Torque converter problem identified - what is the outlook if left unresolved?
Posted: Thu Sep 24, 2026 11:43 am
Greetings everyone,
Following the recent complimentary replacement of my rear subframe by MB, I returned to my trusted independent mechanic to have the rear shocks replaced under warranty, as both the originals and their substitutes had malfunctioned. I noted that the vehicle experiences a slight fluttering vibration between 60-70mph during moderate acceleration, but not when fully accelerating or cruising. The RPM gauge fluctuates approximately 100 RPM.
They informed me that this is likely the infamous torque converter problem, and that the repair costs will be around £2000 for both parts and labour; the mechanic I consulted mentioned he experienced the same issue and attempted a fluid replacement, which provided a temporary solution, but the problem reoccurred shortly thereafter. The vehicle, despite its gleaming new rear subframe, is realistically valued at approximately £2,000 (150,000 miles, 2011 base model W204 with acceptable body condition), thus I have been exploring alternative automobiles; to be honest, I have been contemplating acquiring a somewhat newer model with fewer miles, although my financial situation is currently constrained.
Prior to acting impulsively, I would like to enquire if anyone has encountered this problem, and what the consequences are if one simply... postpones addressing it? I recognise that the problem is likely to exacerbate and damage the gearbox, making the vehicle valueless and placing me in a more precarious situation; however, am I being overly pessimistic? Pragmatically, I doubt this is the route I will pursue, but I would appreciate any insights on how the matter might unfold.
I appreciate your assistance beforehand.
Following the recent complimentary replacement of my rear subframe by MB, I returned to my trusted independent mechanic to have the rear shocks replaced under warranty, as both the originals and their substitutes had malfunctioned. I noted that the vehicle experiences a slight fluttering vibration between 60-70mph during moderate acceleration, but not when fully accelerating or cruising. The RPM gauge fluctuates approximately 100 RPM.
They informed me that this is likely the infamous torque converter problem, and that the repair costs will be around £2000 for both parts and labour; the mechanic I consulted mentioned he experienced the same issue and attempted a fluid replacement, which provided a temporary solution, but the problem reoccurred shortly thereafter. The vehicle, despite its gleaming new rear subframe, is realistically valued at approximately £2,000 (150,000 miles, 2011 base model W204 with acceptable body condition), thus I have been exploring alternative automobiles; to be honest, I have been contemplating acquiring a somewhat newer model with fewer miles, although my financial situation is currently constrained.
Prior to acting impulsively, I would like to enquire if anyone has encountered this problem, and what the consequences are if one simply... postpones addressing it? I recognise that the problem is likely to exacerbate and damage the gearbox, making the vehicle valueless and placing me in a more precarious situation; however, am I being overly pessimistic? Pragmatically, I doubt this is the route I will pursue, but I would appreciate any insights on how the matter might unfold.
I appreciate your assistance beforehand.