Highs Roaring 603-hp V-8, high-end cabin, technology-laden equipment list.
Lows Transmission could use some polish, bouncy ride, six-figure starting price.
Verdict If you seek S-class luxury and muscle-truck moves, the AMG-tuned GLS63 will satisfy your need for speed.
Overview
With a whopper of a twin-turbo V-8 engine under its hood, the 2022 Mercedes-AMG GLS63 kicks the performance of the standard GLS-class SUV up to an entirely new level. This hot-rod has rivals such as the BMW X7 M50i and the Cadillac Escalade V-series in its crosshairs. A sport-tuned air-suspension is standard and spices up its over-the-road behavior, although it comes with a much stiffer ride. That's not to say the GLS63 isn't luxurious. It's leather-lined cabin is finished with upscale materials, and it’s both spacious and extremely comfortable—at least in the first two rows. A host of tech features comes standard and even more advanced items, such as a semi-autonomous driving mode, are available as options.
What's New for 2022?
The mighty GLS63 is largely unchanged for 2022. We were worried it wouldn't happen at all this year due to supply chain issues that Mercedes reported were holding up production. But we've confirmed that the GLS63 is back in business and ready to thrill your family with its 603-hp twin-turbo V-8.
Although the GLS63's starting price is deep into the six-figure realm, we'd still suggest a few options sure to please the whole family. For one thing, the Warmth and Comfort package is a nice bundle for those in northern climates, as it adds heated door panels, heated armrests, and a heated center console. We'd also suggest the Energizing package which includes the in-cabin fragrance diffuser and the Acoustic Comfort package, and also adds increased cabin insulation for a quieter interior. Mercedes-AMG also offers a host of standalone features that may catch your eye, including the bonkers 23-inch multi-spoke forged wheels that look just perfect when framed within the GLS63's muscular wheel wells.
Engine, Transmission, and Performance
Under the hood of the GLS63 is a twin-turbocharged 4.0-liter V-8 engine that makes a whopping 603 horsepower with the help of a 48-volt hybrid system. All-wheel drive is standard, as is a nine-speed automatic transmission and air suspension. We were blown away by the 2021 GLS63's performance at our test track as it out-accelerated several hot sports cars we've tested recently, tearing off a blistering 3.6-second zero-to-60-mph run. For comparison, the old GLS63—which made a mere 577 horsepower—managed a none-too-shabby 4.3-second zero-to-60-mph run. As impressed as we were with the GLS's acceleration, we can't say the same for its driving dynamics. The ride is firm, especially on the optional 23-inch wheels, but that firmness doesn't translate to a feeling of precision when cornering. ...