Ariel’s new Atom 4RR is an extreme 25th anniversary special

Published: 03 July 2025

► New Ariel Atom 4RR revealed
► Track-focused version celebrates 25 years of Atom
► Uses extreme 525bhp Honda engine

Ariel has wheeled out the candles and party poppers, celebrating 25 years of the Ariel Atom with this: the 4RR. Just 25 will be made.

It’s the most extreme and most powerful version of the Atom yet (even topping the wild V8 version), and uses a 525bhp 2.0-litre turbo from Honda. Ariel has managed to squeeze so much power out of the four-cylinder by overhauling and strengthening many of the engines components and improving its oil and cooling systems.

The structure and aerodynamics build on the already hot 4R, with Ariel calling this a ‘track-focused’ (and therefore not ‘track-only’) model. More technical specs will be revealed later in 2025.

Ariel as we currently know it has been around since 2000 when the first Atom launched. The extreme and clean-sheet sports car found a niche and enthusiastic crowd – and was no doubt propelled into many a car enthusiast’s consciousness (including mine) by a certain car journalist-turned farm owner in the early 2000s.

Since then, Ariel has constantly evolved the Atom – usually by upping the power of the Honda engines it’s always used. The general structure has hardly changed, though, with Atoms (and the off-road Nomads that have come since) still proudly looking like scaffolding with wheels attached.

Those 25 owners, then, are getting the most extreme Atom yet. Lucky them.

By Jake Groves

CAR's news editor; gamer, trainer freak and serial Lego-ist

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