Recently Purchased a 2014 C63 Amg coupe with 106,000 miles.

The car has a huge lack of power. It sounds aggressive but acceleration is not there, more similar to a regular c300. When I first purchased the vehicle it had an engine light but everything seemed fine. I drove it home and at highway speeds the engine light started to flash and the high rpms felt like the engine was shaking all over the place. I pulled over, let it cool down and had no issues besides the sluggish power driving back.

Anyways codes:
P0300
P228f
P0306
P2187
P0171

​​​​Current solutions i am thinking:
Replace all 4 O2 sensors
​​​​​Replace all spark plugsReplace intake manifold gasketReplace crankcase vent valveReplace purge valveLiqui Moly lifter
Oil changeFilter changeLiqui Moly Cerakote & anti friction treatment Does this list seem reasonable or am I doing to much/little?

 

I really can't help with advice but the boys in the w204 forum might be able to. Try reposting there, this is the w205 section for 2015+.

 

you are throwing lean codes and misfires in multiple cyl. I would figure out your fuel system issue and do not push the car hard as you risk your engine. Start by checking fuel rail pressure. You may have a failing fuel pump. Spark plugs never hurt if you haven’t changed them in a while. You are running lean and misfiring. That Is not safe.

 

+ 1
…and you bought a car with CEL on and hoped for the best?

“ When I first purchased the vehicle it had an engine light but everything seemed fine”

 

*****Sounds like a great way to blow up an engine. Never run an engine hard with a CEL code on, especially lean codes. You can have a really bad and very expensive day doing so.