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BMW Z4 Roadster
First turbo four model will arrive this fall

Earlier this year, we reported that BMW's normally aspirated inline-6 engines will be ushered out and replaced by a new family of turbocharged four-cylinder engines. BMW today confirmed that four-cylinder power would return to U.S.-bound BMWs after a 10+ year absence. 

The first model to get BMW's new 2.0-liter TwinPower Turbo four-cylinder engine will be the Z4 sDrive28i Roadster (say that five times fast). The engine develops 240 hp and 260 lb-ft of torque (30 percent more torque at 1,500 fewer RPMs than the naturally aspirated 3.0-liter inline-6).

BMW says that the new turbo four will be 20 percent more fuel efficient than the inline-6 when paired with the 8-speed automatic transmission. We're sure that there are fuel efficiency gains to be made with the 6-speed manual transmission as well, but it's likely nowhere near 20 percent (or else BMW would have mentioned it in the press release).

The Z4 sDrive28i Roadster will arrive in showrooms this fall, and the turbo four will likely filter down to other BMW models soon after.



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RE: Just wish it ran on regular
By YashBudini on 4/19/2011 1:11:32 PM , Rating: 2
The answer is not torque steer, the car could be programmed to make use of the octane at higher revs, much like it limits boost at lower revs now.

Actually the answer lies in a prior DT article, the one where customers have almost zero knowledge of how hybrids work. Years later the engines idled accordingly.

Your car's "position" on premium fuel is based on demograpghics. The average buyer is "cheap". The $$$ and effort is not cost effective in your segment. They certainly can't require premium fuel, the cheap customer would try to cheat on any account. The amount of drivers who would spring for premium is low, and the whole idea of less power with low grade gas can seem insulting if you're not technically aware.

GM didn't understand this cheap business when it released the Vega with solid lifters. No cheap customer was even going to read the manual, let alone perform regular valve adjustments.

IE, Hyundai has indirectly insulted your intelligence, lumped you into with the crowd.


RE: Just wish it ran on regular
By YashBudini on 4/19/2011 1:35:05 PM , Rating: 2
quote:
Years later the engines idled accordingly.


Sorry, wanted to put this sentence last after the Vega business.


RE: Just wish it ran on regular
By YashBudini on 4/19/2011 1:37:24 PM , Rating: 2
quote:
lumped you into with the crowd.

Here the brain is processing 2 similar sentences in parallel with 1 result. Duh.


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