In another major step forward for its EfficiencyDynamics program, BMW is bringing four-cylinder engines back to its U.S. lineup, starting with the dynamic and efficient Z4 sDrive28i.

Of course, as one would expect from a company like BMW, the dramatically designed roadster won’t boast just any four-cylinder engine. Beneath the Z4′s long hood will be a TwinPower forced-induction 2.0-liter I4 that leverages:

• High-pressure direct-injection that increases efficiency through precise control of the fuel supply, clean and homogenous combustion, and a high combustion ratio
• The automaker’s hallmark VALVETRONIC intake control technology, which leverages seamlessly variable intake valve-lift control for a faster response and reduced pumping losses
• A single twin-scroll turbocharger for optimal performance and no delays in throttle response

The result is a sophisticated engine that delivers significantly more power—and notably better fuel efficiency—than the naturally aspirated six-cylinder engine found in today’s BMW Z4 sDrive30i.

Specifically, the four-cylinder Z4 sDrive28i will provide 240 maximum hp, which will be available at 5,000 rpm—1,500 rpm lower than in the Z4 sDrive30i—and 260 lb.-ft. of peak torque at 1,250 rpm—also 1,500 rpm lower. Further, while EPA ratings aren’t yet available, the I4 Z4 is expected to offer 20 percent better fuel efficiency when fitted with a new BMW eight-speed automatic transmission. And remember, the bigger-engined car already gets an impressive EPA rating of 28 mpg highway.

The new BMW Z4 sDrive28i will reach U.S. BMW centers beginning this fall.

With the BMW X6 being extremely popular in Austrailia, there may just be a smaller version, the 2011 BMW X4 that could possibly be in production for the next upcoming years. BMW has increased sales, which has brought even more success to the company because of this luxury and sporty SUV. If the X6 is already at the top of your list for best look and top of the line features, then the BMW X4 would be the perfect match for customers. Plus, it may just be more affordable.

How do you think automakers will design the 2011 BMW X4? A reported unkown source reveals, “the success of the X6 shows there is a continued demand for sportyoff-roaders.”  Sources tell us the new vehicle will be a redesign of the BMW X3 SUV. This vehicle might just resemble the 2000 X-coupe concept because of its upscale exterior details. It will definitely exceed its high safety standards as you drive this adventurous vehicle.

With BMW producing so many impressive vehicles, there is no doubt this company will make the newest X4 even better. Driving the 2011 BMW X4 most likely will be the new trend for these next years. For now, people will have to anticipate its arrival!

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Check back for more news about the 2011 BMW X4 here on this blog soon!