Avoid: No year grades F. Weakest: 2021
Best: 2023
7 model years of NHTSA owner complaints and recalls · How we grade
Across 9 model years, the Mercedes-Benz GLS has 222 owner-filed NHTSA complaints and 1 recall on record. The most-reported areas are electrical system and engine. 2017 drew the most complaints (42), 2023 the fewest of the years on the road 3+ years (10).
Source: NHTSA complaints and recalls filed for Mercedes-Benz GLS vehicles (US, public record). Typical used asking price $22,638–$45,508.
Complaint volume by model year. Raw NHTSA totals, not adjusted for sales volume or time on the road, so older and higher-selling years accumulate more. Every year links to its full breakdown.
Highest: 2017 (42 complaints). Lowest: 2023 (10).
Sentiment is sharply divided and heavily dependent on ownership phase and powertrain.
Very frequent reports of routine dealer service visits costing $1,800-$2,200, with major repairs like air suspension or differential failure costing $5,000-$30,000.
Described as a "common" point of failure leading to very expensive repairs ($2,250 minimum, often $5,000+).
Rear tires last 15,000-20,000 miles; brake pads require frequent replacement; cited as an almost annual expense.
Noted as "normal" at higher mileage, requiring topping off between services.
Mentioned as a recurring problem area.
Owner insights cover all generations of the GLS. Individual model years are broken down above.
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