Autocar just posted a video, see here:
https://www.autocar.co.uk/car-video/...s-ariel-atom-4
It is no faster than a supercharged Ariel Atom 3 (300hp):
https://www.caranddriver.com/reviews...pecialty-file/
Autocar says they went into the data and took out the driver's reaction time, so I don't think the testing procedure advantages the Atom 3. You might say the pavement surface is worse in the Autocar test but if that were true it would only impact the 0-60 time and we see the Atom 4 lagging from 60 mph to 100 mph. To me it seems like the Atom 3 is quicker under 100 mph. The Atom 4 is a bit quicker after 100 mph and almost catches up by the quarter mile. The tires on the Atom 3 are also likely much worse since they are a 10 year old design. I still think the Atom 3 is a better choice, mostly comes to the engine choice and that given the 0-60 performance I don't think the Atom 4 puts down power any better. The older K series with less than a third the boost in a lighter chassis is a great design.
Zero to 60 mph:
2.9 sec Atom 3
3.01 sec Atom 4
Zero to 100 mph:
6.4 sec Atom 3
6.78 sec Atom 4
Standing ¼-mile:
11.2 sec @ 125 mph Atom 3
11.22 sec @ 126.14 mph Atom 4
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