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BMW plans to offer four-cylinder diesels in the U.S.

3-Series | November 12th, 2009 by 10
BMW 4 cylinder engine diesel

Inside Line has the story of the day: BMW plans to bring the highly awaited four cylinder diesel engines to the U.S. If you have …

Inside Line has the story of the day: BMW plans to bring the highly awaited four cylinder diesel engines to the U.S. If you have been a long reader of our website, you probably remember the rumors that started a year ago and then recently they somewhat become more real.

BMW is indeed planning for new diesel engines in the U.S. offering a smaller displacement. Along with the new diesel four bangers, we also expect to see the gasoline ones as well.

While the six cylinder diesel in the 335d is being considered a great performer and performance engine, BMW plans to offer a downsized oil-burner that will provide similar performance as the six cylinder, but far more fuel efficient.

BMW plans to offer four cylinder diesels in the U.S.The four cylinder diesel engine will make its debut in the 2011 BMW X1 SAV, the new entry level built by BMW in Austria.

Tom Baloga, BMW of North America’s Vice President of Engineering, says: “This engine needs to match the acoustic qualities of a 6-cylinder,” Baloga said, “and it needs to match the performance, as well as performing better in terms of fuel economy and emissions. The target is to produce enough horsepower to be comparable [in performance] to our N54/N55 six-cylinder turbos.”

Will the four cylinder diesel top the award winning six turbo diesel? So it seems like and that is one of the most exciting news we’ve heard in a while.

The new engines are expected to make into the new X3 and X5 models as well and if half the rumors are true, the next generation BMW 3 Series will also feature them.

While the information has never been officially confirmed, Inside Line posts an interesting disclaimer on their site:

“The Inside Line article never explicitly mentions turbos, but does say, “Our four-cylinder diesel will be so good that people will readily accept it as a replacement for six-cylinders. The target is to produce enough horsepower to be comparable [in performance] to our N54/N55 six-cylinder turbos.”

Personally, we’re quite excited to hear these news and after reading Andrew’s article on the BMW 123d, we’re even more sold it.

[Source: Inside Line ]

  • L1ndja

    Petrol will always be better then diesel (and i am not an american)the smoothness of a petrol engine will never be replaced by diesel

  • Andrew

    It won’t be replaced, no. But it certainly is comparable when you consider the performance combined with the economy. From what I can tell, BMW is making an active effort to educate the masses as to the benefits of modern diesels. After driving the 123d I was impressed enough that I would heavily consider one given the torque and overall economy of the engine.

    The 335d is an absolute hoot. At higher RPMs the 335d doesn’t sound far off from the petrol equivalent.

  • Parker

    Ill take a 320d Msport Sedan please! And a Z4 35i for the weekends :D

    • Andrew

      What he said!

  • 100$ GUY

    +100 L1. But never say never.

  • 100$ GUY

    Oh the smoothness and sound and perfomance of the inline sixes…..too great.

  • Doug

    What about their gas turbo 4 that supposedly revs to 11500 rpm? Will that be in the lineup?

    Speaking of RPMs, what actually limits the redline of diesel engines?

  • Vog

    I think the Diesel engine is limited revs due to the high compression ratios required for diesel fuel.,

    • Doug

      Why does that limit the rpm?

      I could see that maybe the fuel burns more slowly and can’t complete a stroke, or the valve springs aren’t fast enough (gas-racing)…. I just can’t visualize what about compression ratio would limit the rpms.

  • Andrew

    Without checking and off the top of my head I think the 335d and 123d were in the 5,000 to 5,500 RPM redline range.

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