Unfortunately there's no good way to make meaningful input with MB. You can go to the 'customer experience' website (or whatever it is called), and write an email. You will either get no reply back, or an email containing inane corporate speak. I emailed them a while back regarding part pricing on my 2008 CL. A door seal had increased in price from $168 to $7,000. This is not a one-off occasion--there are plenty of other parts that in a normal world would cost $200 or $500, but they are charging $15,000 for (like interior door panel). What happens is once a part becomes very low inventory (old car, stuff never to be made again), they jack up the prices to hostage release level. I emailed them and said as an owner of new and old MB, I find this distasteful to punish enthusiasts like me. The price of the door seal was obviously not rooted in reality in terms of what it costs to engineer/manufacture/distribute. The email back told me about how MB has the best parts in the world engineered by the greatest minds, and the prices reflect that. While they are not alone in giving such ridiculous answers, it is disappointing and dispiriting. Why punish those most excited about the brand who could be good ambassadors for the brand? There is no good answer other than they exist to extract the maximum amount of money out of their clients at any cost to reputation. No company seems to play the long game anymore--it's all about improving the next quarter's number. If that means providing a sad customer experience start to finish, they have apparently decided it is worth it.