Mercedes-Benz GLS-Class reliability by year
0 recalls and 185 owner complaints across 7 model years. Best year to buy: 2018. Year to avoid: 2021.
Worst model years to avoid → — the single year to avoid for every model line we track, ranked side by side.
At-a-glance: every year color-coded
Each cell shows the last two digits of the model year and its 0–10 reliability score from NHTSA data. Click any year to see the full record. ★ best year · ✕ year to avoid.
Year-by-year reliability 7 model years · newest first
Common trouble spots across the GLS-Class aggregated across 7 model years
Common questions
What's the best year to buy a Mercedes-Benz GLS-Class?
Based on NHTSA complaint volume and severity weighting, the 2018 Mercedes-Benz GLS-Class scores 8.6/10 — the strongest in the 2017–2023 range. 21 complaints on file, 0 active recalls. Reliability scores reflect the federal complaint record, not subjective owner reviews.
Which Mercedes-Benz GLS-Class year should I avoid?
The 2021 Mercedes-Benz GLS-Class scores 8.2/10 — the weakest in the lineup. 36 owner complaints with NHTSA, 0 active recalls. That doesn't mean every 2021 is a problem — it means failure rates run higher than peer model years on the same platform.
Which years of the Mercedes-Benz GLS-Class should I avoid?
No Mercedes-Benz GLS-Class model year currently rises to an "avoid" or "high-risk" verdict on the NHTSA data — either the record is clean or sample sizes are still too thin for a confident call. The year-by-year breakdown below shows what's on file regardless.
How many years of the Mercedes-Benz GLS-Class are tracked?
7 model years (2017 through 2023) with NHTSA records on file. Total across the lineup: 0 recalls and 185 owner complaints.
What's the most-reported problem on the Mercedes-Benz GLS-Class?
electrical is the most-reported category — 41 complaints across 4 model years. Average shop repair runs about $850.