Electronic steering is replacing hydraulic power-steering in many cars.

ECONOMIST: Rational consumer

No other compact economy car outside of a Mini Cooper offers as much stick-and-rudder fun as the 3: The steering (hydraulic, with an electric pump) is tack-sharp and precise, with almost no torque steer and a gratifying heft that gathers as you turn the wheel.

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E-Steer which eliminates the need for the traditional power-steering system's hydraulic pump, hoses, fluid and belts.

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The M5's adaptive steering system hydraulic and not electric-assist, as in the regular 5 reacts as fine as a bee's wing, firm and exact.

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The disk severed all the plane's hydraulic lines, virtually cutting off all steering and speed control.

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Controlling steering using electric motors also helps to reduce fuel consumption and hence carbon-dioxide emissions. (Electric motors require power only when the steering wheel is turned, whereas a hydraulic pump drains power from the engine all the time.) Ford reckons 90% of its cars will have electronic steering within three years.

ECONOMIST: Rational consumer

Before landing, the flight crew were not aware the nose wheel steering system was not working, as the hydraulic fluid level was low.

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