Has the Porsche Taycan's brother-from-another-mother - the Audi RS e-tron GT - come into the super saloon class and ripped up the rulebook entirely? To find out, here's Chris Harris testing it against the very car that *invented* the class, the BMW M5. And it's not your boggo £102,000 BMW M5 Competition. No, it's the £140,000 BMW M5 CS with extra horsepower and bronze trim.

Which car sparks more joy for you?

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