2020 Mercedes-Benz GLS-Class problems and recalls

47% of owner complaints on the 2020 Mercedes-Benz GLS-Class related to the Electrical System (18 of 38).

38
Complaints
0
Recalls
3
Crash reports
1
Fire reports
3
Injuries
74.6
Severity index

Severity index 74.6 Medium. The index weights crashes, fires, injuries and fatalities per 100 complaints. How it is calculated.

Middle half of all tracked vehiclesThis vehicle: 74.6p25 46p75 80cleanestworst
Severity index against the quartile range for all tracked vehicles.

Components cited in complaints

Electrical SystemElectrical System: 18 complaints (47.4%)18 47%EngineEngine: 9 complaints (23.7%)9 24%Fuel/Propulsion SystemFuel/Propulsion System: 8 complaints (21.1%)8 21%Forward Collision Avoid…Forward Collision Avoidance: 7 complaints (18.4%)7 18%Unknown Or OtherUnknown Or Other: 4 complaints (10.5%)4 11%Power TrainPower Train: 4 complaints (10.5%)4 11%Air BagsAir Bags: 2 complaints (5.3%)2 5%Visibility/WiperVisibility/Wiper: 2 complaints (5.3%)2 5%
A single complaint can cite more than one component, so shares total over 100%.
ComponentComplaintsShare of complaints citing it
ELECTRICAL SYSTEM1847.4%
ENGINE923.7%
FUEL/PROPULSION SYSTEM821.1%
FORWARD COLLISION AVOIDANCE718.4%
UNKNOWN OR OTHER410.5%
POWER TRAIN410.5%
AIR BAGS25.3%
VISIBILITY/WIPER25.3%

Complaints filed per year

0482020: 32021: 52022: 42023: 32024: 82025: 82026: 7 (partial year)202122232482526
Complaints by the calendar year they were filed. The hatched bar is the current year to date.
YearComplaints
20203
20215
20224
20233
20248
20258
2026 (year to date)7
Filings in 2023 to 2025 ran 1.6x those in 2020 to 2022 (19 against 12).

Other Mercedes-Benz GLS-Class model years

Severity index for every other model year on file. Compare all 6 years side by side.

Source. NHTSA public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-07-25. Complaints are unverified consumer reports. Totals vary with units sold and years on the road. Not affiliated with NHTSA or any manufacturer.