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hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
67,194 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 BMW 325 engine problems

engine problem

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2006 BMW 325 Owner Comments

problem #17

Sep 232013

325 6-cyl

  • 83,000 miles


White smoke coming though ac ducts. When taken to shop they said it was coolant leak in heater core. Replacement would cost me $3000-$4000.

- Union City, CA, USA

problem #16

Apr 182013

325 6-cyl

  • 55,856 miles
I have a 2006 325I sedan with 55,856 miles on it. I took it in for a routine service on 4-18-2013. It has been maintained by only BMW dealerships in its lifetime with all required maintenance done on schedule. They called to notify me that upon inspection they had found the head bolt broken behind the oil filter housing, the oil filter housing gasket leaking and the drive belt tensioner leaking. I had not been experiencing any outward S+S of this problem. They quoted me $3400 to repair this. I was shocked that a car in such great condition would have such a problem at this mileage. I asked why this would happen and essentially was told it is unusual but does happen. They advised a repair in the future. I went home and researched this and found it has been a common problem in this model and that subsequently BMW has changed the type of bolt they use. So I thought I would call the customer service line to follow up on any assistance from BMW. Long story short they took the complaint but because I have a low mileage vehicle that has been outside of warranty for 3+ years they would offer no help. You know shame on BMW this is my 4th BMW and very likely my last due to this. This should be a recall, this should not be happening no matter how long it took to get to the 50,000 mile + range where this problem shows itself.

- Oakland, CA, USA

problem #15

Jul 112011

325 6-cyl

  • 127,855 miles
Water pump and thermostat both quit working at the same time. Causing absolutely no warning on the vehicle until it started overheating and smoking while driving on the highway. Could of caused a serious accident. Needed to immediately pull to shoulder. Note: Car has no oil temperature gauge.

- Macungie, PA, USA

problem #14

Feb 192008

325 6-cyl

  • 71,369 miles


Engine bolts have sheered off at three different mileages: 71,369, 115,162 and 134,835. All times they have created oil leaks and possible engine overheating. Also the sheered bolts could of gotten lodged in the drive belt causing loss of steering (although luckily did not happen). All sheered bolts cost upwards of $1000 per repair to replace.

- Macungie, PA, USA

problem #13

Nov 232011


  • 63,000 miles
The contact owns a 2006 BMW 325I. The contact stated that the vehicle was leaking oil through the head gasket. In addition, the sun roof cloth detached from the vehicle. The contact also stated that the steptronic transmission gears would not engage in ds or manual, only drive. The vehicle was taken to the dealer who advised the contact that there were no recalls for the failure. The vehicle was not repaired. The manufacturer was notified of the failure who offered no assistance. The failure mileage was 63,000.

- Guaynabo, PR, USA

problem #12

Jan 182012


  • miles
Broken head bolts and blown head.

- Provo, UT, USA

problem #11

Feb 012012

325 6-cyl

  • 70,000 miles


The head bolts are cracked/broken at approximately 70,000 miles.

- Lookout Mountain, GA, USA

problem #10

Jan 012010

325 6-cyl

  • 60,000 miles
Bolts for engine block valve cover broke off. Oil started leaking and exhaust smoking. Normal driving, with no auto modifications and regular maintenance. Contacted BMW North America, but received no answer.

- Coconut Creek, FL, USA

problem #9

Oct 012011


  • 83,400 miles
The contact owns a 2006 BMW 325xi. The contact stated that when starting that the vehicle would exhibit an abnormally loud noise and vibrate when first started. The vehicle was towed to an independent mechanic where they advised her that all four motor mounts were fractured and the vehicle needed to be taken to an authorized dealer. The vehicle was taken to the dealer where they confirmed that the motor mounts were fractured. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 83,400. The VIN was unavailable.

- Howell, MI, USA

problem #8

Dec 012011

325 6-cyl

  • 69,950 miles
Noticed aluminum headbolt had broken off and caused an oil leak close to the front of the head on the oil filter side of the block, causing a burning oil smell as oil found its way to the burning hot exhaust manifold, thankfully, it did not catch on fire but I feel that it easily could while driving and could cause a serious accident should I or someone else panicked as it would have happened, BMW has acknowledged this issue in tsb's and already rectified the issue in the 2007 models of the exact same cars. If BMW does not rectify this issue, my 5th BMW will be my last and I will take my hard earned money to Audi, I find it heartbreaking that a company that used to have such a Focus on quality is refusing to acknowledge such failure and to right the situation over a 3$ bolt that has not only the potential to cause harm to many but also to alienate what have been long time customers and true fans of the brand.

- San Antonio, TX, USA

problem #7

Aug 102011

325 6-cyl

  • 66,000 miles


Heads of head bolts broke off. Normal slow, short commute driving. Exhaust smoking.

- Krotz Springs, LA, USA

problem #6

Sep 162011

325 6-cyl

  • 93,900 miles
Heads of head bolts broke off. Oil leaking & exhaust smoking. Normal driving with no auto modifications and regular maintenance.

- Krotz Springs, LA, USA

problem #5

Sep 092011

325 6-cyl

  • 80,393 miles
There is a clear manufacturer defect concerning the aluminum bolts associated with the valve cover gasket on the BMW 2006 325I's. the National Highway Traffic Safety Administration has received several complaints regarding this manufacturer defect. The aluminum bolts have been redesigned since discovering the manufacturer defect. Bmwna have had numerous service issues related to these defective aluminum bolts. They have all openly admitted that the bolts in question were defective in nature and production, and that the bolts have been redesigned to avoid future failures. Some of these complaints included, and resulted in, vehicles leaking oil in the engine area causing fires in the vehicle. The defective bolts pose a serious potential risk to the safety of the owners of these vehicles, as well as to other drivers who share the roadway with them. It is my strong belief that this type of public safety risk cannot go on any further without proper intervention from the governmental agencies we employ as taxpayers. I respectfully request that BMW North America issue a voluntary recall of the BMW 2006 325I's affected by this manufacturer defect. I am not privy to what constitutes a vehicle's defective components to reach a "recall status". I have discovered that BMW of North America is keenly aware of the defective aluminum bolts, and has issued internal memos to their staff called "technical service bulletins" (tsb) to forewarn dealerships of this manufacturer defect, and the steps to remedy the issue. I have requested this information from BMW of North America, as well as several dealerships; and I was refused. I have diligently maintained my vehicle as prescribed by the service manuals, as well as the on board computer in the vehicle. My contention is extremely clear; the aluminum bolts are a manufacturer defect! fix them all at no cost to the consumer.

- Hillsborough, CA, USA

problem #4

Aug 012011


  • 110,000 miles
My BMW 300 series wagon (2006) had a brake and emergency warning light turn on. There was also a smell of burning oil. My mechanic identified the problem as broken aluminum bolts on the cylinder. He said he personally sees this all the time on 2006 models, that BMW is aware, and that they redesigned the part for later years. Likewise, my BMW dealer is aware of it and a simple google search finds at least 1000 complaints posted at various sites on the web. Aluminum does not hold up in this setting and these bolts cost more than$1200 to repair. I am told by my mechanic that it usually happens after 60K miles which means most are off warranty. BMW is aware and should either do a courtesy repair or be forced to do the right thing by NHTSA.

- Minneapolis, MN, USA

problem #3

May 152010


  • 25,000 miles
This vehicle has a magnesium engine block, and therefore uses aluminum bolts to fasten the head and the valve cover to the engine block. With normal driving, multiple cylinder head and valve cover bolts spontaneously snap off. This type of failure has the potential to disrupt the timing chain and loss of compression, leading to catastrophic engine failure.

- Irvine, CA, USA

problem #2

Sep 102009


  • 49,342 miles
Vehicle service engine soon indicator comes on repeatedly and dealership cannot repair defect after 3 visits.

- Colorado Springs, CO, USA

problem #1

Jan 032008

325 6-cyl

  • Automatic transmission
  • 33,225 miles
We had bought a 2006 BMW model # 325I, the vehicle had 33,000 miles on it. Now this car has a head cylinder leakage on it and the dealer needed to replace an engine on it. The fact is that this car was less then 2 yrs, and we had such a major issue already.

- Corona, CA, USA

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