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      02-09-2015, 04:58 PM   #1
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N55 reliability and maitenance

So the e90 is new to me, a 06/11 build 335i. Warranty is coming to an end in little over a month, but I'm only at 21k miles.

Higher mileage N55s. What's your experience? What's your ownership costs as the miles add on.

Thx!
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      02-09-2015, 05:13 PM   #2
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I have a 2011 e90 335i with extended maintenance and warranty.
Ownership cost, aside from some insurance work, = $50 for one round of extended warranty work on a leaking oil gasket.
You can add $1200 for the extended maintenance and $2250 for the Gold Extended Warranty.

Issues/maintenance dealership dealt with, aside from insurance & recall work:
Carwash x8
Oil Change x5
Wipers x3
Wiper fluid Refill x4
Radiator flush x1
Brake line flush x1
Brakes x4
Spark plugs x1
Engine Air Filter x2
Cabin Air Filter x1
Broken charge pipe x2
Headlights set to proper height and fix auto-level x3
Split radiator reservoir seam x2
Screeching speakers that wouldn't stop unless car was turned off x1
Left muffler replaced due to faulty flap x 1
Rear window gasket replaced x3
Rear right tail light assembly stopped working and replaced x1
Entire e-diff/DSC/DTC system stopped working, needed software update(I think?) x1
Car's electronics all went crazy for 30 minutes, car refused to release key, battery died, battery needed to be replaced x1
Rotors caused extensive shaking during braking and replaced x3
Oil gasket replaced due to leak x1
Cup holder stopped working, needed to be replaced x1
Broken Brake Sensor Wire fixed x1
Oil Sensor Wire fixed x1
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Last edited by Dozhdbog; 02-09-2015 at 06:54 PM..
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      02-09-2015, 06:18 PM   #3
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Quote:
Originally Posted by Dozhdbog View Post
I have a 2011 e90 335i with extended maintenance and warranty.
Ownership cost, aside from some insurance work, = $50 for one round of extended warranty work on a leaking oil gasket.
You can add $1200 for the extended maintenance and $2250 for the Gold Extended Warranty.

Issues/maintenance dealership dealt with, aside from insurance & recall work:
Carwash x8
Oil Change x5
Wipers x3
Wiper fluid Refill x4
Radiator fluch x1
Brake line flush x1
Brakes x4
Spark plugs x1
Engine Air Filter x2
Cabin Air Filter x1
Broken charge pipe x2
Headlights set to proper height and fix auto-level x3
Split radiator reservoir seam x2
Screeching speakers that wouldn't stop unless car was turned off x1
Left muffler replaced due to faulty flap x 1
Rear window gasket replaced x3
Rear right tail light assembly stopped working and replaced x1
Entire e-diff/DSC/DTC system stopped working, needed software update(I think?) x1
Faulty oil sensor(or loose wire?) x1
Car's electronics all went crazy for 30 minutes, car refused to release key, battery died, battery needed to be replaced x1
Rotors caused extensive shaking during braking and replaced x3
Oil gasket replaced due to leak x1
Cup holder stopped working, needed to be replaced x1
Broken Brake Sensor Wire fixed x1
Oil Sensor Wire fixed x1
Holy shit are you serious ? How many miles does your car have ? I own a e90 2011 m sport 335i x drive sedan and im out of warranty since 3 months and they offered me a extended warranty for 2500 dollars for like 15k miles so im thinking if something breaks it would cost me 2500 or less so im winning but now you got me scared as hell. How can all this stuff break .? Are you saying its not reliable at all .? I heard the n55 was bulletproof can n55 owners give their advice please
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      02-09-2015, 06:47 PM   #4
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Quote:
Originally Posted by Bours View Post
Holy shit are you serious ? How many miles does your car have ? I own a e90 2011 m sport 335i x drive sedan and im out of warranty since 3 months and they offered me a extended warranty for 2500 dollars for like 15k miles so im thinking if something breaks it would cost me 2500 or less so im winning but now you got me scared as hell. How can all this stuff break .? Are you saying its not reliable at all .? I heard the n55 was bulletproof can n55 owners give their advice please
My car has 68000 miles on it.
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      02-09-2015, 06:50 PM   #5
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Quote:
Originally Posted by Dozhdbog View Post
My car has 68000 miles on it.
Only 68000 ? Would you say its been very unfeliable or what ?
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      02-09-2015, 06:51 PM   #6
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My car has had the M Performance Suspension and the Stage 2 PPK installed since around 10,000 miles, which might be in part why it's had some of the listed issues. More power with a firmer suspension can probably cause some failures of peripheral engine parts here and there.

Also, I don't believe my issues are necessarily commonplace. This is what has happened to me during my time of ownership. I like to take my car out for sporty drives every other weekend or so, and I happen to also drive in a lot of heavy stop and go traffic, often for hours on end. I am sure that has an impact as well.
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      02-09-2015, 06:53 PM   #7
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Quote:
Originally Posted by Bours View Post
Only 68000 ? Would you say its been very unfeliable or what ?
"Only" 68000 miles?

That's over 20,000 miles a year for just over 3 years, and for probably 6-8 months of my ownership, the car has been in the shop for insurance work, maintenance, or modifications. That's a goodly number of miles to put on a car in the amount of time I've owned it.
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      02-09-2015, 09:11 PM   #8
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I'm at 50k and these are the issues I've had with my N55. No mods. I have a extended warranty through carchex that covered everything. $100 deduct

VANOS bolt broke (recall)
Adaptive Headlight issue
Replace rear brake sensor
2 injectors failed
Pressure Converter failed
Radiator fluid leak from tank
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      02-09-2015, 09:21 PM   #9
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Wow makes me feel better about my car. I have an 7/10 build E90 with 62k miles in which I have replaced the oil filter housing gasket, oil cooler gasket and just this weekend the valvetronic servomotor. However, I am not sure if the servo motor went bad due to a poor reinstall of my VANOS units from the recall. I am expecting the water pump to go at 80K miles and will be changing the auto trans fluid and filter at 75k miles.
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      02-09-2015, 09:44 PM   #10
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My 2007 E92 335 has 37K and I've had to do nothing.

Just regular maintenance like fluids, brakes, belt, plugs, tires.
And the mod bug of course.
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      02-11-2015, 11:02 PM   #11
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My car has 46k miles and just did the plugs and oil change is there soemthing imprtant to do soon ? And will my water pump break for sure or what ?.
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      02-11-2015, 11:17 PM   #12
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Quote:
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My 2007 E92 335 has 37K and I've had to do nothing.

Just regular maintenance like fluids, brakes, belt, plugs, tires.
And the mod bug of course.
Miller 335 how long have you owned your 335i? I have an 08 with 92k owned it 5+years and my list of repairs is twice listed above.
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      02-11-2015, 11:20 PM   #13
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Quote:
Originally Posted by imgreen View Post
So the e90 is new to me, a 06/11 build 335i. Warranty is coming to an end in little over a month, but I'm only at 21k miles.

Higher mileage N55s. What's your experience? What's your ownership costs as the miles add on.

Thx!
imgreen I hope you have a large pocket of $ because the repairs are going to start around 50k miles
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      02-12-2015, 07:23 AM   #14
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I guess I've been pretty lucky so far then. Besides regular scheduled maintenance I've had to take my car in for the dreaded vibration issue which turned out to be warped rotors, but I also believe I need new control arms bushings. Also, the tail light module went out so I got that replaced. Otherwise it's been pretty good to me. I'm approaching 45k miles with no mods except a few cosmetic things. I've also been on the PPK from the factory since I had a late 2011 build.
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      02-12-2015, 11:17 AM   #15
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There are so many threads on this already but why not...

2011 e92 M-Sport with 35k miles
-Broken Charge Pipe
-Heater Core Replacement
-Cup Holders
-Vanos Recall

Not really that bad but I wouldn't own the car without an extended warranty, I have a 3rd party warranty that covers electronics as well so I feel pretty confident for the next 6 years 50k miles. (about $2500 for warranty)
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      02-12-2015, 11:21 AM   #16
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Quote:
Originally Posted by Bours View Post
Holy shit are you serious ? How many miles does your car have ? I own a e90 2011 m sport 335i x drive sedan and im out of warranty since 3 months and they offered me a extended warranty for 2500 dollars for like 15k miles so im thinking if something breaks it would cost me 2500 or less so im winning but now you got me scared as hell. How can all this stuff break .? Are you saying its not reliable at all .? I heard the n55 was bulletproof can n55 owners give their advice please
Don't see why you are freaking out, all the issues he listed were annoying at the time I am sure but I wouldn't consider the car unreliable. Compare these to the real issues that n54s run into (HPFP, Wastegate issues) and this list is basically regular maintenance.
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      02-12-2015, 11:26 AM   #17
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2011 E92 335xi with currently 43k miles

oil change every 6k miles
front rotors and brakes all around 35k miles
lower control arms, 35k miles
water pump, failed right after the HPFP roughly 32k miles
HPFP (yes apparently this is an issue on the N55 too.. supposedly the new on is from a re-design), failed at about 30k miles
got some water in my front passenger seat (my fault) and it caused the X-drive control computer located underneath it to fail over time, so had that replaced 39k miles
front differential had a leak, BMW replaced the whole unit 39k miles
Vanos bolt broke off but that was replaced under recall; this also got me a new valve cover gasket and bolts plus a free oil change 37k miles
OFHG has a minor leak, replacing it at the end of the month; 43k miles

My 328 was a tank; the 335 is being a prissy little bitch. But all in all all work was warrantied so I'm not going to cry about it.

Last edited by Delta0311; 02-12-2015 at 11:33 AM..
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      02-12-2015, 06:01 PM   #18
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Quote:
Originally Posted by 335ivin View Post
Miller 335 how long have you owned your 335i? I have an 08 with 92k owned it 5+years and my list of repairs is twice listed above.
1.5 years.
I don't drive it daily FWIW.
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      02-13-2015, 12:02 AM   #19
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Ok i can see its not too bad but wow today my car gave me an alert that i was overheating then my car had no power on the highway. I stoppd and kept going after 10 mins. Luckily i was on my way for an oil change and the water pump broke so it cost me 820 cdn for the water pump including labor, do you think its fair price btw i do it at an indy shop. Also would have the dealer repleace it under extended warranty cause i refused it 2 weeks ago and jm feeling bad hehe. Also whats the hpfp and will it come soon for me since im at 50k miles thx for your time buds !
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      02-13-2015, 12:10 AM   #20
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Quote:
Originally Posted by 335m View Post
Don't see why you are freaking out, all the issues he listed were annoying at the time I am sure but I wouldn't consider the car unreliable. Compare these to the real issues that n54s run into (HPFP, Wastegate issues) and this list is basically regular maintenance.
HPFP isn't really an n54 issue. BMW now uses a totally different HPFP ever since the recall, same one used on the n55. matter of fact I still see customers with HPFP on the n55 but not as much.

the n55 is more reliable tho at least theoretically, because there are less moving parts. but at the same time more complicated. less potential if you are into modding. at least for now
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      02-13-2015, 12:30 AM   #21
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OP, I'm at over 109,000 miles on my 2011 335xi. Only major issue was the water pump at 89k (see link in my signature). The factory chargepipe connection flange cracked at 106k... probably due to my Vishnu tune and too much boost

For preventative maint, I change the oil at about every 8k miles, using a good Euro Mobil. I DIY most everything I can, avoid dealerships at all costs. Dozhdbog has a long list, but most are regular maintenance things that you would have to do to just about any hi-mileage car.

The walnut blast at 101k miles showed very little build-up compared to an N54 engine. I had it done anyway, even though it probably really didn't need it.

Your best sites for maintenance and parts are realoem.com, bavauto.com and ecstuning.com - there are many others, but these are my favorites... also if you are looking at a particular car to buy, the VIN decoder at www.bmwarchive.org/vin/bmw-vin-decoder.html

Check out this thread: http://www.e90post.com/forums/showthread.php?t=755057
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Fail(s): tstat hous/water pump 89k, Chargepipe 106k, coolant tank 114k, FRM3 114k
Maint: Walnut blast 101k, Trans/T-case Fluid 103k, OFHG 195k

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      02-14-2015, 10:09 AM   #22
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I just did water pump at 45 k miles do u think 850 cdn for labor and part is a good price and also is the hpfp sure to break eventually or no ? I have a 335 n55 2011
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