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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