Image: Mercedes-AMGImage: Mercedes-AMGMercedes-AMG has taken a CLE-based V8 coupe to a private Nürburgring session, giving the extreme prototype the Nordschleife to itself as development appears to move toward a reveal.YouTuber Carspotter Jeroen filmed the camouflaged car during the test, with Mercedes running the prototype alone.The car is described as the next entry in Mercedes' ultra-exclusive Mythos series, following the SL-based PureSpeed launched a couple of years ago. However, this model is tied to the CLE rather than the SL, and is expected to use V8 power at a time when the V8-powered AMG C63 is still missing in action.The prototype was seen with stacked exhaust outlets, a large rear wing, and a prominent hood scoop intended to help cool the expected flat-plane-crank V8. Dealers have claimed the car will make well over 600 horsepower-the engine is rumored to produce 650 hp.AdvertisementAdvertisementHowever, Mercedes has not confirmed output, production volume, pricing, or the Mythos name for this CLE-based coupe. Dealers invited to a private meeting in Sindelfingen, Germany, separately claimed Mercedes intends to build only 30 units worldwide. That figure remains unconfirmed.A less extreme CLE 63 Black Series could also follow with a longer production run. In contrast to the winged Mythos-spec prototype, some recent CLE test cars have appeared less aggressive, which could point to a lower-tier Black Series version. Even so, both development paths center on returning V8 power to the CLE range.