Be patient, you have to take into consideration, that there is no real competition out there, so they have to start from scratch, design it, build it, make fixes, or improvements. Then do some long term tests to make sure it doesn't all go to crap in 4 months from now, then you'll see it out on the market. The mercedes Engines seem to be black, or white when it come to the Air Flow game. They either love it, or hate it. Well actually they all love it, just some need a little ECU/ Timing (Attitude Adjustment). Mercedes Benz has a hit and miss Electrical system in there cars. If you have good one..then you actually have a great one and don't think of that chunk missing from your savings account. If you have the other side, then you have what you would think to be a really expensive rough idling piece of sh*t, and boy do you hate getting those bank statements.