SkitsversuS

Whats up guys, I understand this is probably the most controversial topic and people are going to have their own opinions but I figured I'd ask anyway.

I ordered a 2018 c43 AMG coupe and expect to take delivery sometime in august/september. Since this car will be fresh off the truck, never driven AND I will be owning this car I want to make sure I break this engine in as efficient as possible.

As far as Mercedes goes as well as many other manufacturers, there's a list of things to do in the manual to follow to break-in a new engine that we're all familiar with. Then there's the whole "drive it hard" method due to seating rings correctly and what not, and with how well these engines are built now apparently there's a small window to do this properly "some say only about 20-40 miles".

What method did you guys use and how has it worked out for you. Again I understand people will have their own belief's towards this topic but I'm interested to hear them.

tmoneyC450amg

Drove it through all the ranges up to 85mph and 4-5k rpm. Tried not to go over either one of those numbers. But drove it in Sports+ and pretty spirited, again, took my gas off the pedal whenever I exceed either of those two readings.

NYCSoiL

C43 does not require a break in. read manual

coladin

It actually does need a break-in if you read the manual. First 1000kms no redline, I believe, and obviously make sure the brakes are treated with care, barring an obvious emergency situation.

sean1.8t

This.

Only full blooded hand-built AMG motors require break in. Assembly line motors are broken in on an engine dyno before installation


That being said.... I assume that they only run it in to the equivalent of 100km to, as you said, seat the rings. So I'd still take it easy on it. Take it up to redline sure, but don't make a habit out of it for the first few hundred miles. And don't do much freeway cruising either. Beat on it, but vary those RPMs.

NYCSoiL

You read a C63 manual.

munis

I think they all share the same manual. C43 is required to be driven in Program E for the first 1500kms with varying RPM and never go above 4k.

coladin

Yeah, no. Page 135 is quite clear and for those who know how you can read your manual from the car screen pressing the car icon beside the hazard button.

I broke in my C63s and this is no different...but to each their own

likerage

Just read the god damned manual. Why does this always come up? The engineers that made the vehicle know better than any ******* on the internet does. Just do what they say.

Dthquazi

No brake-in.

A break-in.... Maybe

Biggreenogg

Or maybe a break-in for the brakes

NYCSoiL

Dont confuse a real AMG car with handcrafted engine that require a break in and AMG enhanced car with a robot assembled engine. Just stop this BS, any reference to the AMG in the manual does NOT apply to C43. Also, our "AMG" C43 doesn't require a "1800 Mileage Replacement of Rear Differential Fluid or Rear Axle Oil", because it's not an AMG car. F**k, every noob starts the same thread instead of searching the forum.

coladin

I get what you are saying, and like I said I had two W204 AMGs, but if you think that you can get into ANY new car and drive it like you stole it, well, that isn't going to be in anyone's manual . Whether the engine is handcrafted or not, doesn't really change the message. To your point, the rear diff fluid is not handbuilt or handcrafted either, but is part of the RWD chassis requirements.

arkadnik

Bueller178

I hope they never put a silly Robot made engine in a C63 for example because it would radically change the car


PS, do you think the C63 differential services differences are because it's a limited slip RWD diff vs and open 4wd diff setup?

Biggreenogg

Nope. I think it is due to robot differences

Godric1600

SkitsversuS

Haha I know dude, I think I'm gonna follow the guidelines as I am buying this car, but I will be tempted to drive it like a nut everyday.

ShazV6

That's the thing, if you plan on buying this car and feel much safer breaking it in then by all means do so. If it is a lease (like mine) then i wouldn't give a **** honestly lol. Wont be my problem after 4 years and everything is covered under warranty till then.

Biggreenogg

Another reason not to buy a used AMG that was leased.

coladin

Although I don't want to be inconvenienced with extra service calls on my leased car either...

Bueller178

I suggest asking this question over in the C63 forum. Make sure the title exactly as posted herein.

SkitsversuS

Even know I'm buying it doesn't mean "ok just do what the dealer says, or the sticker says". Why it's confusing is there's so many people that actually say even know it's ran at the plant, you still should drive it hard to seat the rings etc. There's never any real proof at all between the easy and hard break-in. You have the engineers telling the dealer to break it in easy (prob for lawsuit reasons), and mechanics that build engines and rebuild saying something totally different with how well the technology and machining is now in days. Touchy subject amoungst people lol.

ShazV6

Yup its an "AMG", right? Should be able to handle the abuse if MB is going to associate the car as an AMG product.

OC6.3AMG

Can't believe the number of morons who post here.

-Let engine warm up before letting rpm go over 3000
-Don't let rpm go over 4500 for the first 1,000 miles.
-Don't down shift to brake and slow the car down.
-Don't go over 85 mph in the first 1,000 miles.
-Don't do the entire 1,000 miles in highway driving, you would want different engine speeds.
-If you have the AMG exhaust, enjoy it from day one.
-Turn off the stop/start every time you get into the car (that sh*t's annoying)

Don't let all the stupid "it's not an AMG" comments get to you. I've owned few AMGs so far and currently own a C204 C63 and a W205 C43 and I can tell you that the C43 feels more AMG than previous gen E63/CLS63 and C55/C32/Orig C43.

The 205 C43 is engineered by AMG and is a great car.