The contact owns a 2004 Audi A4. The contact was driving approximately 35 mph when the vehicle stalled with the illumination of several warning lights. The contact was unable to restart the vehicle and it was towed to an authorized dealer. The dealer advised that the engine failed due to a lack of lubrication and an internal compression failure. The vehicle was then taken to a local mechanic where the engine was rebuilt. After the repairs, the contact continued to experiences the failure with the sporadic illumination of the check engine warning light. The contact stated he performed a diagnostic which located the failure as a multi-cylinder misfire. The manufacturer advised that the vehicle be taken back to the dealer. The vehicle was not further repaired. The contact was concerned with his safety when operating the vehicle. The approximate failure mileage was 99,000 and the current mileage was 100,000. Updated 04/25/11 updated 04/27/11

- Summerville, NC, USA

My daughter was driving her 2004 Audi A4 at about 40 miles per hour when the car jerked, she then pulled up to the stop light and stopped. The car stalled and would not start. The engine warning light was on. We pushed the car out of the lane of traffic. A few hours later we went back to the car and it started up with no problem, we drove the car with no problems. This is a very dangerous situation and it appears that other owners have had this problem. There was an investigation PE08027 opened on this issue in 2008 and closed in 2008 without a recall.

- Renton, WA, USA

2004 Audi A4 1.8T engine sludge--complete engine failure. Audi absurdly refuses to honor their own extended warranty on the basis the car was run without oil. The engine failed internally because there was and is sludge blocking lubrication ports to the moving parts, I.e., failure. This is my executive synopsis, but I have volumes of supporting evidence, unbelievable as it is to think this could happen in America.

- Summerville, SC, USA

My 2004 Audi A4 is experiencing the same problems as the 2003's. quite a few others are experiencing it as well: www.aboutautomobile.com/complaint/2004/Audi/A4/fuel+system this is not the first time the 04's have had the same problem as the 03's. note ignition coil problem in 04's same as 03's yet Audi is acting to prevent a recall by having a "campaign to replace".

- Herndon, VA, USA

Two of the original "coils" in my 2004 Audi have failed on separate occasions. These should not be failing. My dealership stated there is a high failure rate. A recall of Audi coils was last made in 2003. I have had to replace all the coils in anticipation of more failures and under the recommendation of the dealership that stated I should expect all coils to fail. An internet search indicated this is a common problem. It appears there should be a recall of A4 Audi's so the coils can be replaced and a reimbursement to people like myself who had to pay hundreds of dollars to fix this original defect.

- Woodland Hills, CA, USA

2004 Audi A4 has had several repair problems. Consumer feels that the vehicle could be in an accident due to the problems. The consumer stated all of a sudden, the vehicle stopped running while in traffic. The dealer was unable to find any problems. Several months later, the engine wouldn't turn over. The battery was replaced as well as a bulb. The convertible top would not go down. An electrical part on the convertible was replaced, one of the headlights had burned out and the crank pulley was replaced.. the convertible top became stuck in the open position and had to be replaced. The convertible top replacement caused damaged to the headliner as well the drivers side window had a leak. Updated 02/07/11

- Boynton Beach, FL, USA

When the consumer came to a stop at an intersection, the vehicle stalled.

- Stroudsburg, PA, USA