Compare the 2026 Mercedes-Benz GLS in Harlingen, TX
Shopping for a 3-row luxury SUV in the Rio Grande Valley means weighing your options carefully, and the 2026 Mercedes-Benz GLS proves itself the standout choice time and time again. Blending commanding V8 performance with first-class comfort, the 2026 GLS delivers a driving experience that rivals like the Lexus GX struggle to equal.
Whether you're cross-shopping the 2026 Mercedes-Benz GLS vs. Lexus GX or simply searching for the best luxury SUV for your family, our team at Mercedes-Benz of Harlingen, A Bert Ogden Dealership, is here to help you compare the details that matter.
As part of the Bert Ogden Auto Group, the largest auto group in the RGV, we make luxury ownership straightforward. Read our full comparison below, then visit our showroom for a personalized test-drive.
Compare 2026 Mercedes-Benz GLS Pricing
When evaluating overall value, platform and class matter. The 2026 Lexus GX is built on a midsize, body-on-frame truck platform designed primarily for off-road trails. In contrast, the 2026 Mercedes-Benz GLS in Harlingen carries a starting MSRP of $90,250 and delivers a full-size, unibody flagship design.1
While entry-level Lexus GX grades start at lower price points, achieving comparable cabin technology, real leather upholstery and interior quietness requires upgrading to top-tier GX trims that approach 2026 GLS pricing.
When you factor in standard high-end features and superior passenger space, the 2026 GLS delivers true full-size flagship luxury. Bert Ogden Makes It Easy to explore pricing and financing on this new Mercedes-Benz SUV near Mission.
2026 Mercedes-Benz GLS Warranty Coverage Comparison
Peace of mind comes standard with the 2026 Mercedes-Benz GLS. Every model is backed by a 4-year/50,000-mile New Vehicle Limited Warranty,2 matching the coverage offered by Lexus while pairing it with the legendary durability Mercedes-Benz is known for.
Beyond the factory warranty, the 2026 GLS also earned recognition from Car and Driver, which praised its blend of muscular power, upscale cabin materials and refined ride quality -- attributes that keep this model at the top of its class. When you buy a 2026 GLS in Harlingen, you're investing in a vehicle engineered to reward you for years to come.
2026 Mercedes-Benz GLS
- New Vehicle Warranty 2: 4-Year/50,000-Mile
2026 Lexus GX
- New Vehicle Warranty 2: 4-Year/50,000-Mile
Compare 2026 Mercedes-Benz GLS Performance & Specs
Under the hood, the 2026 Mercedes-Benz GLS delivers smooth, responsive performance tailored for daily commuting and highway cruising. The 2026 GLS 450 features a 3.0-liter turbocharged engine with mild hybrid drive, producing 375 horsepower and launching from 0-60 mph in 5.8 seconds, outpacing the Lexus GX 550 twin-turbo V6 (6.5 seconds). Looking to outfit your ride with a V8 engine? Only the 2026 GLS has such an offering.
Ride quality is where Mercedes-Benz truly separates itself. A standard AIRMATIC® air suspension continuously adapts to changing road conditions across the Rio Grande Valley, absorbing road imperfections and eliminating body roll. The rigid body-on-frame structure of the Lexus GX transfers significantly more road vibration into the cabin.
Efficiency is another clear win. Thanks to its advanced mild-hybrid powertrain, the 2026 GLS mpg ratings outperform the GX.
2026 Mercedes-Benz GLS
- V8 Engine: Available
- Mild Hybrid Technology: Standard
- Standard Suspension System: AIRMATIC® Air Suspension
- 0-60 MPH (sec.): 5.8
- Combined MPG Ratings: 21
2026 Lexus GX
- V8 Engine: N/A
- Mild Hybrid Technology: N/A
- Standard Suspension System: Four-Link w/ Coil Springs
- 0-60 MPH (sec.): 6.5
- Combined MPG Ratings: 17
Compare 2026 Mercedes-Benz GLS Dimensions & Features
Inside, the 2026 Mercedes-Benz GLS sets the benchmark for full-size 3-row luxury SUVs in the RGV. Built on a larger full-size platform, it provides adult-friendly legroom across all three rows, making it a genuine long-distance cruiser. Fold the rear seats flat and the 2026 GLS offers 84.7 cubic feet of maximum cargo space, out-measuring the Lexus GX cargo capacity of 76.9 cubic feet.
Every interior detail reflects true flagship luxury. The 2026 GLS features a standard 13-speaker Burmester® Surround Sound system, whereas base Lexus GX trims rely on a 10-speaker stereo. What's more, the intuitive Mercedes-Benz User Experience (MBUX) system includes natural voice control and available augmented reality navigation.
Parking and tight maneuvers around town are effortless thanks to the standard 360-degree Surround View System, delivering peace of mind for those who opt for a 2026 Mercedes-Benz GLS vs. Lexus GX near Mission.
2026 Mercedes-Benz GLS
- Maximum Cargo Space (cu. ft.): 84.7
- Infotainment System: Mercedes-Benz User Experience (MBUX)
- Standard Audio System: 13-Speaker Burmester® Surround Sound System
- 360-Degree Surround View System: Standard
2026 Lexus GX
- Maximum Cargo Space (cu. ft.): 76.9
- Infotainment System: Lexus Interface
- Standard Audio System: 10-speaker Lexus Premium Sound System
- 360-Degree Surround View System: Available
Test-Drive a 2026 Mercedes-Benz GLS Near Mission, TX
Ready to experience everything the 2026 Mercedes-Benz GLS offers? Contact Mercedes-Benz of Harlingen to schedule your personalized test-drive today. Our knowledgeable team will walk you through every trim, feature and financing option so you can drive home in the luxury SUV that fits your lifestyle.
Don't settle when you can upgrade to the 2026 GLS -- proudly backed by the largest auto group in the Rio Grande Valley. Bert Ogden Makes It Easy to find your perfect Mercedes-Benz near Mission.
1 Information accurate at time of publishing. See dealer for details.
2 See dealer for details.
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2026 Mercedes-Benz GLS Comparison FAQs
How much does the 2026 Mercedes-Benz GLS cost?
The 2026 Mercedes-Benz GLS carries a starting MSRP of $90,250 at Mercedes-Benz of Harlingen.1 To explore competitive pricing, luxury features and financing options on this flagship 3-row luxury SUV near Mission, visit our showroom or contact our finance team today.
Is the 2026 Mercedes-Benz GLS better than the Lexus GX?
The 2026 Mercedes-Benz GLS provides superior full-size luxury, featuring a standard mild-hybrid powertrain that goes 0-60 mph in 5.8 seconds, A standard AIRMATIC® air suspension and up to 84.7 cubic feet of maximum cargo space. By comparison, the Lexus GX requires 6.5 seconds to go from 0-60 mph and offers 76.9 cubic feet of cargo room.
Does the 2026 Mercedes-Benz GLS offer a V8 engine?
Yes, the 2026 Mercedes-Benz GLS offers an available V8 engine option for drivers seeking muscular performance across the Rio Grande Valley. The Lexus GX does not offer a V8 engine option.
What is the warranty coverage on a 2026 Mercedes-Benz GLS?
Every 2026 Mercedes-Benz GLS purchase at Mercedes-Benz of Harlingen includes a 4-year/50,000-mile New Vehicle Limited Warranty for total peace of mind on Texas roads.
Where can I test-drive a 2026 Mercedes-Benz GLS near Mission, TX?
You can schedule a personalized test-drive by visiting Mercedes-Benz of Harlingen, A Bert Ogden Dealership, located near Mission. Contact our luxury vehicle specialists today to explore available 2026 GLS inventory.