Other Fuel System Hoses Lines/piping, And Fittings Problems of Volkswagen Jetta Sportwagen

Having difficulty with my vw Jetta Sportwagen 2012 with its high pressure fuel pump having contaminated the fuel system in the car with metal shards captured on the fuel metering valve. Entire fuel system needs replacement. The car is a certfified pre-owned and only 11 months into a 2-year bumper-to-bumper warranty. The dealership, regional case dispute manager, and technical dispute inquiry have all come back and reported that it is an externally created issue from the diesel fuel I put into the tank. However, this is a well-documented ongoing issue with vw diesel engines with their high pressure fuel pumps dating back to 2009. The fuel I put into the car was tested and came back entirely fine. And by virtue of the metal shards being found on the fuel metering valve that is wholly indicative of the contamination being cause after the fuel has gone through the high pressure fuel pump, to the engine, and the excess is returning back to the fuel tank via the fuel metering valve. I was told that the metal shards were only found on the mesh piece/filter on the fuel metering valve not on the fuel tank filter itself (which you would think there would be metal shards on the fuel tank filter if the diesel that I put into the car was the original issue). The car has no acceleration after approximately 40 mph, and further driving of it will just further compromise the fuel system. The problem occurs very suddenly without warning, as it did in my case, which doesn't allow for correcting before it's much too late. I'm facing an estimated $5500 repair but that is on the low side of what has been reported by others that have faced the same situation. My car is under warranty, this has been an ongoing issue since 2009 with vw diesel high fuel pumps, I believe they should fix under the warranty as they know this is an internal equipment/parts failure.

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I filled the fuel tank, which was not quite empty, with diesel on 11/21. On 11/25, after driving a couple hundred miles and multiple trips, it would not start for many tries once it was shut off, even with engine hot. Far from home, I was afraid to shut it off. The temperature was near freezing, tank a little more than half. I got it started three more times after this and drove another 150 mi. Without issues, and it has not stalled. The car has never been misfueled. On 11/28, started it with 3 10-15 second tries and took it to the dealer. Dealer could never get it started, claimed to see metal particles in filter and took fuel sample for testing. Service mgr made comments about not needing to bleed fuel system, like when they took a sample fuel. Dealer could have caused (more) damage to hpfp by letting air in. Dealer has not seen similar symptoms in other tdi. High pressure fuel pump (hpfp) failure suspected (all replaced in April), vw blames poor fuel but lab report says "observed free water" and did not actually measure it. Lab estimated 0. 5%vol vs required ulsd spec of 0. 05% vol. Car will not start (but has started a few times after many tries and then runs very well). Dealer assumes it's fuel related but obd code is p2002(dpf pressure) so dealer included that in the $13k estimate. Vw consumer care indicated that regardless of replacing the fuel system or fuel, unless I have a completely different obd code, they may use the fuel test failure to deny any repair of any type in the future. Car must drive under its own power for tdi emissions buyback, but they say this condition is not acceptable. I am left to pay for the repairs, with no known resolution, myself. I am afraid to drive it (or that the dealer crippled it) when/if I do get it running.

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