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E82 / E88 1 Series (2008 - 2013)
BMWs throw back to the iconic 2002, with a renewed form and function. The smallest car in BMW's line up but still packs a punch. Available in coupe or convertible, powered by either an inline 6 in the 128 or the twin turbo rocket sled 135.

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  #1  
Old 11-17-2010, 08:48 AM
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BestCS BestCS is offline
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Bad News! - BMW 1 series worst reliability record ever

Consumer Reports has identified the BMW 1 series with the worst reliability record ever. The problem mainly lays with the High Pressure Fuel Pump (HPFP), but the real problem is the company can't find a fix for it. They have tried five iterations without any success.

BMW will replace it without any questions asked and has even given a 5-year 120K miles warranty on the part. The real problem is the car stops dead in its tracks when the HPFP fails. Imagine what's going to happen to you if you are in heavy fast freeway traffic?

I'm afraid I'm out of the market for a car with these dangerous problems.
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  #2  
Old 11-17-2010, 08:57 AM
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dhc3 dhc3 is offline
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Glad I bought a 128 for my wife to drive, as it does not have the HPFP.
That being said, my 335 has 40K miles and never a problem!
dhc3
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  #3  
Old 11-17-2010, 10:29 AM
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Grain of salt here.... CR also rated the Chevrolet Prism lower then it's twin the Toyota Corolla years back, despite the cars being near identical and assembled with the same parts on the same assembly line.
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  #4  
Old 11-17-2010, 12:12 PM
jatbeni jatbeni is offline
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HPFP is a 135 only issue - that does not mean that the entire 1 series is unreliable.

This was my reason for choosing the 128i... the NA inline 6 is a proven product, honed over many years, if not decades.

I am sure BMW will eventually get a handle on the HPFP problems... so I will look into getting a Turbo down the road.

This is one instance where you can curse the farm lobby and their push for higher ethanol in gas... the one singular factor behind the higher HPFP failure rate.
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  #5  
Old 11-20-2010, 03:22 PM
C-Bear C-Bear is offline
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Originally Posted by jatbeni View Post
This is one instance where you can curse the farm lobby and their push for higher ethanol in gas... the one singular factor behind the higher HPFP failure rate.
A topic debated deadly back-and-forth. You have any definitive proof, or just talking like it, 'cause as far as I know you'd be the first.

Last edited by C-Bear; 11-20-2010 at 03:33 PM.
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  #6  
Old 11-17-2010, 09:07 PM
adgrant adgrant is offline
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HFP problem is an N54 issue so it applies equally to the 135, 335, 535, X3 3.5si, X5 35, 535GT.

I doubt many bmw buyers follow CR's advice, if they did they would be buying Toyotas.
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  #7  
Old 11-21-2010, 01:32 PM
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Originally Posted by adgrant View Post
HFP problem is an N54 issue so it applies equally to the 135, 335, 535, X3 3.5si, X5 35, 535GT.
+1

This topic is totally slighted. Why is the 1 series being singled out here? As mentioned above it is an N54 high pressure direct injection fuel pump problem which is not limited to the 1er. All BMW models that used the N54 engine is subjected to this potential problem.

My 07 335i has never had this problem however there are 335i owners who have reported up to 4 HPFP replacements. BMW has now issues a voluntary recall to replace the bad fuel pump along with a software update. The software problem may actually have been the root of the problem in the first place.

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  #8  
Old 11-17-2010, 09:10 PM
adgrant adgrant is offline
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Originally Posted by BestCS View Post
BMW will replace it without any questions asked and has even given a 5-year 120K miles warranty on the part. The real problem is the car stops dead in its tracks when the HPFP fails. Imagine what's going to happen to you if you are in heavy fast freeway traffic?
Firstly its a 10year 100k warranty on the part. Secondly, the car does not stop dead in its tracks. When it happened to me, I drove my car home (a distance of at lease 100 miles). I then drove it to the dealership the next day.
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  #9  
Old 11-17-2010, 09:21 PM
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Firstly its a 10year 100k warranty on the part. Secondly, the car does not stop dead in its tracks. When it happened to me, I drove my car home (a distance of at lease 100 miles). I then drove it to the dealership the next day.
+1 ^
Car lost power at 6000RPM in 2nd gear while doing a quarter mile run at the track. Was driven home exhibiting long starting crank, but otherwise drove normally at lower RPMs. CEL was on with codes indicating fuel trim out-of-range. Driven to dealership the next day for no-questions-asked replacement the same day.
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  #10  
Old 11-17-2010, 09:31 PM
mazdaspeed3KING mazdaspeed3KING is offline
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Does N55 tech use HPFP too? Has anyone with 2011 model 135i or 335i had this problem yet?
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  #11  
Old 11-18-2010, 05:59 AM
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Originally Posted by mazdaspeed3KING View Post
Does N55 tech use HPFP too? Has anyone with 2011 model 135i or 335i had this problem yet?
The N55 is a direct injection engine too, so yes it has an HPFP. However, I don't think there have been any confirmed failures of the N55 HPFP and the last replacement pump for the N54 I have only seen one reported but unconfirmed failure (which would actually be in the normal range of failure for any mechanical part).

And to OP... yeah... CR has always been my magazine of record when making car buying decisions...
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  #12  
Old 11-18-2010, 08:24 PM
mazdaspeed3KING mazdaspeed3KING is offline
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Originally Posted by thumper_330 View Post
The N55 is a direct injection engine too, so yes it has an HPFP. However, I don't think there have been any confirmed failures of the N55 HPFP and the last replacement pump for the N54 I have only seen one reported but unconfirmed failure (which would actually be in the normal range of failure for any mechanical part).
Thanks bud.. I hope the HPFP on the new N55 will behave better.... I'm not way too concerned about reliability anyway as the car will be my weekend ride. I got a ****ty vehicle to be used for work anyway (70+ mile round trip).

Last edited by mazdaspeed3KING; 11-18-2010 at 08:25 PM.
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  #13  
Old 11-17-2010, 10:30 PM
1zamboni 1zamboni is offline
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The problem with HPFP is known among 135,335 & 535, my area local dealer is buying back cars with such as problem, glad I gought a 128i no worry.
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  #14  
Old 11-18-2010, 06:52 AM
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Well I value CR's many years of research and testing greatly over your uninformed "opinion".
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  #15  
Old 11-18-2010, 08:21 AM
H2Orower H2Orower is offline
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Well I value CR's many years of research and testing greatly over your uninformed "opinion".
That's great. Let us know what toaster you decide on.
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Old 11-18-2010, 09:16 AM
adgrant adgrant is offline
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Well I value CR's many years of research and testing greatly over your uninformed "opinion".
Then you should probably sell your BMW.
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Old 11-18-2010, 10:40 AM
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Then you should probably sell your BMW.
Mercifully the last time he appears to have purchased one was quite some time ago. As a result, I think you can safely add him to your ignore list. I probably will.
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  #18  
Old 11-20-2010, 03:27 PM
C-Bear C-Bear is offline
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Well I value CR's many years of research and testing greatly over your uninformed "opinion".
I like CR, too, they often do good work -- but they're just one data point in what should be a larger overall field of research.

And you're claiming that a 135i with a shot HPFP will "stop dead in its tracks", which is entirely absurd, so be careful who you call "uninformed".
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  #19  
Old 11-21-2010, 08:27 AM
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Originally Posted by C-Bear View Post
I like CR, too, they often do good work -- but they're just one data point in what should be a larger overall field of research.

And you're claiming that a 135i with a shot HPFP will "stop dead in its tracks", which is entirely absurd, so be careful who you call "uninformed".
Dead fuel pump->no fuel->dead engine->car stops moving.

You should be careful about trying to understand logical arguments.

You'll find plenty of comments about the 135i's reliability in CR and other places. This problem is a big deal regardless of all the apologists here for BMW's miserable engineering failures past and present.

I recently visited a BMW service facility, and they became visibly upset when I interrogated them about the problem. Privately I was told that dealers "might" be limiting their inventory of turbos due to this problem. Also this problem does have an impact upon non-turbo cars.
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Old 11-21-2010, 08:47 AM
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Best, can you post any link to this article? I contend that you are a troll and that this does not actually exist.
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Old 11-21-2010, 01:56 PM
C-Bear C-Bear is offline
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Originally Posted by BestCS View Post
Dead fuel pump->no fuel->dead engine->car stops moving.

You should be careful about trying to understand logical arguments.
While you're attempting to wrap your brain around basic logic just enough so that you can fail to wield it as a club, may I also direct you to a course in classical physics; do pay close attention to the concept of inertia, which hopefully will help you to better understand what happens to an object in motion when its energy source is depleted. Simply -- in deference to you -- said object will not "stop dead in its tracks" (bonus hint: it slows down to a standstill.)

In the many documented instances of HPFP failures, not one has resulted in accident or injury, so do get over yourself, drama queen.
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Old 11-21-2010, 02:24 PM
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Originally Posted by C-Bear View Post
While you're attempting to wrap your brain around basic logic just enough so that you can fail to wield it as a club, may I also direct you to a course in classical physics; do pay close attention to the concept of inertia, which hopefully will help you to better understand what happens to an object in motion when its energy source is depleted. Simply -- in deference to you -- said object will not "stop dead in its tracks" (bonus hint: it slows down to a standstill.)

In the many documented instances of HPFP failures, not one has resulted in accident or injury, so do get over yourself, drama queen.
Not to mention the fact that the failure mode of the HPFP is reduced system pressure... not a loss of pressure. Hence the limp mode. An N54 equipped car with a failed HPFP can still be driven a short distance (~10-15 miles approximately) at moderate to low speeds... partly because the failed HPFP will still supply fuel, and the vacuum effect of the engine will still draw fuel from the tank.

But even in the event of a total system pressure loss the engine will sputter and die, but the car will continue to coast. If you're in heavy traffic and grind to a halt then the worst you're going to do is annoy those behind you. If you're on the highway you should have more than enough inertia to pull over to the side of the road and call for help. Like you said; remedial physics.

A friend of mine owns an 08 335i and he did have one HPFP failure a few months back. He said that had he not had the indication of a failure on the dash he would barely have been aware of the problem. He was on suburban streets driving about 25-30mph. He then drove the car to the dealer where they diagnosed HPFP failure and replaced it.
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  #23  
Old 11-18-2010, 04:47 PM
sambb sambb is offline
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own a 335i, have had 7 BMWs since the 80s, and 9 in my immediate family.
I dont want to make excuses for BMW or the HPFP. It is terrible, potentially unfixable, and i would never let my wife or children drive the car. We have had failures, and undoubtedly BMW has said it would be fixed, but keeps happening.
This will affect resale value, and i am glad it will. My hope is that BMW will learn from this and put out a better product. I dont want to defend this, if this happened to MB or audi, you guys would be all over them maybe...
This is a very dark part of BMWs reliability history. I hope the new turbo engines can turn that around. It is a shame.
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Old 11-18-2010, 05:32 PM
Peregrinus Peregrinus is offline
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How does this affect 128i drivers?
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  #25  
Old 11-18-2010, 07:04 PM
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How does this affect 128i drivers?
It doesn't, except for the fact that people, or magazines, will make blanket statements such as 'BMW I Series worst reliability record ever'. And that type of attitude can create an environment that could potentially have a negative effect on resale.

The 128 is a great car. Enjoy 'em.
dhc3

Last edited by dhc3; 11-18-2010 at 07:06 PM.
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