We should see these range-topping performance SUVs soon.

We have some fresh spy video shot by Automotive Mike on YouTube, and we’re treated to a completely naked shot of the range-topping Mercedes-AMG GLE 63 Coupe turning laps at the Nürburgring (featured above). It’s not a grand surprise since Mercedes revealed the new GLE Class Coupe at the end of August, but we are given a good look the 63’s minor differences front and rear. If that's not enough high-performance AMG action for you, there’s a second spy video (below) that captures the smaller GLB 45 also hammering around the Green Hell.

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We’ll start with the GLE 63, captured both in coupe and its traditional SUV format. The new GLE-Class Coupe is really new, with the standard model and the GLE 53 making an online debut nearly a month ago. The lower-spec AMG variant packs a lowered suspension, sportier looks, and a tweaked version of Merc’s boosted 3.0-litre V6 good for 429 bhp. The GLE 63 is a different animal, however, as it should wield AMG’s 4.0-litre twin-turbo V8 good for upwards of 550 bhp. The same goes for the standard GLE 63, which is also captured on video. Judging by the sounds we hear from the quad exhaust pipes, there should definitely be a V8 thumping away under the bonnet.

Gallery: Mercedes-AMG GLE 63 spy screenshots

The second video focuses on a lightly camouflaged GLB 45, tossing its smaller frame through the ‘Ring's corners with reckless abandon. Similar to the GLE Coupe, the less-powerful AMG GLB 35 variant was recently revealed ahead of the Frankfurt Motor Show but the GLB 45 will be the range-topper. Unlike the GLE 63, the smaller SUV won’t get a V8 but that doesn’t mean it will be underwhelming. We expect AMG will use the same 2.0-litre turbocharged four-pot as the rest of the GLB line, but tuned to as much as 416 bhp similar to what’s offered in the A45 S hot hatchback.

As for when these models will debut, we expect both are just around the corner. Look for a reveal late this year – possibly around the Los Angeles Auto Show – or early in 2020 for the 2021 model year.

Gallery: 2021 Mercedes-AMG GLB 45 spy screenshots