I’ve seen some people say that they’d rather pay the premium for a high mileage manual than a low mileage (30,000km vs 120,000km) triptonic, that they’d rather get a colonoscopy from Edward Scissorhands than have a triptonic Porsche.
I’ve tried triptonic and while there is lag, it shifts faster than anyone I know If I buy a triptonic turbo 997 because it fits in my budget and I don’t mind the ride (997 gt3 to fill that need) am I really never gonna be able to get it off my hands because people can’t stand triptonics?
I didn’t know that the Tiptronic unit was a MB 722.6.
I am very familiar with those transmissions and they are bullet proof. My family has owned one from new (98) all the way up to 220K miles. It had its first transmission service at 155K miles when it started to slip and worked perfectly afterwards.
I also personally owned one in an 05 ML350; it did have issues due to the TCU plug leaking fluid out. Thankfully replacing the TCU plug fixed it; but that could have been an expensive fix if the oil seeped into the TCU. The plug and transmission service was only 760 bucks back in 2014 at the dealer.
Which brings me to the only Achilles heel of the 722.6 on Mercs: transmission fluid can seep up through the TCU plug into the TCU which becomes an expensive fix.
Also early 722.6’s were advertised as sealed for life; but unmaintained units respond well to a fluid change and there’s almost no risk of problems in the valve body.