Used MB CLS 2011 onwards what extras should I be looking for when buying?

[WantaMerc]

Hi guys

Looking to get myself a CLS 250 or 350 AMG Sport 2011 onwards.

Are there any optional extras to the car that I should look out for when looking for the right one?

Thanks.

 

[developer]

Dynamic seats are nice, with a gentle massage up and down the back and side bolsters that inflate as you corner.

Not a deal breaker, but just....nice.

Also, CLS's look better on a decent sized wheel, 18" or 19".