VW Eos Rough Idle Points to Bad Engine Mount Fix

The mount wear symptoms you describe match what I experienced with a 2011 VW CC. The vibration issues started gradually but became quite noticeable at idle. A failed mount on these VW engines typically shows up first through increased vibration, especially when the car is stationary. The motor mount failure required replacing both the transmission and engine mounting brackets since they tend to wear as a pair on these models. The repair was significant but straightforward for a qualified mechanic. The work involved lifting the engine slightly to access the mount assembly. Getting a proper diagnosis is crucial, mount problems can sometimes be confused with other issues like spark plug problems or vacuum leaks. A competent mechanic should perform a visual inspection of all mounting points and test for excessive engine movement. They should also scan for specific trouble codes that might indicate mount-related issues. Based on the age of your Eos, this type of wear is not unexpected. The mounting system takes considerable stress over time, especially in stop-and-go driving conditions. Would recommend having all mounts inspected even if only one shows obvious signs of failure.

Thanks for the detailed response about the mounting system issues. My VW had similar symptoms and the replacement fixed the vibration problems completely. Could you share approximately how much you paid for your repair? Also wondering if you have experienced any other mount-related issues since getting it fixed.

I ended up paying 95€ to fix what turned out to be a loose cable connection rather than a complete rubber mount failure, which was a relief. The defective engine mount symptoms were identical to what you experienced, but the actual problem was much simpler. The mechanic found the issue during the inspection when checking the mounting bracket connections. Since the repair, all vibration issues have completely resolved and the engine runs smoothly again. The thorough inspection showed all my engine mounts were actually in good condition, which saved me from an unnecessary mount replacement. It is worth having a complete check done since mount-related problems can have multiple causes. No additional mount problems have occurred in the past year since this repair. The key was getting an accurate diagnosis rather than assuming the worst case scenario of total mount failure. If you notice any new vibrations, have them checked promptly before they potentially cause additional wear on other components.

I ended up finding a certified VW mechanic through an online forum who properly diagnosed the issue. The transmission mount was indeed completely worn, causing the excessive vibration. They also discovered the engine mounting bracket had hairline cracks from the stress. The total repair came to 780€ including parts and labor. They replaced both mounts as a set and realigned everything properly. The entire job took about 4 hours since they had to partially lift the engine to access all the mounting points. The difference after repair was immediate, no more vibration at idle and the engine runs much smoother overall. It has been 3 months since the repair with no issues. While the cost was significant, having a competent mechanic who properly diagnosed and fixed the mount failure was worth it. Much better experience than my previous repair attempts. Next time I notice any unusual vibrations, I will definitely get them checked right away to prevent additional wear on the mounting system. Really glad I found a reliable mechanic who specializes in these types of repairs.