Audi A7 EGR Failure Symptoms & Diagnosis Guide

I experienced nearly identical symptoms with my 2020 Audi Q7. The check engine light, poor acceleration, and excessive smoke were clear indicators of EGR valve failure. The automotive repair shop confirmed the EGR valve was completely jammed with carbon deposits. The repair involved removing and cleaning the EGR valve, replacing damaged components, and performing a complete emissions test to ensure proper function. The catalytic converter also needed inspection as these issues often occur together. This was a serious problem requiring immediate attention, as a faulty EGR valve can: Cause significant engine damage if left untreated, Lead to failed emissions tests, Result in decreased engine performance, Create unsafe driving conditions The repair process took about 6 hours at the shop. After fixing the EGR valve, fuel consumption returned to normal and the engine ran smoothly again. Regular maintenance and carbon cleaning can help prevent future EGR issues. Given your symptoms match so closely, having a professional diagnostic test done would be the safest approach before more damage occurs.

Thanks for describing your Q7 EGR valve experience. Your symptoms were exactly like mine, especially the rough idle and performance issues. The repair definitely solved my problems and the check engine light has stayed off since. Just curious, do you remember what the total repair cost came out to? And has everything been running smoothly since the fix, or have you noticed any other related issues popping up? I had some recirculation concerns afterward that turned out to be unrelated, but would be interested to hear your longer-term experience.

Thanks for asking about the costs. The EGR valve repair on my Q7 came to 355 Euro total, which included the complete cleaning, replacement of worn components, and final emissions test to verify everything was working correctly. Since getting the EGR valve fixed six months ago, the engine has been running perfectly smooth with no rough idle or performance problems. The check engine light has stayed off and fuel consumption is back to normal levels. The initial symptoms like the sluggish acceleration and smoke completely disappeared after the repair. A properly functioning EGR valve is crucial for diesel engines to control emissions and maintain optimal performance. The repair was definitely worth the investment to prevent more serious engine damage. Regular maintenance checks can help catch these issues early before they cause more extensive problems. The diagnostic test also confirmed no issues with related components like the catalytic converter, which was a relief since those repairs tend to be much more expensive.

I wanted to follow up on my experience after taking it to the mechanic. The automotive repair ended up being exactly what you described, a faulty EGR valve clogged with carbon deposits. The total cost came to 380 Euro, which included cleaning, parts replacement, and emissions testing. The vehicle emissions test afterward showed everything was working properly. The check engine light turned off immediately after the repair and has stayed off for the past 2 months. The sluggish performance and rough idling completely disappeared. Found a really good mechanic who specializes in these issues. They completed the work in about 5 hours and even showed me the gunked-up EGR valve they removed. No signs of catalytic converter problems either, which was a huge relief. The car runs like new now, no more jerking during acceleration or excess smoke. Fuel economy is back to normal too. Definitely glad I got it fixed before it could cause more serious engine damage.