Mercedes-Benz GLS450

Owners filed 139 complaints across 6 model years of the Mercedes-Benz GLS450. The 2020 drew the most (36); the 2018 the fewest (14).

Model years6

Complaints139

Recalls49

Fires13

Deaths0

Every Mercedes-Benz GLS450 model year compared

Complaints per year

Year	Complaints	Recalls	Fires	Crashes	Most reported	Status
2021	30	12	2	1	Electrical System	Routine
2020	36	22	1	3	Electrical System	Routine
2019	24	3	1	1	Unknown or Other	Routine
2018	14	3	3	1	Suspension	Routine
2017	35	8	6	1	Electrical System	Routine
2016	0	1	—	—	—	Routine

Which Mercedes-Benz GLS450 years should you avoid?

On raw complaint volume the 2020 is the weakest year on record, with 36 complaints concentrated in the electrical system. It carries 22 recalls.

Read these numbers with sales volume in mind. A model year that sold in huge numbers naturally accumulates more reports than a rare one, and older cars have had more years to fail. The stronger signal is the severity columns and whether the same component keeps coming up year after year.

Data: NHTSA complaint and recall files, September 2026. Complaints are unverified owner reports.