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Bentley has given the GT Coupe its famous 6-liter, 12-cylinder engine but teased out more power than before (567 bhp and 516 lb-ft of torque) and added a new Quickshift transmission that allows double downshifting.
FORBES: Bentley Unveils New Continental GT Coupe
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Mazda has not said how much power the consumer version of the new diesel four-cylinder will generate.
FORBES: Mazda Bets Big On Diesel With The All-New 2014 Mazda 6
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Using ethanol fuel, it is possible to make 2 to 2.5 L 4 cylinder engines that have the same or more power than the gasoline V8s currently used in even the largest trucks or SUVs.
FORBES: How to Build a Car that Gets 54.5 MPG
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The silver cylinder at the top is actually a small power generating device that converts micro-vibrations into usable energy, so stick one of these on, say, a ventilation duct and you should just about get enough juice to power a calculator or even an LED.
ENGADGET: Mitsumi exhibits micro-vibration power generator and batteryless RF switch (video)
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The vibe in the Fusion Hybrid is one of abiding integration: the subtle slurring of ratios in the continuously variable transmission, the share-the-load cooperation between electric and gas engine (2.0-liter, 141-hp Atkinson-cycle four-cylinder), a sort of light, transparent flickering of power sources.
WSJ: 2013 Ford Fusion Hybrid Review: Passion Seizes the Family Sedan | Rumble Seat by Dan Neil
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After years of offering only high-power, high-consumption six-, eight-, and 12-cylinder engines, BMW, Land Rover and Mercedes-Benz will start rolling out efficient four-cylinder engines in the United States this year.
FORBES: New Baby Benz a Sign of Things to Come: Efficient Luxury
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Essentially leveraged as a form of high-tech turbocharging, here a small electric motor gives a modest fuel-free power boost to a direct-fuel-injected 2.4-liter four-cylinder engine.
FORBES: Buick Prices 36-MPG 'eAssist' Regal
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But industry buzz is around the success of a turbocharged, six-cylinder Ford engine that uses a fifth less fuel than older, larger V8 engines of similar power.
ECONOMIST: Lexington