It actually makes it all more simple and transparent.
If it works it will be a good thing as it will likely increase the residual values of used cars. Also I would hope to see a return of equity on PCP deals at full term rather than the negative sitatuation that occured due to finance and deposit support as part of many deals.
The previous free for all wild west discount style wasn't healthy, it was about shifting volume and making little, zero or even sometimes negative margins on the unit and making money only on the finance. The issue is it's closing the stable door after the horse has bolted, so it will be interesting to see if the model works.
Technically it's not price fixing or market fixing as you would have collude with other manufacturers of the same product. No one else makes MB's so it's MB saying - this is the price, buy it or don't buy it.
Realistically it's a return to the 80's and 90's when you'd buy a new 190, you might get the odd option thrown in of you were a regular customer, but you paid full list. The car was still worth 70% of new price at 2-3 years old.........where's the downside? If you're a cash buyer it's likely to retain more value. If you're a PCP buyer it's likely to have a higher GFV and create equity at the end of the term.
It's this deprecition situation that lead me to buying an FF (well it was one of the factors). The alternative I was looking at was an Alpina B5 Touring.....they were pretty much the same price if I bought the Aplina new...sure I'd get manufacturers warranty....but then I did with the FF anyway. The difference being one of the £120K cars was likely to be worth £50k-£60K at 3 years old and the other wasn't.. repair costs? I bought a manufacturer warranty to insure against catastrophic repairs.
Don't assume it's bad, it might actually make £120k E63's viable to buy new as you won't be taking a huge bath the moment you drive it out the showroom.