Six problems related to power train have been reported for the 2008 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Audi A4 based on all problems reported for the 2008 A4.
2021 I brought an Audi A4 quattro 2. 0 2008 after having a test drive and haven't looked over the mechanic just said it was the fuel pressure high pressure sensor that was not a big deal after an hour buying it it took it to see my mom and it quit on me I had to have it towed home it would not start I took it to the mechanic and the mechanic said the same thing that it was a high pressure fuel pressure sensor so I purchased one and put on it couple months later it did the same thing the check engine light came on and it was told it was fuel pressure high pressure sensor again so I changed a fuel sensor two fuel pumps in the engine to electrical fuel pumps in the back four sensors camshaft sensor the cam follower ppc valves body throttle can follower engine light still comes on the car does not want to seem like it wants to accelerate when it gets to the normal temperature save your driving for 10 or 15 minutes still normal temperature not the radio the temperature it will start to cut off the rpm drops very fast I also have put in a fuel pressure regulator and a fuel pressure filter just the other day it came out again saying the same thing p0089 dakota's always been throwing ever since I brought the car and p 02993 it says performance one and performance too I have put a lot of money in to get in this car fixed in the I believe there is something wrong with with the fuel system in the cars they need to be on a recall.
Takata recall.
On 7/2/18 I merged on to 280 s from moorpark avenue in san jose. I had driven about a mile @ 60 (I do not use cruise control) when engine started to accelerate unexpectedly. I stepped on brake which slowed my vehicle but when I removed foot from brake it started to accelerate again. I was able to exit freeway safely and pull over into an empty parking lot. When I turned off engine I believe I hear a loud "roar" noise. Experience was frightening. I was afraid I would lose control of vehicle and cause major injury. I checked floor mat and floor to see if there was obstruction but there was none. I called tow company but after waiting 3 hours for c&m towing to not show up I decided to driver car around parking lot to see how it would drive. It drove fine so I drove home on surface streets. The next day took 2008 Audi A4 with 64k miles in to our mechanic. Diagnostics did not show any error codes. I do not know what caused sudden acceleration. Still I need to report this for the public record,in the event this happens again to me or others and it does not end well. Linda.
I was driving on rout 62 with my 16 year old niece and my car felt like it went into neutral, the lights on the dash started flashing. The brake pedal felt tight but I was able to pull over without causing an accident. It keeps happening and I am afraid to drive. (especially knowing there is an open recall because my airbags may not work or worse, cause severe injury due to metal shrapnel) I also read that my car has a hidden defect that the timing chain can go at any time, causing catastrophic engine failure. I brought it to an independent Volkswagen Audi mechanic where they did a diagnostic. He told me to bring it to someplace that specializes in transmissions. I looked in my owners manual and under transmissions. It says if this happens drive it to your nearest Audi shop. I emailed Audi because I read that there were recalls and technical service bulletins about the diagnostic code p0606. I saw that there are many class action lawsuits and complaints all about the same problem with my car. I can't wait years for a class action lawsuit. I live in new england and it's getting cold. This is my only car. I bought 6 months ago, in November. I have done all the service and maintenance recommended by Audi. What ever it is that is wrong with my car, Audi has fixed other cars but not fixing mine and my car. I take excellent care of my car, inside and out. It has been serviced at every recommend milage date. Nothing has ever gone neglected. My car is completely inoperable and it is due to defects that were made during manufacturing. I do not trust Audi customer service or the Audi service center.
Transmission shifting out of control.
Accellerator pedal stuck at wide open throttle. Had to shut the ignition and pull over and restart the car and it went back to normal. Googled the net and found that many people encountered the same problem.