2021 Mercedes-Benz GLS: common problems and reliability
One of the weaker GLS years.
37 owner complaints, most about electrical system. No recalls.
Should I buy a 2021 GLS?The 2021 Mercedes-Benz GLS has 37 owner-filed NHTSA complaints and 0 recalls on record. The most-reported areas are electrical system and engine.
Safety record for the 2021 model year
Source: NHTSA complaints and recalls filed for 2021 Mercedes-Benz GLS vehicles (US, public record).
The Year Score compares this year with other GLS years only. How we score it
Is 2021 a good year for the GLS?
Across the 9 GLS model years we track, complaint volume runs from 10 (2023) to 42 (2017). With 37 complaints, the 2021 GLS sits above the model's median of 22.
These are raw NHTSA complaint totals, not adjusted for how many cars sold or how long each model year has been on the road. Older and higher-selling years accumulate more complaints.
Where owners report problems
What owners say across generations
Sentiment is sharply divided and heavily dependent on ownership phase and powertrain.
Owner insights cover all generations of the GLS. See the full GLS owner picture and every model year.
Typical used price
Used GLS listings typically run $22,638–$45,508.
Other GLS model years
Compare every GLS year side by side to see how 2021 ranks against the rest.
Compare the GLS against its rivals
Looking at a specific car?
We're building a full check by VIN: the exact trim and engine, its known problems and recalls, what to inspect, a fair price, and how it compares with its rivals. Get an email when it's ready.
One email when it launches. Unsubscribe any time. Privacy