Redline is bad for our cars?
Thread Starter
Super Member
Joined: Jul 2012
Posts: 737
Likes: 60
From: HESPERIA CA
2011 E550
Redline is bad for our cars?
Hey guys, so I was over at the c63 forum, just
snooping around and I found a thread about how
redlining a C63 is bad. I was thinking, those guys have a handbuilt 6.2 liter v8 and if they are saying that redlining their own engine is bad, what hope does my 5.5 liter non AMG engine have? I drive my E550 to redline like once a month, just to hear the big girl sing, but reading that thread has really made me think twice about redlining. What's your guys opinion on redlining our cars? Love to hear your input!
snooping around and I found a thread about how
redlining a C63 is bad. I was thinking, those guys have a handbuilt 6.2 liter v8 and if they are saying that redlining their own engine is bad, what hope does my 5.5 liter non AMG engine have? I drive my E550 to redline like once a month, just to hear the big girl sing, but reading that thread has really made me think twice about redlining. What's your guys opinion on redlining our cars? Love to hear your input!
MBWorld Fanatic!
Joined: Mar 2014
Posts: 3,107
Likes: 394
From: West Central Florida
2011 E550 P2 4M Sedan
It doesn't hurt if you are having fun while doing it.
Seriously, the tranny shifts up to protect the engine. Just don't hold it in gear at high rpm for no reason. Did this other thread share any insight into why it was bad?
Seriously, the tranny shifts up to protect the engine. Just don't hold it in gear at high rpm for no reason. Did this other thread share any insight into why it was bad?
Super Member
Joined: Jun 2011
Posts: 576
Likes: 8
From: Placitas, NM
E550
Ah! Just need to stretch those con rods, huh? 
There is just so much quiet power in a 2011 E550, I can't think of a reason I would want to red-line it. You might pick up an extra 0.1 sec in a 0 to 60 --- for what purpose?
There is just so much quiet power in a 2011 E550, I can't think of a reason I would want to red-line it. You might pick up an extra 0.1 sec in a 0 to 60 --- for what purpose?
Senior Member
Joined: Nov 2011
Posts: 308
Likes: 22
From: Houston TX
2015 E400
I just came back from 2 day Corvette performance racing school at Spring Mountain 3 wks ago. Instructors there stated that they push their 80 - 100 Corvette fleet near redline everyday for a couple yrs & today's engines are bulletproof. If GM can produce durable engines, I'm sure Mercedes engines can handle a few redline events once in a while...
Just make sure you change the oil on schedule.
Just make sure you change the oil on schedule.
Super Member
Joined: Nov 2013
Posts: 991
Likes: 86
From: Washington DC area
Mine: 2014 E550 4matic; Hers: 2016 CLS 400 4matic
I don't think it is a problem at all. I never heard of anyone having problems with a Mercedes V8 - only exception being a friend in Germany - he killed the V8 in his 420 SEL in the 80s. My dad had a 500 SL at that time and he never babied it - ran it full out on the autobahn...no problem at all. I lay into it once in a while - hard to get into it too much without reaching triple digits.
Member
Joined: Jan 2015
Posts: 85
Likes: 15
2019 Mercedes-Benz GLS
As long as the engine is at normal operating temp, you should be fine. Redlining a cold engine is bad.
These cars were built to be driven on autobahn speeds for long periods. Just enjoy doing it!!
These cars were built to be driven on autobahn speeds for long periods. Just enjoy doing it!!
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Member
Joined: Oct 2014
Posts: 182
Likes: 2
e550
I would think how the engine was broken in and regularly driven would play a big role. If it had never been driven hard over a long period of time you could expand the connecting rods out a bit and cause the pistons to reach up into the cylinders and hit bits of cylinder wall deposits.
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