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 mechanism, and required repair procedure. The repair involves removal and cleaning of carbon buildup in the cylinder head secondary air ports and is quoted at approximately $2,500.
2016 Audi Q5 engine problems
33 complaints (42% of all complaints for this car). Typical mileage when it fails: 42,581. 1 crash reported.
- owner complaints
- 33
- of this car's complaints
- 42%
- typical mileage
- 42,581
- crashes
- 1
- recalls
- 2
Which part fails
- Cooling system3
At what mileage
Complaints by mileage at the time of the problem.
Audi Q5 engine problems in other years
Specific symptoms reported on the 2016 Audi Q5 engine
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
Engine and engine cooling: cooling system
- What is wrong
- Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2017 Audi A5 Cabriolet, A5 Sedan and Audi Q5 vehicles, 2012-2015 Audi A6 vehicles and 2013-2016 Audi A4 Sedan and A4 allroad vehicles. These vehicles, equipped with 2.0l Turbo FSI engines, have an electric coolant pump that can either become blocked with debris from the cooling system causing it to overheat or can short-circuit from moisture within the pump.
- Risk
- A blocked pump or a short-circuited pump can increase the risk of a fire.
- Remedy
- Audi will notify owners, and dealers will replace the pumps, free of charge. The recall began September 14, 2018. Owners may contact Audi customer service at 1‑800‑253‑2834. Audi's number's for this recall is 19N3/19N4. Note: This recall is in additional to the coolant pump software update applied as a remedy under recall 17V002.
Recall number 18V229000 · Recall details
Engine and engine cooling: cooling system
- What is wrong
- Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2017 Audi A5, A5 Cabriolet and Q5 vehicles, 2013-2016 Audi Allroad and Audi A4 vehicles and 2012-2015 Audi A6 vehicles. These vehicles, equipped with 2.0l Turbo FSI engines, have an electric coolant pump that can be blocked with debris from the cooling system, resulting in the pump overheating.
- Risk
- If the coolant pump overheats, it can increase the risk of a fire.
- Remedy
- Audi will notify owners, and dealers will update the software so that the power supply to the coolant pump is deactivated if the pump becomes blocked with debris, free of charge. The recall is expected to begin February 20, 2017. Owners may contact Audi customer service at 1‑800‑253‑2834. Volkswagen's number for this recall is 19M1.
Recall number 17V002000 · Recall details
What 2016 Audi Q5 owners say
Most recent owner complaints, unedited.
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.
The vehicle engine no longer works. The coolant line broke without warning, and the whole engine needs to be replaced. The vehicle no longer works
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. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
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.
The contact owns a 2016 Audi Q5. The contact stated while driving approximately 35 MPH, there was an abnormal burning odor inside the cabin of the vehicle. The contact checked the oil and coolant levels and became aware that the coolant level was very low. There was no warning light illuminated. The contact stated that after filling the coolant reservoir the odor went away. The contact stated that the odor returned, and the coolant level was very low. The contact had not taken the vehicle to a local dealer or independent mechanic to be diagnosed or repaired. The manufacturer had been informed of the failure. The contact researched online and related the failure to the federal safety agency Campaign Number: 17V002000 (Engine and Engine Cooling) however, the VIN was not included. The failure mileage was approximately 100,000.
SUV has major blind spot on side view mirrors. Also, consume excessive amounts of engine oil. Audi needs to include the Q5 2016 year in a class action lawsuit. OUTRAGEOUS!!!!!
Engine shuts off while driving at highway speeds. No engine warning light comes on, just complete lack of power. Need to pull off, put car in park and restart. Happens more often in colder weather, but is very sporadic. Audi said it was fuel issue. It is not. Jundreds of gas fill-ups with all different brands. This has been happening for years, and began within months of purchasing the car. It is getting more and more frequent. There is no fault code associated with it when I've brought it in for diagnostics. Very disconcerting when driving 75mph in left lane,and you experience a complete loss of power. Last incident was August 12, 2023
Questions about the 2016 Audi Q5 engine
Does the 2016 Audi Q5 have engine problems?
Owners have filed 33 complaints about the engine of the 2016 Audi Q5, 42% of all its complaints, more than any other problem.
At what mileage do 2016 Audi Q5 engine problems start?
The typical (median) mileage in owner complaints is 42,581 miles.
Is there a recall for the 2016 Audi Q5 engine?
Yes, 2 recalls: 18V229000, 17V002000. Check your VIN to see if your car still needs the free repair.
Other 2016 Audi Q5 problems
Electrical 10Steering 10Fuel system 9Airbags 6Acceleration 4Brakes 4Visibility 4Driver assistance 3Transmission 3Body 2Suspension 2Lights 1Seat belts 1
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