question about 7 speed auto w/manual shift
 

I never had an auto with manual shift, I now have a C300. Just a few questions, when shifting should I take my foot off the gas or just keep it down. And when in manual, how do you back into auto? Thanks.

keep it down.

pull right on the gear shift lever for 2 seconds to go straight to D. Otherwise, you can repeatedly push right to eventually get to D.

Also if you are at say a cruising speed or highway speed and you want to pass somebody. Hold the shifter to the - and the car will drop down to the lowest possible gear.

-Ryan

Just keep your foot down, especially if you need instant power. Note that there is a safety feature that will automatically upshift if you're passing redline so you can't really hurt the engine.