2026 Mercedes-Benz GLS-Class Spied With Second Update

Mercedes-Benz is working on an update for the GLS-Class, the second for the full-size SUV.
 

The current GLS-Class arrived for the 2020 model year and was given a mild update for 2024. This second update, which will likely be introduced for the 2027 model year, will be more substantial, judging by the camouflage gear on recently sighted prototypes.
 
The prototype is for an updated version of the regular GLS-Class. Also out testing are prototypes for the updated Maybach GLS-Class and updated AMG GLS 63. There’s likely an entirely new front end hidden under the camouflage, including a new grille and a new fascia. The lights are also new at both ends, and they now feature tiny Mercedes star logos like on other recent additions to the automaker’s lineup.
 

It isn’t clear what Mercedes has planned for the mechanical components. New plug-in hybrid powertrains are possible, particularly for the fire-breathing AMG GLS 63. And the regular GLS-Class may lose its available V-8, just like the updated 2025 G-Class which only offers a V-8 in AMG G 63 guise.
 
The GLS-Class is currently available with a turbocharged 3.0-liter inline-6 rated at 375 hp in a base GLS 450 model. Further up is a GLS 580 with a twin-turbocharged 4.0-liter V-8 rated at 510 hp. The Maybach GLS 600 has the same engine as the GLS 580, but with a 550-hp rating. And at the top of the range is the AMG GLS 63 with a unique twin-turbocharged 4.0-liter V-8 rated at 603 hp. All models come with a 48-volt mild-hybrid system, a 9-speed automatic, and all-wheel drive.
 

Mercedes doesn’t typically update its vehicles more than once during a product cycle, but the second update will help keep the GLS-Class fresher for longer, as Mercedes plans to keep some of its current gas vehicles on sale for longer than originally planned. The reason is slower than expected demand for electric vehicles. Mercedes was planning to go the full-electric route by 2030, but the automaker last year said it will keep selling vehicles with gas engines beyond that date.
 
A second facelift is also coming for the smaller GLE-Class around the same time as this facelift for the GLS-Class.