2026 Mercedes-Benz GLS: What's New, Specs & Features
Last updated August 4, 2026
The 2026 Mercedes-Benz GLS is a carryover with no major changes. It keeps the same basic lineup and features as the 2025 model.
About the 2026 Mercedes-Benz GLS
3rd generation GLS (X167), introduced for 2020; 2026 is a post-refresh year following the 2024 update.
Mercedes-Benz positions the GLS as its full-size three-row luxury SUV: a family vehicle with real space for adults, a plush ride, and a long list of premium tech and comfort features. The key message is “Three rows, all in first class,” which fits the model well. Compared with rivals, the GLS leans into a smooth air-suspension ride, rich cabin presentation, strong gas-engine performance, and a true luxury feel even when all three rows are in use.
The GLS 450 is the core three-row luxury SUV, with a turbocharged inline-six, standard all-wheel drive, adaptive air suspension, two 12.3-inch screens, and wireless Apple CarPlay and Android Auto. The GLS 580 adds a twin-turbo V8 and more cabin comfort, including massaging front seats and five-zone climate control.
2026 Mercedes-Benz GLS specs and features by trim
| Feature | ||
|---|---|---|
| Engine | 6-Cyl, Turbo, 3.0 Liter w/EQ Boost | V8, Twin Turbo, 4.0 Liter w/EQ Boost |
| Transmission | Automatic, 9-Spd 9G-Tronic | Automatic, 9-Spd 9G-Tronic |
| Drivetrain | AWD | AWD |
| Fuel Type | Gas | Gas |
| MPG City | 19 mpg | 14 mpg |
| MPG Highway | 24 mpg | 20 mpg |
| Horsepower | 375 hp | 510 hp |
| Torque | 369 lb-ft | 538 lb-ft |
| Max Towing | 7700 lb | 7700 lb |
| Trunk/Cargo | 84.7 cu-ft | 84.7 cu-ft |
| Rear Legroom | 34.6 in | 34.6 in |
| Doors | 4 | 4 |
Frequently asked questions
What changed on the 2026 Mercedes-Benz GLS?
The 2026 Mercedes-Benz GLS has no major product changes. The GLS 450 and GLS 580 carry over with the same basic engines, design, safety equipment, cabin technology, and three-row layout as in 2025.
Is the 2026 Mercedes-Benz GLS redesigned?
No, the 2026 Mercedes-Benz GLS is not redesigned. It remains part of the third generation introduced for 2020 and follows the update made for 2024.
Is the 2026 Mercedes-Benz GLS meaningfully different from the 2025 model?
No, the 2026 Mercedes-Benz GLS is not meaningfully different from the 2025 model. For a used-vehicle shopper, condition, mileage, service history, and equipment are likely to matter more than the model-year change.
How do the 2026 GLS 450 and GLS 580 differ?
The 2026 GLS 450 uses a turbocharged inline-six and covers the core luxury and family features, while the GLS 580 has a twin-turbo V8 plus added comforts such as massaging front seats and five-zone climate control. Both have three rows, standard all-wheel drive, adaptive air suspension, and two 12.3-inch screens.
Does the 2026 Mercedes-Benz GLS still have three rows and standard all-wheel drive?
Yes, the 2026 Mercedes-Benz GLS retains a three-row cabin and standard all-wheel drive. The GLS 450 also has a power-adjustable second row and a power-folding third row.