2018 Mercedes-Benz GLS 550 Problems, Complaints & Recalls
- Compared with other GLS 550 years
- Not enough data 1st of 3 for complaints
- Safety recalls
- 3 recalls: check your VIN
- NHTSA crash rating
- Not rated
Owners have filed 6 complaints with NHTSA about the 2018 Mercedes-Benz GLS 550. That is the most of any GLS 550 model year in the database (3 years). The most reported problem area is unknown or other (2 complaints, 33%), typically at around 7,000 miles. There are 3 safety recalls covering this model year.
- 6owner complaints
- 3safety recalls
- 0NHTSA investigations
- 0complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2018 Mercedes-Benz GLS 550 problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Unknown or Other | 2 | 33% | 7,000 | — | — |
| Electrical System | 1 | 17% | 32,000 | — | — |
| Power Train | 1 | 17% | 199 | — | — |
| Seat Belts | 1 | 17% | 32,000 | — | — |
| Service Brakes, Air | 1 | 17% | 4,500 | — | — |
| Suspension | 1 | 17% | 75,045 | — | — |
| Visibility/wiper | 1 | 17% | — | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
Complaints by year received
2018 Mercedes-Benz GLS 550 recalls (3)
Tap a recall to see the problem, the risk and the fix.
Communication: auto crash notification; electrical system:software
Problem: 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. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.
Risk: Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Fix: 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. MBUSA's number for this recall is 2021020025.
Service brakes, hydraulic
Problem: 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. The rear brake caliper pistons on these vehicles may not have been correctly coated, causing gas to become temporarily released into the rear brake hydraulic circuit, reducing braking performance.
Risk: Reduced braking performance can increase the risk of a crash.
Fix: 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.
Latches/locks/linkages:doors:latch
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017 GLE400 4Matic, GLE350 4Matic, GLE350, GLE550e 4Matic, GLE43 AMG 4Matic, GLE63 AMG 4Matic, GLS450, GLE63S 4Matic, GLS63 4Matic, S550e, S600, S63 AMG 4Matic, S65 AMG, S550, Mercedes-Maybach S600, Mercedes-Maybach S550 4Matic, GLE43 AMG 4Matic Coupe, GLE63S 4Matic Coupe, 2017-2018 GLS550 4Matic, S550 4Matic, 2018 S450, and S63 AMG 4Matic vehicles. The rear passenger door on the driver side may indicate that it is locked, when it may not be. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 206, "Door Locks and Door Retention Components."
Risk: If the door appears to be locked, the door may be unintentionally opened, increasing the risk of injury.
Fix: MBUSA will notify owners, and dealers will inspect the left rear door lock, replacing it as necessary, free of charge. The recall is expected to begin in January 2018. Owners may contact MBUSA customer service at 1-877-496-3691.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
The contact owns a 2018 Mercedes-Benz GLS 550. The contact stated while driving at various speeds, the vehicle made an abnormal clicking sound when making a right turn, and an abnormal ticking sound at startup. There was no warning light illuminated. Another driver informed the contact that the…
Water collects at the front row floor at driver and passenger sides
The contact owns a 2018 Mercedes Benz GLS550. The contact stated that when the brake pedal was depressed there was an abnormal noise detected. The brake warning indicator light was illuminated. The contact stated that the brake pad on one side of the disc was completely worn, and the other side of…
Seatbelt had tightened and not released when my body moves. Brakes are not applied. Typically during driving i'm small enough to maneuver my hand down to release red seat belt button. *tr i've had to stop my vehicle 5-10 times to release belt. I have 2 small kids 7/ 11 both are 60 pounds they are 4…
I was driving in a rural area when all of a sudden i heard what sounded like an explosion. My first instinct was that i had blown a tire because it was so loud. However, the car was handling fine and no warning messages came on. My husband and i both said "what was that?" everything on seemed fine…
Other Mercedes-Benz GLS 550 years
← 2017 GLS 550 · 2019 GLS 550 →
| Year | Complaints | Recalls |
|---|---|---|
| 2019 GLS 550 | 2 | 2 |
| 2018 | 6 | 3 |
| 2017 GLS 550 | 6 | 5 |
See all Mercedes-Benz GLS 550 problems by year, every Mercedes-Benz model, or the Mercedes-Benz VIN decoder.
Similar Mercedes-Benz models
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Frequently asked questions
What are the most common problems with the 2018 Mercedes-Benz GLS 550?
Owners most often report unknown or other, electrical system, power train problems. The top one, unknown or other, accounts for 2 complaints.
Was there a recall on the 2018 Mercedes-Benz GLS 550?
Yes, 3 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2018 Mercedes-Benz GLS 550 a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other GLS 550 model years, the 2018 has too little data to compare. Always get a pre-purchase inspection and check the VIN for open recalls.