What problems should I expect for 2007 335i at 151k miles?

[kdaigle23]

So I am in the market for a new car after my E36 M3 finally gave out on me for good. I'm going to rebuild the engine one day, but that's not exactly viable right now since I'm in college and have more pressing concerns. I've always liked the E90 series and the 335i looks great. I drove one once and it felt amazing. However, I know there are a lot of problems with these cars, especially with the injectors and the HPFP. I really love the 335i, but I don't know exactly how common the issues are or if I should even worry about them at 151k. What can you guys tell me as owners/enthusiasts?

[E90XI]

E90 is a solid car. Sadly I do not have a 335 but it is in a different category for maintenance and common issues. Take input from 335 owners. It's at pretty high mileage. I'd assume at that high mileage all the common issues have been replaced but may be in that time to be replaced again.

[Stephan1]

Check turbos, plugs, wires, basic maintenance stuff, belts etc. leaks. I would say turbos are pretty expensive and most likely to fail with that mileage, walnut blast probably needs to be done. Boost pipe leaks possible? If no mods I doubt your injectors are an issue . Get a history of what has been done from a dealer before you buy if possible


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[kdaigle23]

Here is the carfax report. I ran the car through the dealership and it looks like it hasn't actually been to a BMW dealership since 2011. They said the HPFP and injectors recalls had not been done on the car from what they can tell.

https://www.carfax.com/VehicleHistory/p/Report.cfx?partner=DFI_0&vin=WBAVB73507KY60878&source=BUP

[MysticRob]

What Stephan1 said.
With higher mileage like that I'd ensure a compression and leak-down test get done so you'll know the internals are okay, just in case. You don't want to inherent someone else's problem who maybe beat on it. That said, the top and bottom ends on these things are very stout so I wouldn't worry about any eventual big problems there if the tests are good and you maintain it well.

Mine was at 150 PSI or better on all 6 cylinders, a 1-owner 2009 E90 with 134k miles on it, or an average of 17k miles a year, mostly highway due to area it was registered in.

If you do buy it, get familiar with the common problems and address them if you find anything wrong.
I just bought mine 2 weeks ago and figured I'd dive into it just to get a better idea of what I was dealing with. Was surprised it had a new serpentine belt on it at least.
Figured I'd take the intake off and at least look at the intake valves, and glad I did, because the valves were pretty bad. I walnut blasted in my garage, swapped out the plugs (had 20k on them according to carfax) and coils (preventative measure pre-tune since originals were still in it), brake-cleaned the VANOS solenoids (they looked good anyway), swapped out the stock PCV valve (it was filthy and stuck) for a new Rob Beck PCV valve, and once I knew those were all addressed I put a BMS DCI and MHD tune on it.

Thing runs like a champ now.

I also stuck a bottle of Seafoam in the gas tank to clean the tank and injectors, and hopefully the piston tops a bit since I could see some carbon on them when I changed the plugs and did the valves.
Will also do some Seafoam thru the diverter valve hose connection on the intake to hopefully address the piston tops a bit more, and throw some Seafoam into the oil a few hundred miles before the next oil change to ensure the PCV system and piston rings, etc, aren't all gummed up going forward.

I also have a Mishimoto FMIC coming so I can up the tune and boost a bit just to scare the wife.
Might also want to do some preventative maintenance by changing the coolant and transmission fluid at some point soon too...