Question 1

Is the Mercedes-Benz GLS 450 reliable?

Accepted Answer

The Mercedes-Benz GLS 450 has 170 total NHTSA complaints across 6 model years. The most reliable years are 2023 (16 complaints), 2024 (20 complaints), 2018 (20 complaints). Years to avoid: 2020 (64 complaints), 2022 (27 complaints).

Question 2

What years of the Mercedes-Benz GLS 450 should I avoid?

Accepted Answer

Avoid the 2020, 2022 Mercedes-Benz GLS 450. The 2020 model has the most complaints (64) with the top issue being ELECTRICAL.

Question 3

What is the best year for the Mercedes-Benz GLS 450?

Accepted Answer

The best years for the Mercedes-Benz GLS 450 are 2023 (16 complaints), 2024 (20 complaints), 2018 (20 complaints). These years have the fewest reported issues to NHTSA.

Year	Complaints	Top Issue	Verdict
2024	20	this concerns the rear view camera..it operates sp...	Above Average
2023	16	This is [XXX], a Mercedes customer who purchased a...	Excellent Reliability
2022	27	The car radar system apparently had a glitch and l...	Below Average
2020	64	WHILE DRIVING THE VEHICLE, A SERIES OF ELECTRICAL ...	Avoid This Year
2019	23	BACKUP SAFETY ALERT SYSTEM DESIGN IS INADEQUATE. ...	Average
2018	20	I TOOK THE CAR TO THE SERVICE 3 TIMES IN 4 MONTHS....	Above Average

Mercedes-Benz GLS 450 — All Years

Mercedes-Benz GLS 450 — NHTSA Complaints by Year

Best Years to Buy

Years to Avoid