midareff1

Don't exceed 85 mph and 4500 rpm aside...... did you leave it in C mode for the first 1000 miles? I'm trying to follow the Manual's recommendations and I can avoid stomping it but am dying to ditch 2nd gear starts and see what that is like..

Modio1234

I did the break-in in race mode with the manual shifting so It didn't automatically downshift and you could have a lot of fun up until 4500 rpm

ItalianJoe1

You're supposed to do it in Comfort for the learn-in of the powertrain characteristics. If you want to follow the procedure, do it in Comfort. If not, just drive the car and enjoy, it's not gonna hurt the car but it may be not as smooth.

right_mr

Depending on how cold it is out there where you are at the moment, and just how adventurous you would like to get, anything more than around an inch on the pedal in gear 1 from a dead stop may give you a consistent satisfying result ...wheelspin (if in cold climate). Feel free to try it out, the revs shouldnt really shoot up to 4k unless you get brutal with the pedal and with traction control off or sport handling mode. Personally i found traction control in regular mode would ruin any sort of sense of adventure by kicking in.

Still I get plenty of wheelspin even in 2nd gear starts so depends on whether you want to light the tyres up or just want to see what it is like.For me , the 1st gear starts were all about traction control ruining my funbut saving my tyres. Different story now that i'm out of the run-in phase, that said, i always go easy from a dead start and always push the tyres to their limits of grip and the challenge is not getting the wheels to spin wildly. There's just too much torque to smash down on that pedal. I even get 4th gear wheel spins sometimes as high as 60 to 70mph

Sanch

Mix of C and S+

I had instances where I got carried away.... I'm sure most faced a similar problem.

amalgam

I only made it to 600 miles. Was taking too long, tuning it this week at 900 miles

koifysh

Never follow proper break, went over 4k rpm a few times and drove in sport and sport + the whole time & at 900 miles I gave it full beans to 130 lol

lilmanvc15

MAN I JUST GOT MINE TOO AND ITS KILLLLING ME INSIDE!!! i am only at 350 miles for 1 week

lilmanvc15

I am going to attempt to leave it in C mode for the rest of the mileage till 1000 miles hits the car.

White C400

I know feels like it's taking forever have 400miles so fae

rroberts

Taking European delivery on the 17th and am going to have to force myself to not partake of the Autobahn. To get my "speed fix" I had planned to take an AMG GTR on the Nurburgring on my way to Stuttgart but the company no longer has the GTR so they are setting my up in a Lombo (for 20 Euro less - LOL).

Gle43e55ju

i was on and off the S+ nothing overly crazy for the break in... a little freeway run up to100 mph... just hit 1K miles giving it a little bit more gas.. tried smoking a little tire tonight but relaxed.. lol this is my DD by the way..

midareff1

My DD too. About 700 miles on it now and press it down about an inch and a half and it wants to spin em, and wifey yells "turbo". OTOH, she really likes it too even though I won't let her drive it (I've seen what she does to cars home in BKK) and is kinda fanatical about where I park it so it doesn't get door dinged.

Gle43e55ju

its the greatest when wifey loves the car as much as you do.... but i travel for a living so she sneaks it out when im gone.... lol

Rubpau

I put mine in comfort 97% of the time during break-in. The RPM raises too quick when i curiously switched to the S+. But i made it through my 1000 miles staying within parameters. That night i was 0.5 miles away from home and decided to take a 2 mile joyride to celebrate

right_mr

I've had the misfortune of having to run-in two AMGs now in around 18 months. Overall, such a frustrating experience. I think there is good news, as long as you dont do kick downs, it is fine to drive in sport or even sport plus with auto shifting. Can be run it in sport if you arent a fan of comfort mode. The vehicle computer does a great job during the run-in phase of shifting when it needs to. It's really well calibrated. And by trusting your right foot, that will be extra insurance that if you think the gear wont shift automatically, you can reduce your throttle input. or if you're concerned, you can just upshift manually using the paddle shifters even in auto mode. My experience was that until both vehicles hit roughly 850 miles , gears would always shift up at around 3k even with a bit of enthusiasm on the throttle paddle. From a dead stop, i cant see the car ever going anywhere very fast if i kick down as it's got too much power compared to rubber lol, there's so little grip especially on the saloon and wagon (the coupe has wider tyres). From the 850ish mileague landmark, the shifts started happening much closer to the 4k rev mark on both cars. I'd say , give it a try in sport mode, but watch out for moving off from a dead stop as it can get tricky for the vehicle to not go into wheelspin and traction control intervention unless your throttle foot is super sensitive. With a car with this much power, you'd have to be pushing it pretty hard for the wheels not to lose traction anyway and unless you're doing kickdowns, there's little chance that you'd hit 4.5k revs on the c63 particularly if you're in a colder/ wetter environment.

Jaydavid93

Im at 355 miles as of today and its literally killing me. This time I'm going to follow the instructions and leave it in C. I wish it was only 750 miles ugh.

White C400

yea I made it 300 miles drive it in s+ all the time now just don't hammer it and still don't go over 4500 and no manual downshifts

FDNewbie

I guess I'm the only one on here who really stuck to the proper break-in procedure the entire way? Of the top of my head...no heavy load, and no driving over 4500rpm or over 85mph for first 1,000 miles, then slowly increasing load for the next 1,000 miles.

midareff1

OP here: Almost 700 miles now and still in C. Have been to 4000 or 4200 maybe 3 or 4 times with the pedal maybe one inch down. ... wifey yells turbo and starts laughing. Very easy to break rears loose, it came on Michelin SS and I'm not predicting a long life for them.

White C400

I just don't see the point of keeping it in comfort only because the RPMs stay at a steady rate and also goes in to sail mode where you want to fluctuate the RPMs more often so being in Sport Plus and driving it the same way as comfort would make more sense for a better break in just push the pedal lightly and don't go over 4500 RPMs and u still get all the pops and crackles from the exhaust. The only thing I can think of is every so often you will get a little bit of a harsh down shift in s+ when slowing down not using the paddles at all either.

GordonGEICO

I feel like the break-in procedure is more about finding out if you have any from-the-factory faulty components and less about the engine or drive-train actually needing that break-in. A lot of times, something that is going to fail will fail sooner rather than later, and if you take the car to the track on the first day, what might've been a minor issue may turn into something significantly more serious.

Having said that, these cars have so much performance that even driving relatively spiritedly (compared to other cars) is probably what I would call "light duty." And I don't think momentarily exceeding 4500 rpm or 85 mph is an issue, even during break-in. Unless you're showing off, I don't think many people routinely drive around at or near red-line for sustained periods, so I say, just drive how you normally would.

midareff1

OP again: Tried Sport mode this afternoon at 700 miles. That first gear start is sooo much nicer IMHO, and so much better if you are doing a left through a break in a couple of lanes of traffic to a mall or parking lot. Having wrenched my way through a couple of years of college in my teen days 50+ years ago at a sports car garage, the break in period was to let rings, bearings and seals all seat in without undue strain. In those days you would put a little Castrol Linseed Racing Oil in your gas for the cool exhaust smell. That said, materials and assembly is so much better today I can't imagine 1K of miles is needed to seat those things in our cars. If anything, I would also suspect the ECU learning period is probably about over now, at least on my 700 mile old car, at this point. I'll probably give it a hundred or two in S, then S+, then let the games begin. The problem though, at least in the Greater Miami/Fort Lauderdale area is this thing gets going so fast so quick is where can you play.

JonAG72