2003 Audi A4: sudden loss of power

9 of the 210 complaints about the 2003 Audi A4 describe sudden loss of power.

owner complaints: 9
of this car's complaints: 4%
typical mileage: 56,600
recalls: 0

Is there a fix? 50 service bulletins cover this area of the car. See below

Sudden loss of power by model year

2019
1
2018
1
2014
3
2013
2
2012
1
2010
3
2009
1
2008
2
2007
3
2006
3
2005
5
2004
9
2003
9
2002
14
2001
10
1999
3
1998
4
1997
1

What owners say

Filed Jul 12, 2018 · Driver assistance, Engine · 112,345 miles · CA

Loss of power or late response to throttle. Tcs and ABS light limininted after replacing sensor. Vibertion in passenger side around 50 MPH or braking. Replaced ignition coil twice.

Filed Feb 6, 2011 · Transmission · 120,000 miles · FL

2003 audi a4 TCM failure almost LED to a serious accident. Was backing out of a driveway on a semi-busy road in winter park, fl when the transmission control module gave out on my 2003 audi a4 CVT transmission. The car lost all power and just would rev. But not move in reverse. I had to quickly throw it in drive and head into oncoming traffic until being able to get inot the proper lane. After driving home, I noticed that this is random and there is no logic to when it occurs. The problem is an intermittent electrical TCM problem in which signal 'drops' for a short period of time. I did a search online about theis issue with the 2003 CVT transmission from auid and the TCM shorting out while driving is a very common issue. I see this as a safety issue and definaltely hold the auto manufacturuer at fault. Audi has recalled these TCM's for their a6 and a8 line that year which uses many of the same components. Why has the 2003 a4 CVT not been recalled then. It has the same issues. Tcm failure and faults due to improper electrical connections and clutch pack failure becuase the transmission cannot handle the power or weight of the car. That is why from 2005 and on the CVT comes with 7 clutch plates. Bottom line is that if this issue is not addressed in the 2003 audi a4 CVT and you do not recall this year and version TCM (and maybe even the tranny itself) people will die in accidents that were no fault of their own. I am headed to the audi website and any others who will take my complaint about this issue. I see it up there with a stuck accelerator. If you cant control speeding up or slowing down and the problem is faulty electrical thus happening intermitently how can you stay in control of your vehicle?

Filed Aug 20, 2009 · Electrical · 96,000 miles · IL

1. Normal driving in suburban conditions - approximate speed between 20mi/hr - 30mi/hr 2. Sudden loss of engine power and subsequently engine runs rough 3. Ignition coils replaced by audi dealer.

Filed Feb 11, 2008 · Fuel system · 47,000 miles · HI

Tl*the contact owns a 2003 audi a4. While driving 40 MPH, the vehicle shut off without warning. In addition, there was a total loss of power. The mechanic stated that the fuel pump caused the failure. There is a recall for the fuel system, gasoline: delivery: fuel pump (the federal safety agency campaign id number 07v375000); however, the dealer stated that his VIN was not included. The VIN was unknown. The current and failure mileages were 47,000.

Filed Jul 4, 2007 · Electrical · 56,600 miles · OH

While driving, engine lost power, was able to get the vehicle into a parking lot and had it towed to mechanic. Ignition coil in cylinder #2 failed and had to be replaced.

Filed Apr 2, 2007 · Fuel system · 40,000 miles · NY

Tl* - the contact owns a 2003 audi a4. The contact stated that while driving the vehicle lost power without warning and was diagnosed as needing a new fuel pump. The dealer replaced the fuel pump. The identical problem occurred at 40,000 miles while driving at 30 MPH. There were no warning indicators. The vehicle was towed and diagnosed as needing a new fuel pump.

Filed Jan 24, 2007 · Engine · 59,000 miles · NY

Tl- the contact owns a 2003 audi a4. While driving 60mph, the engine light came on, the vehicle began to stall and the speed decreased to 20mph and resulted in a loss of power. The vehicle was towed and the dealer stated that the ingition coils failed. The contact spoke with audi who informed him that they would not pay for the repairs based on a recall.

Filed Nov 14, 2005 · Fuel system · 43,000 miles · CA

I was driving on the freeway when my a4 1.8 lost power...I barely made it to the shoulder and almost got hit by a car who must not have notice my speed or that my hazards lights were on...I was towed to the dealership and according to the service department it was a faulty fuel filter that caused the fuel pump to fail. Both part were replaced, the car was supposedly test driven to ensure it was operating properly...however, a month later I had another failure (not related to the fuel system).

Filed Oct 31, 2005 · Electrical, Engine · 32,000 miles · OH

Dt: the contact states while driving at 10-15 MPH the engine began to stall, followed by the check engine light. There had been no prior incidents. The vehicle would not accelerate beyond 20 MPH. There was the distinct odor of something burning coming from the engine compartment but no smoke. He pulled over to inspect the vehicle. He could not determine the problem and the vehicle towed to a dealer. The dealer said there was a faulty ignition coil in cylinder three. This was replaced under warranty. The same symptoms later returned at a speed of 55 MPH. There was a significant loss of power and he immediately pulled over. The vehicle was towed back to the dealership. The dealer replaced the ignition coil in cylinder one. He offered no explanation of this ongoing problem. Updated 01/19/06.