Join Date: Sep 2006
Vehicle: SLK 350
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The only time I find the Tiptronic useful is when I'm in NY city I like to remain in 2nd or 3rd gear so when I tap on the accelerator the car has instantaneous acceleration. Usually, I keep it revved around 3000-5000 rpm.
Other than that, I find leaving alone in D mode with Sport mode activated to be the best 0-60 time and the best overall performance and fuel economy.
Furthermore, I can't attest that when shifting down gears it actually shifts down to the specified gear but I have downshifted to low gears and the car definitely "feels" (it jerks) as if it is in the specified gear.