really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
101,184 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.

2004 BMW 745 engine problems

engine problem

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2004 BMW 745 Owner Comments

problem #11

Feb 022018


  • 160,000 miles


The contact owns a 2004 BMW 745li. While driving unknown speeds, the vehicle hesitated and the check engine indicator illuminated. The vehicle was taken to an independent mechanic and it was diagnosed that oil was leaking onto the manifold. Also, the wheels and axle needed to be replaced. The vehicle was not repaired. The vehicle was taken to BMW of stratham (71 portsmouth avenue, stratham, nh 03885, (603) 772-0000), but was not diagnosed or repaired. The dealer refused to work on the vehicle and advised the contact to purchase an aftermarket warranty. The contact declined the recommendation. The manufacturer was not notified. The failure mileage was 160,000.

- Dover, NH, USA

problem #10

Jul 202015


  • 95,000 miles
Engine valve guide seals made of improper material that fails causing oil leakage into exhaust, fouling of catalytic converter, failure to pass inspection and pollution. The valve guide seals are not compatible with high engine temperatures which causes the seals to fail at 80,000 to 120,000 miles. My seals failed at approximately 95,000 miles causing oil consumption in excess of 1 quart per thousand miles. Replacement of the valve seals requires extensive engine read down and costs approximately $9,000 to repair.

- Wheatley Heights, NY, USA

problem #9

May 222016


  • 104,000 miles
Coolant transfer pipe seal is made of improper material that is not compatble with high engine temperatures. Seal fails causing loss of engine coolant. Seal fails at 40,000 to 110,000 miles. Repair is approximately $6,000 because engine must be taken apart to replace the seal. My seal failed at 104,000 miles. Loss of power steering and vehicle stability control due to coolant leak onto serpentine belt.

- Wheatley Heights, NY, USA

problem #8

Dec 052014

745 8-cyl

  • 44,000 miles


I have driven 2004 BMW 745I for the past 10 years. It has 44000 miles on the odometer. Recently, it stops while driving. Each time it stops, the gear is shifted to neutral. When I tried to start engine, it won't start. After using cell phone to request for help, the engine starts. It happened more than five times.

- Los Angeles, CA, USA

problem #7

Mar 012012

745 8-cyl

  • 130,000 miles
The contact owns a 2004 BMW 745li. The contact stated that there had been an extensive oil leak from the vehicle. The vehicle was taken to an authorized dealer several times but the failure was not able to be duplicated or diagnosed. The contact also described a burning metal and oil odor in addition to a while cloud of smoke. The alternator and battery were repaired twice by an independent mechanic however, the failure persisted. The vehicle was then taken to a different repair facility where the contact was advised that the alternator, alternator seal gasket, valve and seals needed to be replaced. The manufacturer was notified of the failure multiple times. The approximate failure mileage was 130,000...updated 05/20/14 updated 06/02/2014

- Forest Hill, MD, USA

problem #6

Dec 162010

745 8-cyl

  • Automatic transmission
  • 73,245 miles
The contact owns a 2004 BMW 745li. The contact stated that while driving approximately 25 mph, the engine stalled. The contact mentioned that there were no warning lights illuminated. The vehicle restarted on the first attempt and resumed normally. The failure recurred on seven separate occasions. The vehicle was taken to a dealer where the failure was unable to be diagnosed. The dealer and manufacturer were made aware of the failure. The failure and current mileage was 73,245. Updated 5/8/14 the consumer stated the engine kept running and did not die.

- Palm Springs, CA, USA

problem #5

Mar 172014


  • 117,000 miles


The contact owns a 2004 BMW 7451. The contact stated that the vehicle stalled numerous times while driving at various speeds without warning. The vehicle was taken to an independent mechanic, who replaced the battery and the alternator however the failure was not corrected. The dealer advised the contact that the vehicle was not included in NHTSA campaign number 04V344000 (engine) and 03V240000 (power train). The approximate failure and current mileage was 117,000.

- Delray Beach , FL, USA

problem #4

Dec 182013

745 8-cyl

  • 136,000 miles
I have a 2004 BMW 745I, I noticed a lot of smoke coming from tail pipe when the car is idling/driving. I took it in for a diagnostic at a replicable repair shop, and I was told the valve guide seal's where worn and needed replacement. The problem is that the valve guide seals becomes hard over time and doesn't provide a proper seal for the valve stem's. this allows oil to pass through the valve stem seals and enter the combustion chamber and the exhaust.( not only does this cause pollution) it damages the cat converter therefore you can not pass a smog test. This is a well known issue by BMW, BMW repair shops, and certified mechanic across the United States. I contacted BMW corporate office regarding the problem, I was then contacted back by [xxx] with BMW executive customer care. I was told I needed to take my car to BMW of Ontario to get a diagnostic, because they don't except third party opinions. BMW of Ontario contact me to tell me it will be $6,500 because they need to remove the engine and tear it down for inspection. I was later contact by [xxx], who told me that her field manager denied any further diagnostic or repairs on my car. Something needs to be done about this very inevitable issue that happens to 5,6,7 and X series BMW models that are on the road causing nasty pollution. See link's below for example: Https://www.youtube.com/watch"V=dvo85lmzmfm https://www.youtube.com/watch?V=S-uz__R1aok https://www.youtube.com/watch"V=vzezraoihky information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Apple Valley, CA, USA

problem #3

Dec 012013

745 8-cyl

  • 84,230 miles
My vehicle is displaying the exact symptoms described in your previous recalls (04V344000 and 03V240000). The car stalls and won't restart, check engine lights go crazy, transmission failsafe and stability control warnings come on, valvetronic desynchronization, ect. Went to a BMW dealer and they denied either of these recalls existed. Called BMW corporate and they said my car is not affected by the recalls, which is obviously not true considering the problems it has and the uncanny resemblance to your recall descriptions. BMW has offered no assistance, can you?

- Torrance, CA, USA

problem #2

Dec 182012


  • 90,000 miles
The contact owns a 2004 BMW 745li. The contact stated that there was an oil leak from the vehicle. The vehicle was taken to an independent mechanic where they advised him that the hose to the engine was fractured, causing the oil leak. The vehicle was not repaired. The manufacturer was contacted about the issue and offered no assistance. The failure and current mileages were approximately 90,000. The VIN was unavailable.

- Fioux Falls, SD, USA

problem #1

Jun 012012

745 8-cyl

  • 79,550 miles
I was driving on the expressway and everything went haywire and all the lights came on and the engine felt like it shut off. After I pulled over I shut it off and tried turning it back on but it wouldn't start. I sat on the side of the road for 25 min and tried it again and it finally turned back on.

- Aurora , IL, USA

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