Break-in Period
Thread Starter
Junior Member
Joined: Jan 2020
Posts: 15
Likes: 2
GLC 43 Coupe
Break-in Period
I’m expecting delivery of my ‘20 GLC 43 at the end of February. Do these engines require a break-in period, limiting speeds etc? I’ve seen contradictory information about whether this is needed, Thanks very much.
Member
Joined: Mar 2019
Posts: 222
Likes: 22
From: Montreal
GLC63 AMG S Coupe
Have look at this post on break-in period:
https://mbworld.org/forums/glc43-glc...ak-period.html
https://mbworld.org/forums/glc43-glc...ak-period.html
Super Member
Joined: Feb 2017
Posts: 703
Likes: 136
From: Northeast, USA
GLC43, GTI, X3, Mazda3
Yes, it will be in the manual. Basically, for the first 1000 miles: NO full-load on the engine and NO kickdown. Stay below 4500rpms. Max vehicle speed of 85mph. After 1000 miles: slowly increase load on engine.
Senior Member
Joined: May 2019
Posts: 283
Likes: 108
2020 GLC43 | 2020 GLE350 | 2014 E350 (sold)
There’s debate on how closely to follow the break in guidelines. For example, some forum users believe that the engine can be pushed a bit during break in as long as it’s properly warmed up. Thankfully, the digital gauges make it very easy to tell when the engine and transmission are up to temp.
Also, Comfort driving mode is recommended for the break in.
Also, Comfort driving mode is recommended for the break in.
Member
Joined: Jan 2019
Posts: 222
Likes: 39
GLC43 SUV
There’s debate on how closely to follow the break in guidelines. For example, some forum users believe that the engine can be pushed a bit during break in as long as it’s properly warmed up. Thankfully, the digital gauges make it very easy to tell when the engine and transmission are up to temp.
Also, Comfort driving mode is recommended for the break in.
Also, Comfort driving mode is recommended for the break in.
I always breakin a motor for 1k miles. For me, this means going easy with rare pressuring it. Also, no cruise control to avoid a constant rpm. I’ll go up to ~3.5kRPM whatever speed that buys me but not cruising constantly a static RPM.
oil changes 5k miles.
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Super Member
Joined: Feb 2017
Posts: 703
Likes: 136
From: Northeast, USA
GLC43, GTI, X3, Mazda3
That is correct by MB standards, but some like to do earlier changes. Many theories on why earlier or just can make one sleep easier, but it's their money. Could be some truth/fact to doing earlier, but an oil analysis would come into play to be sure. Not knocking earlier changes/maintenance, as I've done it too.
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Senior Member
Joined: Nov 2018
Posts: 338
Likes: 73
GLC 63 AMG, Trackhawk, X3M
I’ve taken the car to the drags the first couple 100 miles. Tuned at 1000 miles and turbos upgraded at 2500 miles. Car is built much more tough than the bmw and Audi’s. Enjoy the car and don’t think about the hoax of break in periods
get those gaskets sealed and drive the damn thing like you stole it. Either way it’s getting traded in to the dealer and it’s the next guys problem
get those gaskets sealed and drive the damn thing like you stole it. Either way it’s getting traded in to the dealer and it’s the next guys problem
Super Member
Joined: Aug 2019
Posts: 881
Likes: 300
AMG GLC 63s Coupe
I always break mine in like I am going to get rid of it in 1.5 years since I always do....
All kidding aside, just don't be crazy and don't let it idle for much time and vary the RPMs(no cruise control) and it will be fine. Punching it here and there will not hurt anything.
All kidding aside, just don't be crazy and don't let it idle for much time and vary the RPMs(no cruise control) and it will be fine. Punching it here and there will not hurt anything.
