2018 Mercedes-benz Gls450 problems

General information about Mercedes-benz-Gls450
Overview of popular issues
Recalls list

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 Gls450 problems

The 2018 Mercedes-Benz GLS450 is a luxury SUV that has been reported by some owners to have several common problems. These issues include suspension and pump problems, excessive air in tires, and reliability concerns.

Suspension and pump problems are a common complaint among 2018 GLS450 owners. One owner reported that their 2012 GL450 had lots of suspension issues, with several parts replaced under warranty. They were considering trading up to a 2017 or 2018 GLS450 but were concerned about whether these issues would persist. Another owner reported that they had spent $4k+ on new pinion, suspension pump, and steering pump on their 2017 GLS450, which they had purchased CPO with 31,000 miles. These issues suggest that the suspension and pump systems in the 2018 GLS450 may be prone to failure, particularly at high mileage.

Excessive air in tires is another issue that some 2018 GLS450 owners have reported. One owner noted that their tires had over 40 psi, which gave a bad ride. They lowered the air pressure to 32 psi, which was the recommended pressure according to the sticker on the fuel door. This issue suggests that the GLS450's tires may be prone to overinflation, which could lead to a harsh ride and increased wear and tear on the tires.

Finally, reliability is a concern for some 2018 GLS450 owners. Consumer Reports predicts that the 2024 GLS will be less reliable than other new cars, based on the similar GLE and the Mercedes brand scores. This prediction suggests that the GLS450 may be prone to mechanical issues and may require frequent repairs.

In summary, the 2018 Mercedes-Benz GLS450 has several common problems, including suspension and pump issues, excessive air in tires, and reliability concerns. These issues may be particularly prevalent at high mileage and could lead to increased repair costs and decreased driver satisfaction.

Is the GLS 450 reliable?

Severity. The probability of a repair being a severe or major issue is 20% for the Mercedes-Benz GL450, compared to an average of 19% for luxury fullsize SUVs and 12% for all vehicle models.

Is it worth it to buy GLS?

Superb car and richest experience nice and just a little think I am the owner of Mercedes Benz GLS car and driving experience is superb and look like richest car of the world only for me. Service and maintenance is a bit expensive but the vehicle comfortable is top notch....

How many miles do Mercedes GL 450 last?

I have seen these well over 300,000 miles if they are well maintained but 100,000 is still little on mileage for these here. They will last a long time with normal maintenance. If more help is needed, use the reply tab to continue our conversation.

How many miles per gallon does a GLS 450 get?

20 mpg city and 24 mpg highway

2021 Mercedes-Benz GLS 450 4MATIC® SUV: Up to 20 mpg city and 24 mpg highway*

Is the GLS 450 reliable?

Severity. The probability of a repair being a severe or major issue is 20% for the Mercedes-Benz GL450, compared to an average of 19% for luxury fullsize SUVs and 12% for all vehicle models.

Is it worth it to buy GLS?

How many miles do Mercedes GL 450 last?

Does GLS 450 have air suspension?

What truly sets the GLS 450 apart is its remarkable suspension system. Equipped with airmatic air suspension, the vehicle offers adaptive damping, automatically adjusting to varying road conditions and driving modes.

2018 Mercedes-benz Gls450 complaints

The NHTSA has received 0 complaints about various vehicle components related to the 2018 Mercedes-benz Gls450.

You can leave your car complaint via the special form below.

2018 Mercedes-benz Gls450 recalls

The National Highway Traffic Safety Administration (NHTSA) has issued 3 recalls for different components of the 2018 Mercedes-benz Gls450.

2022-05-20

Manufacturer: Mercedes-Benz USA, LLC
Components: ELECTRICAL SYSTEM:SOFTWARE
Summary: 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. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.
Consequence: A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
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. Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers are for this recall is 2022060005 and 2023110006.

2021-02-05

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.

2018-08-16

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.

Additional sources

More sources of information about 2018 Mercedes-benz Gls450 problems:

2017 or 2018 GLS450 common issues - MBWorld.org Forums

https://mbworld.org/forums/gls-class-x166/747742-2017-2018-gls450-common-issues.html

Jun 17, 2019 ... GLS Class (X166) - 2017 or 2018 GLS450 common issues - Hi, I have a 2012 GL450 with 80k+ miles and it has been a great car.

2018 Mercedes-Benz GLS Problems | Kelley Blue Book

https://www.kbb.com/mercedes-benz/gls/2018/common-problems/

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 GLS 450 Transmission issue - MBWorld.org Forums

https://mbworld.org/forums/gls-class-x166/702202-2018-gls-450-transmission-issue.html

Mar 21, 2018 ... Is there any known issues with the transmission or the valve body for the GLS?? Anybody else experienced this?

Mercedes-Benz GL450 Problems and Complaints - 9 Issues

https://repairpal.com/problems/mercedes-benz/gl450

Top Mercedes-Benz GL450 Problems · Internal Component Failure May Cause Rough Shifting · Soft Braking Components May Wear After 20,000 Miles · Oil May Leak From ...