Master Muscle

At 395bhp, the 2.5-litre inline five makes twice the power of an original ’80s 10-valve Quattro. And twice as much noise, based on our ears’ findings, though the fitment of a particulate filter means this engine is less vocal than when first unleashed in the TT a few years ago. It’s backed by a twinclutch transmission that’s lightning fast up the ’box but occasionally leaves you hanging on downchanges.