The 2020 Mercedes-Benz GLS is a full-size three-row luxury SUV designed to deliver S-Class-level comfort with family-friendly space and modern tech. For 2020, the GLS entered a new generation (X167 redesign), bringing a larger cabin, updated infotainment, and more advanced driver assistance features. It’s ideal for buyers who want premium materials, strong towing and highway manners, and genuine adult-usable third-row seating. In the segment, it competes directly with the BMW X7, Audi Q7, and Range Rover, with a focus on refinement and ride quality.

- NEW-GENERATION PLATFORM AND MORE ROOM: The 2020 GLS rides on Mercedes’ latest SUV architecture for this model line, with improved interior packaging, a roomy third row, and a more upscale cabin layout than the prior GLS. - ENGINE OPTIONS AND PERFORMANCE: Most 2020 GLS models are the GLS 450 with a 3.0L turbocharged inline-6 and EQ Boost mild-hybrid assist (strong low-end torque and smooth acceleration). A GLS 580 is also offered with a 4.0L twin-turbo V8 and EQ Boost for added power and effortless passing. - 4MATIC ALL-WHEEL DRIVE: Many 2020 GLS examples are equipped with Mercedes 4MATIC AWD, improving all-weather traction and giving confident stability in rain or light snow conditions. - ADVANCED INFOTAINMENT AND DISPLAYS: MBUX infotainment with dual widescreen displays, voice controls, and available navigation/connected services is a major step up over earlier GLS models and a key reason shoppers search out the 2020 redesign. - LUXURY COMFORT AND TECH OPTIONS: Available air suspension, multiple drive modes, premium audio, panoramic roof, and a long list of driver assistance features help the GLS feel like a flagship SUV when properly equipped.

Shoppers researching 2020 Mercedes-Benz GLS reliability often find that it’s a highly capable SUV, but it can be complex and expensive to repair if problems arise. Here are some 2020 Mercedes-Benz GLS problems and common issues reported by owners and technicians: - ELECTRICAL/INFOTAINMENT GLITCHES: Some owners report MBUX bugs such as screen freezes, camera or sensor alerts, Bluetooth/CarPlay dropouts, or intermittent warning messages. These issues can appear early (sometimes within the first 5,000–20,000 miles) and are often addressed through software updates, battery checks, or module diagnostics. - SUSPENSION AND RIDE-HEIGHT FAULTS: Models equipped with air suspension can experience ride-height warnings, uneven stance, or harshness if a component starts leaking or a sensor fails. While not universal, complaints tend to show up as mileage climbs (often 30,000+ miles), and repairs can be costly depending on whether the issue is a valve block, compressor, strut, or sensor. - ENGINE/DRIVABILITY CONCERNS: On GLS 450/580 models, owners sometimes mention rough starts, hesitation, or intermittent check-engine lights. Causes vary and may include sensors, ignition components, or software calibration; diagnosis matters because symptoms can overlap. - WATER LEAKS AND INTERIOR NOISES: Some reports mention wind noise, sunroof seal concerns, or water intrusion in heavy rain or after car washes. These issues can lead to damp carpets, musty smells, or electrical gremlins if left unresolved.