VW Sharan Engine Mount Issues Causing Rough Idle

Had a similar issue with my 2011 VW Touran TDI. The symptoms you describe match exactly what I experienced, rough idle, excessive engine movement, and vibrations that got worse over time. The rubber mount degradation was causing these problems. After some basic diagnosis, my mechanic found that the wiring connection to the engine mount sensor was damaged, causing false readings. The cable had worn through due to constant engine movement. The repair involved replacing the damaged wiring and connectors near the motor mount assembly. Total cost was 95€ including parts and labor. This fixed both the error codes and the vibration issues. The engine now sits stable at idle and acceleration is smooth again. The transmission mount was also inspected but was still in good condition. To provide more specific advice about your situation, could you share: Which error codes are you getting? Is the vibration worse at specific RPMs? Have you noticed any clunking sounds when shifting gears? Did these symptoms develop gradually or suddenly? Proper diagnosis is important since mount wear can sometimes be a secondary symptom of other engine or transmission issues.

Last service was at 18393km and the error codes are indeed mount-related. Both the mounting bracket and rubber mount show severe deterioration based on visual inspection. The vibration gets much worse around 800-900 RPM and occurs mainly during cold starts. The defective engine mount seems to be the primary issue, as the movement is clearly visible when the hood is open. I can confirm there are no clunking sounds during gear changes, suggesting the transmission mounts are likely still okay. The mount failure developed gradually over the past few months, starting with minor vibrations that got progressively worse. No other related issues have emerged yet, but I am concerned about potential damage to nearby components if left unaddressed. Would replacing just the failed mount be sufficient, or should I consider replacing all motor mounts as preventive maintenance given the age of the vehicle?

Thanks for those details. Since we have similar VW models, I can share that I ended up replacing all engine mounts as a complete set after my initial wiring repair. The labor cost difference was minimal once they had everything apart, and it prevented having to do the job again when the other mounts eventually failed. The 800-900 RPM vibration range you mentioned matches my experience exactly. While the transmission mount was fine in my case, the other engine mounting brackets showed similar rubber deterioration when inspected. The total job came to 480€ for all new mounts including labor. The gradual progression of mount wear you describe is typical. Leaving a failed mount unaddressed can lead to: Increased stress on other mounting brackets, Additional vibration issues affecting nearby components, Potential misalignment of engine and transmission, Accelerated wear of remaining mounts due to uneven load distribution Given the age and mileage, replacing the full set of engine mounts makes sense as preventive maintenance. The difference in vibration and overall engine stability was immediately noticeable after having all mounts replaced rather than just addressing the obviously failed one.

Thank you for that detailed explanation. Given your similar experience with VW mount issues, I think I will go ahead and replace the complete set of motor mounts. The cost difference makes sense when considering the labor overlap, and I want to avoid having to repeat the repair process if another mount fails soon. I agree that addressing just the single failed rubber mount might be short-sighted given the age of all mounting components. The vibration symptoms match exactly what you experienced at that specific RPM range, which gives me confidence this is the right repair path. Will schedule the full engine mount replacement service next week. The 480€ cost seems reasonable for a complete job that should resolve all the current issues and prevent future mounting bracket failures. Plus, protecting surrounding components from excess movement and stress is worth the additional investment. Appreciate the thorough advice about potential complications from leaving mount failure unaddressed. This helped confirm my decision to tackle all mounts at once rather than piece by piece.