"How reliable is the 2019 Mercedes-Benz Gls 450?"

"Based on 21 NHTSA complaints, the 2019 Mercedes-Benz Gls 450 has a median complaint mileage of 34000 miles. The most common issue is UNKNOWN OR OTHER."

"What are common problems with the 2019 Mercedes-Benz Gls 450?"

"The most frequently reported component in NHTSA complaints for the 2019 Mercedes-Benz Gls 450 is UNKNOWN OR OTHER, accounting for a significant portion of the 21 total complaints filed."

2019 Mercedes-Benz Gls 450: Reliability Data

Source: NHTSA — 21 complaints

Total Complaints

34,000mi

Median Mileage

UNKNOWN OR OTHER

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

31,415 25th Percentile

34,000 Median Mileage

38,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

UNKNOWN OR OTHER

ENGINE AND ENGINE COOLING

BACK OVER PREVENTION: WARNINGS

ELECTRICAL SYSTEM

SUSPENSION

TIRES

SERVICE BRAKES

STRUCTURE:BODY

STEERING

ENGINE

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"BACKUP SAFETY ALERT SYSTEM DESIGN IS INADEQUATE. EXTERIOR SENSORS ARE INSENSITIVE OR ERRATIC, WARNING BUZZER IS FAINT-TO-INAUDIBLE, ESPECIALLY IF THERE IS OTHER AMBIENT NOISE SUCH AS RADIO PLAYING, AND WARNING BUZZER SOUND LEVEL IS NOT ADJUSTABLE. WARNING LIGHTS THAT ARE COUPLED TO THE AUDIBLE ALER..."

"The contact owns a 2019 Mercedes-Benz GLS450 equipped with Pirelli Tires, Tire Line: Scorpion Verde, Tire Size: 275/50/R20, DOT Number: UNFJN542. The contact stated that the driver's side front and rear tires were leaking air from the inner sidewall. The driver's side front and rear tires were repla..."

"factory equiped jack lift failed, bearing and ring ejected and vehicle fall on the ground, contacted manufactory, and Mercedes indicated they probably can replace a new jack but no more action they will take, the vehicle has a gross weight about 6400lbs, and with air suspension, the vehicle will nee..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28