2016 Audi Q5 engine problems

“I am reporting a defect related to carbon buildup in the Secondary Air Injection (SAI) system on my 2016 Audi Q5 3.0L Supercharged (engine code CTUC). My vehicle has been diagnosed by an Audi dealer with DTC P0491 – Secondary Air Injection System Insufficient Flow, and restricted secondary air flow has been confirmed through Audi-authorized diagnostics. This failure mode is described in TSB 2014569 and TSB 2014665/4. I discovered this when the check engine light illuminated and I sought a diagnostic from the dealer which cost me $249. Audi has acknowledged this condition as a defect in other vehicles by issuing Warranty Extension U19 (10 years / 120,000 miles), which covers carbon buildup in the secondary air injection ports. However, Audi denied U19 coverage for my vehicle solely because my VIN is not included in the warranty extension population. This condition results in increased emissions which impact the environment and which will cause the vehicle to not pass the emissions inspection required for registration. Audi has not provided any technical explanation distinguishing my vehicle from those covered under U19, despite identical fault codes, failure…”

“Audi had Valves and pistons fail on the highway at 75mph on Nov 28,2024 at 117000 miles Had the vehicle since 2021 and 17000 miles. Complained to the dealerships at the last 3 oil changes about excessive oil consumption. They told us not to worry about it, full aware that they had lost a lawsuit over this very issue. We were never informed about this lawsuit, and now Audi refuses to fix THEIR problem. We are very lucky when the engine blew up that there was no one behind us, otherwise it would have been a major highway accident. Now Audi wants $18,000 to replace the engine.”

“On [XXX] at around 8:55-8:59 I finalized the paperwork for a purchase of a car, received the keys, drove out of the dealership and by 9:02 the check engine light came on and the car shook. On [XXX] at around 2:22 pm, as I was driving, the car shook, pulled up to red light and the car would not move. It shook, rattled and died. The EPC light came on. I owed the car back to the dealership. I noticed that parts of the car next to the muffler and the tailpipe were belong held together with making tape. I received a call from the dealership from Tony. He said the car was fixed by the owner. No clear verification that the dealership owner is as trained or licensed mechanic.”

“My Q5 requires an additional quart of oil approximately every 500-1000 miles since purchased in early August . Services included two oil changes, replacement of pan gasket and fill tube O-ring. No drips on the ground, just a minimum level reading every 30 days. That definitely should not be happening without some plausible explanation other than "That's what German cars do. I have a BMW and the same issue." It was not disclosed that I would have to purchase a monthly supply oil motor oil in addition to the cost of the vehicle.”

“The side assist went out and I had it replaced at the dealership. I paid out of pocket for this cost. The engine had been burning oil then started causing problems while driving prompting me to take into the dealership. I was informed that the engine is in backorder and it’s been a year since I’ve been waiting. I purchased the car used with around 79,000 miles on it around February 2023.”

“continually having to add a quart of oil to the vehicle and rear tail pipes have turned soot black from oil burning out the tailpipe. I purchased the vehicle and i was having to have the oil changed a lot. then i noticed that the oil light was on every 500-1000 miles and i was constantly having the oil changed. i researched and the oil should not be changed that often. i took to dealership twice to no avail. i took it back with the same issue. they kept the vehicle almost three months and told me that motor would have to be torn down and if warranty didnt pay i would have to pay over 15,000.00 for a new engine. i dont have that kind of money for an engine and engines should last over 100,000 miles. the warranty company advised that if engine was torn down and itis an Audi problem they would not pay (they advised that Audi have this burning oil problem and they won't cover damages) and Audi will not take responsibility for the problem that is inherent in the engine and will not repair the vehicle.”