spwolf

Euro 6 just levels the field with EPA in the US... plus gives us better warranty, so good for us.

mmarshall

Although cylinder-deactivation may have some merit at cruise-speeds, I'm not a fan of the whole start/stop system at idle. Even using a capacitor or battery for electrical-storage, it usually requires a starter-motor as well. And, if it is a separate traditional starter-motor instead of, say, an electric motor back-up like on the Honda IMA hybrid-system (the IMA electric motor starts the gas engine), the starter-motor is going to get a lot of wear, heat, and stress from continually starting the motor in heavy traffic. Not only does the starter have to turn over the engine, but also the added stress of, at the same time, starting to move the whole vehicle forward from rest, unlike a conventional starter.

Blackraven

I know.

But on one end, they can't just keep doing this on-and-on. I bet that after Euro 6 is implemented in year 2014, the politicians in Brussels are already planning on Euro 7 and tightening of future emission regulations thereafter.

In fact, Mercedes Benz already mentioned that the pressure for engineering and R&D brought about by these immensely tightening regulations is just too much.............

Heck, it almost put their V12 engine development program at risk (and could've led to the death of the 6.5 liter V12 Twin Turbo engine of the AMG division)

Point is: I don't mind regulation or government or bureaucratic intervention........but please, some of their requests upon auto manufacturers seem a bit too extreme and unreasonable at times.