Initially, the Z4 will come with a 2.0 liter four-cylinder TwinPower turbocharged engine sending 255 horsepower and 295 pound-feet of torque to the rear wheels through an eight-speed automatic transmission. Tweaks to the engine's fuel injection system and electronic brain allow this latest 2.0-liter to make 15 more hp and 35 more lb-ft than the previous version. BMW claims it'll do 0-60 in 5.2 seconds.
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