Mercedes-Benz GLS reliability: common problems by model year
Across 3 model years, the Mercedes-Benz GLS has 74 owner-filed NHTSA complaints and 0 recalls on record. The most-reported areas are electrical system and engine. 2020 drew the most complaints (38), 2023 the fewest (10).
3
Model years tracked
74
Owner complaints
0
Recalls
26
Median per year
Source: NHTSA complaints and recalls filed for Mercedes-Benz GLS vehicles (US, public record). Typical used asking price $23,950–$81,082.
Which GLS years have the most problems?
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.
Sentiment is sharply divided and heavily dependent on ownership phase and powertrain. The vehicle is universally praised for its core attributes: exceptional ride comfort, often described as "like a magic carpet," spacious and comfortable third-row seating, a
Exorbitant maintenance and repair costs: 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. Frequency: very frequent.
Air suspension failures: described as a "common" point of failure leading to very expensive repairs ($2,250 minimum, often $5,000+). Frequency: very frequent.
Premature tire and brake wear: rear tires last 15,000-20,000 miles; brake pads require frequent replacement; cited as an almost annual expense. Frequency: very frequent.
Engine oil consumption: noted as "normal" at higher mileage, requiring topping off between services. Frequency: recurrent.
Coolant leaks: mentioned as a recurring problem area. Frequency: recurrent.
Owner insights cover all generations of the GLS. Individual model years are broken down above.