Large SUV

2021 Mercedes-Benz GLS-Class: problems, recalls and fuel economy

Not rated yet

Owners have filed 52 complaints about the 2021 Mercedes-Benz GLS-Class with NHTSA, and it has 12 recalls. We don't rate it yet: a rating needs sales figures to turn complaints into rates.

Owner complaints

52

filed with NHTSA

Recalls

12

on record

Fuel economy

21 mpg

best version, EPA combined

Fuel, 5 years

$9,714

12,000 mi a year, $3.40/gal

What owners complain about most

Electrical system17
Driver-assist & stability8
Engine & cooling5
Body, glass & interior5

Engines and fuel economy

VersionDriveCombined
Automatic 9-spd, 6 cyl, 3.0 L4-Wheel Drive21 mpg
Automatic 9-spd, 8 cyl, 4.0 L4-Wheel Drive18 mpg
Automatic 9-spd, 8 cyl, 4.0 L4-Wheel Drive16 mpg
Automatic 9-spd, 8 cyl, 4.0 L4-Wheel Drive16 mpg

Recalls

Check whether a specific car still has open recalls with its VIN at nhtsa.gov/recalls.

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Other years of the Mercedes-Benz GLS-Class

YearReliability
2027Not rated yet
2026Not rated yet
2025Not rated yet
2024Not rated yet
2023Not rated yet
2022Not rated yet
2021Not rated yet
2020Not rated yet
2019Not rated yet
2018Not rated yet
2017Not rated yet

Questions people ask

What problems does the 2021 Mercedes-Benz GLS-Class have?

Owners have filed 52 complaints with NHTSA: electrical system (17), driver-assist & stability (8), engine & cooling (5). We don't rate it yet, so this count isn't a reliability score: popular cars get more complaints.

How many recalls does the 2021 Mercedes-Benz GLS-Class have?

12 recalls on record with NHTSA.

What gas mileage does the 2021 Mercedes-Benz GLS-Class get?

Up to 21 mpg combined (EPA), depending on the engine.