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Incorrect Fueling Protection System as standard for all BMW diesel models

News | January 31st, 2009 by 8

BMW is the first car manufacturer to equip all new diesel-powered models with an Incorrect Fueling Protection System as standard equipment. The innovative system helps …

BMW is the first car manufacturer to equip all new diesel-powered models with an Incorrect Fueling Protection System as standard equipment. The innovative system helps prevent cases of misfueling at the pump and its far-reaching consequences. A special mechanism fitted to the filler neck prevents drivers from accidentally inserting the fuel filler nozzle of a standard unleaded gasoline pump into the filler neck of a diesel-powered car.

This technology has been tried-and-tested in a variety of BMW models with diesel engines and will now be fitted to all diesel-powered BMW models, including the 335d Sedan and X5 xDrive35d now on sale in the US, right from the factory.

Incorrect Fueling Protection System as standard for all BMW diesel models

Every year, the German AA has to provide technical support in more than 5,000 cases of diesel misfuelling. Rectifying the consequences of incorrect fuelling is not just time consuming, it may also involve major costs. Even if the driver realizes their mistake before starting the engine, emptying and cleaning the fuel tank, pipes and the pump as well as changing the filter will be unavoidable.

The high number of cases of misfueling shows that just a short moment of inattention suffices to select the wrong fuel filler nozzle at the gas station. Particularly drivers who frequently use different cars from rental companies or company fleets often have to pay extra attention – more so, since the performance profile and acoustic insulation measures of modern diesel engines reduce the differences between diesel and gasoline-powered engines to a minimum. The difference in fuel filler nozzle diameter often prevents accidentally filling petrol engines with their narrower filler neck with diesel fuel, but during hasty filling maneuvers, the filler nozzle for unleaded gasoline can easily and mistakenly be inserted into the filler neck of standard diesel models.

However BMW will help drivers to avoid making this mistake. The Incorrect Fueling Protection System fitted to all BMW diesel-powered models is designed to allow only filler nozzles for diesel fuel to enter the filler neck. The filler neck of these models is fitted with a locking system that can only be released by a standardized diesel filler nozzle. An unleaded gasoline nozzle with its smaller diameter cannot make the same connection and its access is blocked.

The Incorrect Fueling Protection System is also designed for fuelling under exceptional circumstances, when the diesel-powered model may have to be fueled from a spare can. Narrow recesses on the outer walls of the filler neck allow the introduction of smaller amounts of fuel. Using a container for re-fueling requires extra care, which serves to remind the driver of ensuring that they use the right type of fuel.

[Source: BMW ]

  • Sam

    Damn, when my 335d comes, I am going to make the dealer put the correct Fueling Protection system. Ya would have thought BMW would have put the correct protection system on to begin with. :)

  • http://www.bmwblog.com Horatiu B.

    @Sam: :) Well, they assumed that BMW owners are smart enough to read the pump :)))

    But…I can see how this could be a problem

  • Lance

    Nice, but it is amazing how they call it a technology. It’s just a design element. But not all coutries have different sizes necks for diesel and petrol. It would be an innovation to have a sensor to detect the type of fuel going in and deny access in that way – probably going to be too costly.

  • Sam

    @Lance: And that same sensor could probably double as a nuclear/biochemical attack detector.

  • Imants

    I have an X5 diesel and have so far only found 1 pump nozzle that works properly. I have to use the adapter in every case. The auto-shutoff of the pump does not work with the adapter, so I have spilled diesel onto the side of my vehicle twice now.

    What a pain this is! I would likely have purchased something else had I known about it in advance.

    • morris

      During my first month of ownership, my gas station nozzle for diesel worked fine in my X5, then would not work.??? Looked inside the neck and could see the two black plastic clips that hold the flat plate in place were not being disengaged by the nozzle, any longer. The bottom plastic clip appeared not in place. I reached into the neck and pushed down on the lower plastic clip and the plate opened, so I could then insert the nozzle. But pain in the ass, so contacted by BMW dealer who agreed neck should be replaced. Seems like a cheap piece of plastic can topple a $50,000 car. With all the electronics that work great, this is the only thing defective, but the most important since if you can’t put fuel in your car, you don’t need Navigation or music.

  • Greg

    A friend of mine just called about a diesel fueling problem with his new X5 diesel. He couldn’t get the nozzle in past the stop. I have two VW diesels so he called the diesel guy, me.

    VW doesn’t have a system like this. I guess they figure that their customers who buy a diesel are smart enough to put diesel in it. So I Googled and found this site.

    Not all stations that carry diesel in my area have the big nozzle. When I told him about what I found here he said that on Monday he’s going back to his BMW dealership & having the damned thing removed. As Imants commented, even if you use the adapter it negates the nozzle auto shut-off. Seems pretty damned studid to me.

    PS. It’s Christmas Eve & no dealership is open to help my friend with his problem.

    • MD

      Most deisel stations where I live have the extra large nozzle. I am having trouble getting fuel without driving well out of my way. It makes sense to block the incorrect fuel type but this is really a hassle.

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