2018 Mercedes-benz Gls550 problems
The Mercedes-Benz GLS, formerly Mercedes-Benz GL-Class, is a full-size luxury crossover SUV produced by Mercedes-Benz since 2006. In each of its generations it is a three-row, seven-passenger vehicle positioned above the GLE (formerly Mercedes-Benz M-Class before 2016). The GLS is considered the flagship of the marque's SUV lineup, although the body-on-frame G-Class (originally intended for military off-roading but also offered in luxurious trims) is more expensive and has been in production longer.
The GLS shares the same unibody architecture with the GLE. Most GLS vehicles are assembled at the Mercedes plant in Alabama, except for a small number of early 2007 production vehicles which were manufactured in Germany. The first generation model (X164) was manufactured between 2006 and 2012 and was replaced in 2013 by the new generation GL-Class (X166).
From 2016 with the release of the facelifted second generation model, the GL-Class was renamed to GLS as per the revised nomenclature adopted by Mercedes. Under this scheme, SUVs use the base name "GL", followed by the model's placement in Mercedes-Benz hierarchy. The "G" is for geländewagen (German for off-road vehicle) and alludes the long-running G-Class. This is followed by the letter "L" that acts as a linkage with the letter "S", the SUV equivalent to the S-Class, marketing the GLS as the corresponding SUV to the S-Class full-size sedan.
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Common 2018 Mercedes-benz Gls550 problems
Based on the information provided in the search results, here is a list of common problems with the 2018 Mercedes-Benz GLS550 as reported by owners:
- Loose, Broken, or Missing Gas Cap: A loose or damaged gas cap can lead to fuel evaporation, more frequent trips to the pump, and increased fuel costs.
- Vacuum Leak: Vacuum leaks in the Mercedes-Benz GLS550 can cause high RPM in idle, surges in engine speed, and other performance issues due to cracked or dried out vacuum hoses.
- Low or Dead Battery: A low or dead battery can prevent the vehicle from starting, impact lighting, radio, and phone charging, emphasizing the importance of a well-functioning battery.
- Faulty Mass Airflow Sensor (MAF): A malfunctioning MAF sensor can result in difficulty starting the engine, rough idling, or sudden changes in throttle response, affecting engine efficiency.
- Need for New Spark Plugs or Plug Wires: Worn-out spark plugs or plug wires can lead to poor engine performance, decreased power, difficulty starting the engine, and potential damage to other engine components.
These common problems highlight the importance of regular maintenance and prompt attention to issues to ensure the optimal performance and longevity of the 2018 Mercedes-Benz GLS550.
Is the Mercedes-Benz GLS 550 a reliable car?
Mercedes-Benz GL550 owners have to bring their vehicles into a repair shop for unscheduled repairs an average of 1.5 times per year, compared to an average of 0.7 times for luxury fullsize SUVs and 0.4 times for all vehicle models.
How much is maintenance on a Mercedes GLS550?
2019 GLS-Class SUV GLS 550 4MATIC 4dr SUV AWD (4.7L 8cyl Turbo 9A)
| Year 1 | Total | |
|---|---|---|
| Maintenance | $2,542 | $14,489 |
| Repairs | $1,959 | $11,413 |
| Taxes & Fees | $3,823 | $4,711 |
| Financing | $2,932 | $8,594 |
What is the fuel mileage of a GLS550?
Based on data from 7 vehicles, 650 fuel-ups and 216,845 miles of driving, the 2017 Mercedes-Benz GLS550 gets a combined Avg MPG of 16.58 with a 0.21 MPG margin of error. Below you can see a distribution of the fuel-ups with 15 outliers (2.26%) removed.
Where is the Mercedes GLS 550 made?
The United States has a Mercedes-Benz production plant in Tuscaloosa, Alabama with about 3,700 employees. This plant was founded in 1995 and was the first big Mercedes-Benz plant outside of its home country, Germany. The GLS, GLE, GLE Coupe, and C-Class sedan are produced here.
Is the Mercedes-Benz GLS 550 a reliable car?
Mercedes-Benz GL550 owners have to bring their vehicles into a repair shop for unscheduled repairs an average of 1.5 times per year, compared to an average of 0.7 times for luxury fullsize SUVs and 0.4 times for all vehicle models.
How much is maintenance on a Mercedes GLS550?
2019 GLS-Class SUV GLS 550 4MATIC 4dr SUV AWD (4.7L 8cyl Turbo 9A)
| Year 1 | Total | |
|---|---|---|
| Maintenance | $2,542 | $14,489 |
| Repairs | $1,959 | $11,413 |
| Taxes & Fees | $3,823 | $4,711 |
| Financing | $2,932 | $8,594 |
Where is the Mercedes GLS 550 made?
The United States has a Mercedes-Benz production plant in Tuscaloosa, Alabama with about 3,700 employees. This plant was founded in 1995 and was the first big Mercedes-Benz plant outside of its home country, Germany. The GLS, GLE, GLE Coupe, and C-Class sedan are produced here.
What is the fuel mileage of a GLS550?
Based on data from 7 vehicles, 650 fuel-ups and 216,845 miles of driving, the 2017 Mercedes-Benz GLS550 gets a combined Avg MPG of 16.58 with a 0.21 MPG margin of error. Below you can see a distribution of the fuel-ups with 15 outliers (2.26%) removed.
2018 Mercedes-benz Gls550 complaints
The NHTSA has received 0 complaints about various vehicle components related to the 2018 Mercedes-benz Gls550.
You can leave your car complaint via the special form below.
2018 Mercedes-benz Gls550 recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 3 recalls for different components of the 2018 Mercedes-benz Gls550.
- Manufacturer: Mercedes-Benz USA, LLC
- Components: ELECTRICAL SYSTEM:SOFTWARE
- Summary: 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.
- Consequence: Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
- 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. MBUSA's number for this recall is 2021020025.
- Manufacturer: Mercedes-Benz USA, LLC.
- Components: SERVICE BRAKES, HYDRAULIC
- Summary: 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.
- Consequence: Reduced braking performance can increase the risk of a crash.
- 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.
- Manufacturer: Mercedes-Benz USA, LLC.
- Components: LATCHES/LOCKS/LINKAGES:DOORS:LATCH
- Summary: 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."
- Consequence: If the door appears to be locked, the door may be unintentionally opened, increasing the risk of injury.
- Remedy: 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.
Additional sources
More sources of information about 2018 Mercedes-benz Gls550 problems:
Disappointment abound a 2018 GLS 550 | Mercedes-Benz Forum
Sep 5, 2020 ... New members info also for you below. www.benzworld.org. New Member Introductions (NO car issues please). Drop in and introduce yourself to the ...
2018 GLS550 - M278 Very Weird Misfire Issue, Help Needed ...
Dec 18, 2022 ... The mass air flow sensor is a common cause of your trouble. You replaced spark plugs. Did you remember to replace the rubber spark plug boots as ...
2018 Mercedes-Benz GLS Problems | Kelley Blue Book
How reliable is the 2018 Mercedes-Benz GLS? See the most common repairs performed and learn if your vehicle is at risk for major repairs in the next 12 ...
2018 Mercedes-Benz GLS550 Repair: Service and Maintenance Cost
Get 2018 Mercedes-Benz GLS550 repair and maintenance costs, common problems, recalls, and more. Find certified Mercedes-Benz mechanics near you.
Should I buy a 2017 GLS550 with 96k miles? : r/mercedes_benz
Oct 19, 2023 ... I have four with high-mileage awards from Mercedes-Benz Classic Center. Aside from routine wear items, if service guidelines and common sense ...
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