siegrisd

Hi, everyone.

I'm looking at a 2007 CLS63 with 84k on it in the Denver area. It's in superb shape cosmetically and drives very, very well. Being new to the M156, I do have a couple of questions about it. I have an ML500 with the M113 in it and have close to 200k on it. The M113 has been utterly flawless and is very quiet and very, very smooth even at cold startup. When I started up this CLS from cold this morning, it was noisier and more rough-running than I expected. It has excellent power and once warmed up, it smoothed out nicely. Is this normal?

In the Carfax, I was surprised to see that this car has been to the dealer several times relatively early in its history for major engine work. The first indication of oddness was at about 23k with new valve cover gaskets - no big deal. Then at 30k was back again, for lifters and cams. Then again, for head gaskets and then it indicated that piston(s) (YIKES!!!) were replaced. Then at 43k the lower end was redone and the rings were done.

Um... this seems like a LOT to do on an engine that has as good a reputation as the M156 seems to. The flywheel has been replaced at about 56k as well. Here's the VIN, if it helps.

WDDDJ77X87A099431

I'd honestly be all over this car, but, the early history of major work does have me a little spooked. Let me know what you think.

Thank you all for your help. (Cross-posting to E63 forum, too)

oneslow55

that shake and loud is normal on cold starts.i would sty away from the 156 types look for a m113k supercharged on there beasts

oneslow55

[QUOTE=oneslow55;7588141]

That shake and loud is normal on cold starts.i would stay away from the 156 types look for a m113k supercharged on there beasts.

siegrisd

I've thought a little about that, too. There's a 2006 CLS55 for sale in my area, but, SBC issues seem like they might be a concern. Your thoughts from that view?

oneslow55

FunkTron

What he said!....kinda. ABC (suspension) is not on a cls55.....SBC (brakes) is and covered for 25 years
55 is full beast mode

oneslow55

wrote sbc but iPhone corrected to abc

CharlyE500

I think CLS55 is way to go or M113K engine. I have owned my CLS55 for 3 years only did oil change so far. Soon need to change my rear tires...
As other mentioned SBC is cover by 25 years. I have received Mercedes letter for my E55 and CLS55. Heck, I spent $1K 9 months ago in SBC on my E55 with my indy shop.
I have my 06 E55 for 10 years now and will keep for other 5 years to come. Only major issue was water pump and IC pump $600. M113K is much more reliable and easy to mod.
Plus better MPG compare to 6.2L