W205 clunks when downshifting

[Meco000]

Hello all, just bought a 2019 c220d 4matic about two weeks ago and the problem with the car since I got it is that sometimes after accelerating hard (even in comfort mode or sport+) and then braking the transmission clunks when downshifting (not sure but I think gears 3>2). This doesn’t happen all the time just sometimes and it happened once when casually driving and coming to a stop. Mileage is 120k km (75k miles) and I wasn’t able to send it to a mb service to check if transmission fluid was changed or not, but if anyone experienced this issue please explain. Also weird is that the car drops to 1st gear below 10 km/h and as far as I know 9g gearbox only drops to 1st gear after a full stop (drove a 2017 c220 with 9g and it wont drop to 1st gear unless fully stopped, maybe they changed the transmission from the pre-facelift to facelift version).

 

[alexanderfoti]

2917 pfl would have had the 7g which doesn't go into 1st until you stop, whereas the 9g does drop into 1st at very low speeds.

My first suggestion would be to check the level, may as well service the box at the same time.