The quickest Renault Mégane RS yet has been leaked onto the internet again ahead of its official reveal - but this time it's pictures of the engine and interior.

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2017 Megane Renault Sport revealed

Posted onto Ferdfanpage's Facebook page, they show the car's new engine - believed to be a turbocharged 1.8-litre four-cylinder petrol unit with close to 300bhp - as well as its sports seats and touchscreen infotainment.

The images follow an earlier leak of the car completely undisguised and official patent images, which all show the same design.

The images show that the upcoming hot hatch will only look slightly more aggressive than the regular Mégane range, which comes as no surprise, following comments made to Autocar by brand design boss Stéphane Janin earlier this year.

"Our brand is not about aggressivity," he said. "We try to have a powerful product but rather simple with sensual shapes. That's what we tried to make with the next RS, which is actually harder than going aggressive, I think. To find the right balance is harder but I think we have done it."

When it launches later this year, the next Mégane RS will come with a choice of two chassis settings and four-wheel steering. The standard model will use a Sport chassis, which will be a softer, more road biased set-up. But buyers will be able to opt for a harder Cup chassis, which will be catered towards track use.