2018 Mercedes-Benz GLS: common problems and reliability
An average GLS year.
22 owner complaints, most about service brakes. No recalls.
Should I buy a 2018 GLS?The 2018 Mercedes-Benz GLS has 22 owner-filed NHTSA complaints and 0 recalls on record. The most-reported areas are service brakes and suspension.
Safety record for the 2018 model year
Source: NHTSA complaints and recalls filed for 2018 Mercedes-Benz GLS vehicles (US, public record).
The Year Score compares this year with other GLS years only. How we score it
Is 2018 a good year for the GLS?
Across the 9 GLS model years we track, complaint volume runs from 10 (2023) to 42 (2017). With 22 complaints, the 2018 GLS sits about the same as 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 2018 ranks against the rest.
Compare the GLS against its rivals
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