Which is quickest – a Porsche Panamera Turbo S, or a BMW M5 CS? Well, it’s time to find out!

First off, let’s see how these two beasts compare. Starting with the M5 CS, it’s powered by a 4.4-litre twin-turbo V8 that can put down 635hp and 750Nm of torque. As you’d expect, it powers all four wheels and it tips the scales at 1,825kg. All that power doesn’t come cheap, though – it’ll set you back around £141,000!

Next up we have the Porsche. It’s packing a 4-litre twin-turbo V8 under the bonnet that’s good for 630hp and 820Nm of torque. It’s heavier than the BMW, though, at 2,080kg. However, it’s also ever so slightly cheaper, at around £140,000.

So the Porsche is down on power and up on weight, so it’ll be an easy win for the BMW, right? Well don’t forget that Porsches launch SO well! Either way, there’s only one way to find out what’ll happen… LET’S RACE!