New BMW Z4 Will Probably Offer Two Different Versions Of 3.0Lt Straight-Six

BMW is currently testing the next-generation Z4 with an inline-six engine in two different power configurations, BMW Blog reports.

It is reported that the 3.0-cylinder engine is dubbed the B58M1 in standard guise and the B5801 in range-topping form and will power the M40i. The entry-level engine will deliver approximately 335 hp while the tweaked version is expected to have 385 hp on tap.

The reason for the different engine outputs is quite simple. The more powerful version will be built for countries without tight EU emissions regulations, including the U.S. Meanwhile, the 335 hp mill should be offered elsewhere.

As no new-age BMW Z4 M is believed to be on the cards, the M40i will be the most powerful Z4 offered to customers. Joining it will be a base 2.0-liter four-cylinder with about 180 hp and 200 lb-ft of torque and a slightly tweaked version with 248 hp and 258 lb-ft.

BMW recently previewed the new Z4 with a stunning concept at the Pebble Beach Concours d’Elegance.


  • Six_Tymes

    “be on the cards” proper term/phrase should read IN the cards, not on.

    • I suppose it could actually be both, as the card itself displays the information.

  • Blade t

    Looks pretty nice so far….

  • SteersUright

    The 180hp version shouldn’t even be offered in a “premium” sports car, such low power only makes sense for Miata/BRZ price range and very lightweight sports cars. BMW’s are almost never very light weight. Also, the 385hp version should’ve been over 400hp given todays hp standards with Mustangs putting out 460hp in regular GT’s and, to put more space between it and the 335hp version.

    • eb110americana

      You don’t need crazy horsepower to make a good car. Just because everyone is making ridiculous numbers these days, it doesn’t mean we need to take everything into what would have been supercar territory in the 1990s. The original RT/10 Viper roadster made all of 400 horsepower from an 8L V10 and at 3,300 Lbs. was considered recklessly overpowered in its day. Almost all of the great British roadsters of yore (to which this BMW and all Miatas owe their lineage) were lighter, but made well under 100 hp. I’m sure that even the 180 hp one will be a fun runabout, and the 385 hp model will be pushing the limits of traction at anything below freeway speeds.

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