The Audi RS7 is back, with an extra helping of ‘Performance’!Though you’ll have to be seriously eagle-eyed to spot any visual changes, the real story of this new super saloon lies under the bonnet. With a couple of tweaks to the turbochargers, the RS7 Performance gains 30hp and 50Nm for a total of 630hp and 850Nm.As a result, the claimed 0-60mph figure drops to 3.4 seconds with top speed electronically capped at 189mph. Some tweaks have been made to the chassis to make the most of that additional power, namely some weight savings in the form of reduced sound deadening and the standard inclusion of rear-wheel steering.Inside, you’re met with a familiar interior - albeit with some new stitching options and a little more technology as standard.All this extra goodness comes at a price though, with the Audi RS7 Performance starting at £116,545. That’s almost £20,000 more than before!Is it worth the extra cost? Stick with Mat and find out…Sell your car with carwow: