Engine Oil Leaking problems of the 2006 BMW 530

My car has been leaking engine oil for about three months. After I had it checked, I was told that one bolt on the engine was broken. I found that the same problem happened common. I think BMW should solve this problem through recall, because this problem is a manufacture defect.

The aluminum head bolt near the oil filter has sheared off causing a substantial oil leak in the same area as the sheared off bolt. I have contacted the BMW dealership about the issue and they admitted that this is a common issue with the n52 engines. This is the second time in 3 years that the aluminum bolts have failed. The first time resulted in a new valve cover and gaskets. . Read more...

While changing my oil, notice that oil has been slowly leaking around the valve cover. Looked on online forums and found that there are many people with the same issue. I inspected the area where they have stated common broken valve cover bolts and sure enough the bolts were broken. They literally just sitting in the valve cover with no purpose. They came right off when I pulled them up by hand.

We have owned this vehicle since 2007 and have not had too many issues with it. However, recently it developed an oil leak which BMW has refused to fix. What has happened is that four aluminum bolts that hold the top of the engine block on to the engine have broken for no apparent reason. According to the repair shop I took it to, BMW knows this is a defect. They should have never used aluminum bolts as fasteners for this engine. I have had to spend $2900. 00 to have these bolts replaced by an authorized BMW repair shop. This has stopped the leak. The dealer wanted $4300. 00 to do the same repair. This is not right. My mechanic said that this oil leak could have caused an engine fire if I had let it go. Any help you can be on this matter would be great.

All 3 aluminum head bolts were broken causing an oil leak which could result in a fire. Bolts were found in oil pan which could have damaged engine and caused failure. There are no warning lights or messages that indicate a problem. The only way to know there is a problem is an oil leak beneath the car. This was fixed out of warranty at a cost of $2131. 78. The same problem occured again 2. 5 years later on March 27, 2013 at 105,135 miles and a cost of $2236. 47. BMW doesn't think this is a major problem and says it is "typical" of a "high performance" engine. To me, this is not a normal maintenance item, not to mention the potential for fire and possible injury. There appears to be only one other complaint with your office for this specific problem for this specific car, but I think you will find similar problems for all BMW's with 3. 0 liter and other engines with aluminum head bolts, including the 325, 330, 528, 730, etc.