I have a 2011 c350 and it has AMG written into each tire rim, but I'm not sure if c300's and c350's can be AMG models.

RS4 has the best answer.

no a C350 cannot be an AMG, however you probably have the sport package version that includes the AMG style rims.

Only the C63 AMG is the true C class AMG, you have to have an insane 6.2 V8 engine, with amplified thunder noise coming from the exhaust everytime you revv high, high insurance, gas guzzler tax (I hate those).

RS4 is the better choice in my opinion.