2018 Mercedes-Benz GLS 450
Only 14 complaints on file — too few for a fair verdict.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
Only 14 complaints on file — too few for a fair verdict. The data below is complete but unranked.
- Complaints
- 14
- Recalls
- 3
- Investigations
- 0
- Top problem
- —
Too few to rank
Campaigns on file for 2018
None on file
Not enough data
Complaints per year
2018: 14 complaints
View as data table
| Year | Complaints |
|---|---|
| 2018 | 14 |
| 2019 | 20 |
| 2020 | 35 |
| 2022 | 14 |
| 2023 | 7 |
| 2024 | 14 |
Known problem areas
Only 14 complaints on file for this model year — too few to rank by share. Raw counts only, below.
Suspension
3 of 14 total reports mention: suspension.
Service brakes
3 of 14 total reports mention: service brakes.
Show complaint excerpts
January 2023 - Airbag suspension failed. Replaced by Mercedes dealership. December 2024 - Airbag suspension failed. Replaced by Mercedes dealership. April 2024: First brake failure. The brakes stopped while driving. Repaired.
NHTSA ODI report, 2025-12-05
Also filed under Engine and forward collision avoidance
I was already 90% in parking line which is handicap's.
NHTSA ODI report, 2020-09-08
Structure
2 of 14 total reports mention: structure, most commonly citing body.
Engine
2 of 14 total reports mention: engine.
Show complaint excerpts
The contact owned a 2018 Mercedes Benz GLS450. The contact stated that after turning the ignition switch off, the driver suddenly discovered flames were coming from the engine compartment.
NHTSA ODI report, 2021-10-14
Electrical system
2 of 14 total reports mention: electrical system, most commonly citing front underhood.
Show complaint excerpts
Tl* the contact owns a 2018 Mercedes-Benz GLS450. While driving 70 MPH, the vehicle lost power and all the warning indicators on the instrument panel illuminated. Also, when the brake pedal was depressed, the vehicle failed to stop.
NHTSA ODI report, 2018-08-07
Safety timeline
3 recalls · 0 investigations · oldest first
To check one car, enter its VIN on the NHTSA recall page. Check a VIN →
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2018-09-14Service brakes, hydraulic18V539000 Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 Mercedes-Benz GLE350 4Matic, GLE350, GLS450 4Matic, GLS550 4matic, GLE43 AMG 4Matic, GLE63 AMG 4Matic, GLE63S AMG 4Matic, and GLS63 AMG 4Matic vehicles.
Remedy: MBUSA will notify owners, and dealers will bleed the rear axle brake system, free of charge. The recall began September 14, 2018. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2018080013.
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2021-03-12Communication, electrical system21V058000 Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles.
Remedy: MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1-877-762-8267.
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2022-07-08Communication, electrical system22V365000 Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles.
Remedy: The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022.
Buy-smart checklist
2018 Mercedes-Benz GLS 450 — pre-purchase inspection
Inspect
- Suspension: 3 reports on file for this year.
- Service brakes: 3 reports on file for this year.
- Structure: 2 reports on file for this year.
Verify these recalls were completed
- Recall 18V539000 · Service brakes, hydraulic
- Recall 21V058000 · Communication, electrical system
- Recall 22V365000 · Communication, electrical system
FAQ
- Is the 2018 Mercedes-Benz GLS 450 reliable?
- There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
- What are the most common problems with the 2018 Mercedes-Benz GLS 450?
- The most-reported component is suspension, accounting for 21% of complaints on file.
- How many recalls does the 2018 Mercedes-Benz GLS 450 have?
- 3 recalls on file for this model year.
Data updated 2026-11-01 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.