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  1. #1
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    The N52 six cylinder directly compared to the new N20 turbo 4 replacing it - 2012 328i vs. 2010 BMW 328i

    This is not a new comparison as it was done previously with the F10 528. Now time to see how far the N20 has raised the entry level (in the USA) 3 series game. Just by how much does it do that? Well, Insideline compared the 2010 3.0 liter N52 naturally aspirated six cylinder powered 328i to the new 2.0 liter N20 turbo four cylinder and the results are not all that surprising. The N20 328i ran the 1/4 mile in 14.1@98.9. The N52 328i ran the 1/4 mile in 14.7@94.8, fairly large difference for two motors rated at almost the same horsepower (240 for the N20 vs. 230 for the N52).

    Clearly, the difference is greater than just 10 crank horses and considering we have seen stock N52 dyno's in the 189 wheel horsepower range and N20 dyno's in the 230+ range that tells you where those 4 MPH through the traps are coming from. It is not only peak horsepower at work, as the N20 has a fatter torque curve as well. BMW underrated the N20 quite a bit, not that we are complaining. Full results below.

    Click here to enlarge

    Click here to enlarge



    Stock 328i on 91 octane dyno:

    Click here to enlarge

  2. #2
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    Interesting.....I guess BMW is fully bought into turbo charging even at the lowest level (4cyl)

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    I can say that the only true upgrade going from the E90 to the F30 is the engine. Having driven an F30; there is little more to be excited about. The steering response, solid feel and transmission all felt better in the E90 IMHO. Now, while this new engine is an upgrade in terms of performance and fuel efficiency, it is certainly a downgrade in smoothness and sound, go test drive one yourself.

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    If I was to go with a 4 cylinder it'd have to be a 4g63 or a F20C.

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    Click here to enlarge Originally Posted by SlicktopTTZ Click here to enlarge
    If I was to go with a 4 cylinder it'd have to be a 4g63 or a F20C.
    Not a in a BMW though.

  6. #6
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    The N20 would be a good choice then, if you wanna stay BMW. E30 M3 with a turbo would be awesome!

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    Click here to enlarge Originally Posted by SlicktopTTZ Click here to enlarge
    E30 M3 with a turbo would be awesome!
    S14 with a turbo? That's SOOOOOO hot.

  8. #8
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    Will be hard for a little I4 to match the smoothness of the I6 n52 - a very slow engine indeed, but smooth as hell............

  9. #9
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    Click here to enlarge Originally Posted by leo985i Click here to enlarge
    Will be hard for a little I4 to match the smoothness of the I6 n52 - a very slow engine indeed, but smooth as hell............
    None of these turbo motors will be as smooth, have the response, or have the beautiful curves of their NA counterparts.

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    The part that sucks about turbos. Oh well, I'd rather have performance to a little extra smoothness...................

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    None of these turbo motors will be as smooth, have the response, or have the beautiful curves of their NA counterparts.
    I know one 335i that has pretty damn beautiful curves Click here to enlarge

  12. #12
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    Click here to enlarge Originally Posted by Q4P Click here to enlarge
    I know one 335i that has pretty damn beautiful curves Click here to enlarge
    If you like cliff diving, sure.

  13. #13
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    If you like cliff diving, sure.
    Lol. I love cliff diving. Click here to enlarge

  14. #14
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    Drove the F30 today at the test drive event...they were all fully loaded models so of course they were superb, but I wonder how the base model will feel like.

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    Click here to enlarge Originally Posted by Q4P Click here to enlarge
    I can say that the only true upgrade going from the E90 to the F30 is the engine. Having driven an F30; there is little more to be excited about. The steering response, solid feel and transmission all felt better in the E90 IMHO. Now, while this new engine is an upgrade in terms of performance and fuel efficiency, it is certainly a downgrade in smoothness and sound, go test drive one yourself.
    I guess the F30 has the same 8-speed auto as in the X3? I was not a fan of that gearbox at all, when I drove the X3.


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    Click here to enlarge Originally Posted by M3_WC Click here to enlarge
    I guess the F30 has the same 8-speed auto as in the X3? I was not a fan of that gearbox at all, when I drove the X3.
    Why not?

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    As good as the N52 is, the N20 in the F30 with 8AT completely outshines the E90 with the N52 with 6AT. No comparison, really.

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    Click here to enlarge Originally Posted by maxnix Click here to enlarge
    As good as the N52 is, the N20 in the F30 with 8AT completely outshines the E90 with the N52 with 6AT. No comparison, really.
    Exactly, they raised the bar so far it isn't even a comparison.

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