Smaller engines, reduced aero and heavier cars. It doesn't sound like a recipe for a great Formula 1, but there's more to it than that.
The torque of the 1.6-litre turbos and the increased power from the regenerative systems means the 2014 cars are a handful. And fun, according to some of the drivers.
AUTOSPORT has gathered together the thoughts and feelings of some of those who have given the cars their first on-track miles at Jerez this week, tackling the main themes that have developed so far.
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Kevin Turner is the editor of Autosport magazine, having previously been the editor of sister publication Motorsport News. He joined the magazine in 2006 after writing club race reports as a freelancer while studying history at the University of York. He has also covered international events for both the magazine and the website, including the Le Mans 24 Hours. Kevin covered the British Touring Car Championship from 2011 to '14 and has a keen interest in the historic racing scene. He lives in Fleet with his wife and two children.@KRT917 More features by Kevin Turner