 1 tune brings it to 540hp.
https://www.renntechmercedes.com/ind...-ml-550-detail
https://www.renntechmercedes.com/ind...-ml-550-detail
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From: US
2008 E350, 2012 ML350, 2014 E350, 2015 ML350
I wonder if the experimental error is below 5%; otherwise, 429 = 448. It makes no difference. For a difference of 20%, I will take the results at face value. Of course with error bars
It just placebo effect, and feel good results
It just placebo effect, and feel good results
