Hi everyone thanks in advance. I have a C250d AMG 2015. I have noticed if I have to put my foot down to overtake that power will not be there again until I restart the car it’s getting quite dangerous as I never no what my car is going to move like. It’s as if it’s in a limp mode it will go through all the revs as normal but only give me to the equivalent of a 1.2 as opposed to the 2.1. There is no warning lights on and have been to Mercedes and they assure me nothing is wrong. Nothing on their diagnostics. They even took it for a test drive and said it’s all normal, but it’s not it only happens after full revs have been used. I took it to an independent garage and they said the same. I’m just not getting anywhere with it