ATTN 2011-2018 Jetta Tdi owners


Oct 15, 2019
I posted this in another thread, but thought it deserved its own post.

If you own one these cars, here is some advice that could save you from a $4000+ repair bill.
I own a 2012 TDI and had the fuel pump fail on me twice. Whether you are aware or not, there are two types of failures when it comes to the HPFP. First, the pump fails and simply needs to be replaced. This is what happened on my first failure. No big deal, it was covered under the extended warranty. The second failure however, is what they call a catastrophic failure. In this case, not only does the pump fail, but it shoots metal fragments throughout the entire fuel system. This means that anything the fuel touches had to be replaced. In my case, my mechanic was able to salvage the fuel lines, but everything else had to be replaced (fuel pump, fuel rail, fuel injectors and fuel filter)

After begrudgingly deciding to fix it, I came to find out the real reason for these types of failures. I had my car fixed at a diesel repair shop and the mechanic told me these types of failures are due to the extremely poor quality of diesel in the US. He said over the years, there have been so many things removed from the fuel that used to act as lubricants and the result it hefty repair bills like I experienced. He recommended I use an additive when I fuel up. I took his advice and went with the STP fuel injector cleaner. It costs about $10 and lasts 2-3 fill ups.

If you own one of these vehicles, I strongly recommend it. It could save you from having to decide between scrapping your car or a $4000 repair bill


Certified Volkswagen Nut & Vendor
Dec 11, 2001
outside St Louis, MO
There are just too many to list....
Yeah, and the vast majority run the entire time with nothing but good ol' #2 diesel fuel in them. Not saying it doesn't happen (I started a thread on these a decade or so ago), but it seems fairly rare in my experience. I'm up to a grand total of seven that I've seen ever, and I service these cars every day. I've seen double that amount of bad DPFs on them so far this year, and it's only April. Turbochargers, frozen intercoolers (that can result in everything from a no-start to a bent rod to a rod hanging out the front of the block), countless sensors, more DPFs, intake manifolds, leaky valve covers, exhaust throttles, thermostats, ... are all FAR and away more common.

So if you are worrying, there are more likely things to worry about. I just bought a 2010 Jetta from one of my customers, 310k miles.... it's original turbo went. It's had two DPFs, a deNOx catalyst, an intake manifold, and an EGR pressure sensor. Still rocking its original HPFP.


Top Post Dawg
Apr 26, 2003
Charlotte, NC
2010 JSW TDI silver and black. 2017 Ram Ecodiesel dark red with brown and beige interior.
Sorry to hear of your expensive rebuild but this is old news. There was even an NHTSA investigation into the HPFP failures that resulted in nothing. There were several extremely long threads that ended up getting closed due to lack of civility. The underlying cause is the change over in 2006 to ultra low sulfur diesel (ULSD) which lowered the sulfur content down to 15 ppm max. The method for removing the sulfur is hydrotreating the refined diesel fuel. The hydrotreatment not only reduces sulfur but pulls a lot of the surfactants and lubricants out of the fuel. This means that the fuel as supplied is no longer adequate for the then new engines. Bosch was aware of this and had many internal presentations where the basic recommendation was to not sell diesels in the US. We assume that Bosch has changed something on the HPFP at least 4 times since it's introduction in 2008, since there are 4 different part numbers. Bosch is currently in the middle of recalls on Ram 1500 and heavy duty diesels for HPFP failures but we're still holding the short straw.

Yes, there are additives that you can use that will give better lubrication. From what others have reported/shared on here in other threads, it seems that as little as 1% bio content offers enough lubrication. My 2010 is sitting at just under 160k miles and has had biodiesel blend run through it for most of it's life. Current SC labeling says up to 5% bio.


Veteran Member
Sep 8, 2013
Winchendon, MA
1998 Jetta, 2005 Golf
Isn't the real cause the failure of the US fuel industry to properly lubricate the fuel? Europe has a better standard fuel than we do...