Most common 2006 Audi A4 problems
Share of the 295 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Audi A4 complaints by model year
Best A4 years: 2011, 2016, 2012. Years to avoid: 2020, 2008, 1998, 2006, 1999. Compare all years →
2006 Audi A4 recalls (3)
Air bags › Frontal › Passenger side › Inflator module
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2005-2008 Audi A4 Sedan, A4 Avant, S4 Avant and S4 Sedan, 2007-2008 RS4 Sedan, 2004 RS4 Cabriolet, 2007-2009 A4 Cabriolet and S4 Cabriolet, 2005-2011 A6 Sedan, 2006-2011 A6 Avant, and 2007-2011 S6 Sedan vehicles.
Remedy: Audi has notified owners, and dealers will replace the passenger frontal air bag with an alternate remedy part, free of charge. The recall began June 29, 2018. Owners may contact Audi customer service at 1-800-253-2834.
Air bags › Frontal › Passenger side › Inflator module
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2009 Audi A4 Cabriolet, S4 Cabriolet, A6 Avant, A6 Sedan and S6 Sedan vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, the District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey,…
Remedy: Audi will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began March 30, 2018. Owners may contact Audi customer service at 1-800-253-2834.
Air bags › Frontal › Passenger side › Inflator module
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2004-2008 Audi A4, and 2005-2011 Audi A6 vehicles originally sold, or ever registered, in Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands…
Remedy: Audi will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. Owner notification letters were mailed April 28, 2017. Owners may contact Audi customer service at 1-800-822-2834.
What 2006 Audi A4 owners say
Lights all 159 →
The left headlight flickers and turns off. Changing the bulb did not fix the problem and neither did changing the ballast. I found that there was a settled class action lawsuit however they said that the lawsuit extended the warranty for headlights to 5 years. The lawsuit was settled in 2013 and my car is a 2006 model so I am not sure how it could ever help me.
When driving at night right low beam will flicker and then go out. I get a warning icon referencing "right dipped headlight". If I turn the headlight switch from auto position to off position and then turn back to auto, the light will come back on. It will then stay on for a while and typically goes out again after some random time period causing me to repeat the process. I don't like doing this traveling at high speeds at night since I have to disable my headlights to get everything working again. I took it to the Audi dealer and they did their guided fault tests and found no faults. They "believe" the igniter is faulty which is a $625 part plus labor to replace. I didn't go ahead with their suggestion since they could not guarantee that it would fix the problem. …
Air bags all 73 →
The contact owns a 2006 Audi A4. The contact stated that while driving approximately 45 mph, the wife crashed into the rear of a second vehicle. During the crash the front driver side air bag did not deploy, however, the passenger side airbag did deploy, and both the front and rear driver side and passenger side headrest restraints activated. The contact indicated that no passengers were present in the vehicle during the crash. No injuries were reported. A police report was taken at the scene and the vehicle was towed away. The cause of the failure was not yet determined. The manufacturer was not contacted. The local dealer was notified. The failure mileage was 160,000.
My personal Audi A4 was involved in a front end collision on an inner-city road due to loss of friction on frozen ice. Despite there only being a driver present in the car, the driver side airbag from the steering wheel did not activate while the passenger side airbag did. I had already previously checked the Takata recall, which affect the exact model of my vehicle, yet when I entered the VIN, it displayed that no recalls were present. The collision happened at a speed of less than 25 MPH, and the unneeded damage costs pf the passenger side airbags alongside the health risks of not having an airbag deploy for the driver has LED me to filing this complaint as it was a very unpleasant experience.
Engine & cooling all 21 →
Tl contact owns a 2006 Audi A4. While driving 35 MPH, the contact noticed smoke coming from the front and back of the vehicle. She pulled the vehicle over and turned off the ignition. She then heard a loud explosion underneath the vehicle. She exited and noticed flames underneath the vehicle and from under the hood as well. When the fire department arrived, the front half of the vehicle was completely engulfed in flames. The fire was extinguished, but the fire department was unable to determine the cause of the failure. A fire report was filed. The contact did not notice any failures prior to the fire. The vehicle was inspected by an insurance adjuster, who was also unable to determine the cause of the failure. The vehicle was labeled as destroyed. The contact is in the process of notifying the manufacturer. The failure mileage was 33,000.
Tl* the contact owns a 2006 Audi A4. The contact stated that there was a sweet, burning smell present in the vehicle for two years. The vehicle was taken to the dealer several times and the contact was always advised that nothing was wrong with the vehicle. The radiator failed at one point and the vehicle was taken to a local mechanic. The contact was advised by the mechanic that a plastic piece of the radiator had fractured on and allowed anti -freeze to leak into the vehicle, causing the sweet, burning odor. The vehicle was repaired. The VIN was not available. The failure mileage was 89,000 and the current mileage was 104,000.
2006 Audi A4 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.0L 4-cyl turbo | CVT | FWD | 21 / 30 / 24 |
| 2.0L 4-cyl turbo | 6-speed manual | FWD | 20 / 31 / 24 |
| 1.8L 4-cyl turbo | CVT | FWD | 20 / 28 / 23 |
| 2.0L 4-cyl turbo | 6-speed manual | 4WD/AWD | 20 / 28 / 23 |
| 2.0L 4-cyl turbo | 6-speed automatic | 4WD/AWD | 19 / 27 / 22 |
| 3.1L 6-cyl | CVT | FWD | 18 / 27 / 21 |
| 3.1L 6-cyl | 6-speed automatic | 4WD/AWD | 17 / 25 / 20 |
| 3.1L 6-cyl | 6-speed manual | 4WD/AWD | 15 / 25 / 19 |
| 3.0L 6-cyl | 5-speed automatic | 4WD/AWD | 16 / 23 / 18 |
EPA ratings. Class: Compact car.
Frequently asked questions
Is the 2006 Audi A4 a good car?
Based on 295 owner complaints filed with NHTSA, the 2006 A4 rates avoid: 2.4× as many complaints as a typical year of the A4 at the same age. It is one of the A4 years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2006 Audi A4?
The lights — 159 complaints, 54% of all complaints for this model year, most often about headlights. Next are the air bags (73) and engine & cooling (21).
How many recalls does the 2006 Audi A4 have?
There are 3 recalls for the 2006 Audi A4, the most recent from June 22, 2018 (inflator module). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Audi A4?
The best years by complaints, compared at the same age, are 2011, 2016 and 2012. Years to avoid or approach with caution: 2020, 2008, 1998, 2006 and 1999. See the full Audi A4 years comparison.
At what mileage do 2006 Audi A4 problems happen?
The median mileage reported in complaints is about 60,000 miles; 35% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.