The Best Years For Mercedes Benz Gls And Some To Avoid

The Mercedes-Benz GLS is the flagship SUV from the German automaker, offering a luxurious and spacious interior, powerful engines, and a host of advanced technology features. Choosing the right GLS model year can be a daunting task, given the variations in features, reliability, and overall value. This guide aims to provide a comprehensive overview of the best and worst years for the Mercedes-Benz GLS, helping you make an informed decision.

Mercedes-Benz GLS Model Years: At a Glance

Detailed Explanations

2017: The 2017 GLS represents the final year of the first generation (X166) after a mid-cycle refresh. This means many of the initial kinks and issues that plagued earlier models were ironed out. This model year offers a good balance of luxury, performance, and relative reliability, making it a solid choice for those seeking a pre-owned GLS at a reasonable price. While the air suspension system is generally reliable, it's always wise to have it inspected by a qualified mechanic before purchasing.

2018: The 2018 GLS is essentially a carryover from the 2017 model year, representing the last of the first generation. Like the 2017, it benefits from the accumulated improvements and refinements made throughout the first generation's lifespan. It's considered one of the more reliable years for the X166 chassis. However, keep in mind that the infotainment system, while functional, may feel somewhat outdated compared to newer models with more advanced features like Apple CarPlay and Android Auto (depending on trim and options).

2020: The 2020 GLS marks the beginning of the second generation (X167), a complete redesign with a more modern exterior, a vastly improved interior, and a host of new technology features. The introduction of the MBUX infotainment system is a significant upgrade. However, as with many completely redesigned vehicles, early production models of the 2020 GLS experienced some teething issues, primarily related to software glitches and the complex electronic systems. It's advisable to thoroughly check the vehicle's history and ensure any recalls or technical service bulletins (TSBs) have been addressed.

2021: Building upon the foundation of the 2020 model, the 2021 GLS benefits from further refinements and improvements. While still part of the second generation, Mercedes-Benz addressed many of the initial software glitches and issues that plagued the 2020 model. This makes the 2021 GLS a more reliable and desirable option compared to the first year of the redesign. While generally reliable, some owners have reported minor electrical issues, so a thorough inspection is recommended.

2022: The 2022 GLS continues the trend of refinement and improvement seen in the second generation. With each passing year, Mercedes-Benz further honed the vehicle's performance, technology, and overall reliability. The 2022 model also saw a wider availability of optional features and packages. However, as a luxury SUV with advanced technology, the GLS can be expensive to maintain and repair, especially as it ages. Be prepared for potentially high repair costs, especially for complex systems like the air suspension, MBUX infotainment, and advanced driver-assistance systems.

2023: The 2023 GLS represents one of the most recent model years in the lineup, offering the latest technology, safety features, and comfort. With only minor updates and enhancements compared to the previous years of the second generation, the 2023 GLS is generally considered a reliable choice. However, the high purchase price is a significant factor to consider. As a new vehicle, depreciation will be a factor, and insurance costs will also be higher.

Model Years to Potentially Avoid (And Why)

While the GLS is generally a well-regarded luxury SUV, some model years have a higher propensity for issues than others. Here's a breakdown of model years to potentially avoid, and the reasons why:

• 2013-2016 (First Generation GL/GLS): These earlier models of the first generation GL/GLS (X166 chassis) are known to have more frequent issues compared to the later years. Common problems include air suspension failures, oil leaks, and issues with the infotainment system. While these issues are not necessarily deal-breakers, they can lead to costly repairs. Thorough inspection and a comprehensive vehicle history are crucial before purchasing.

• 2020 (First Year of Second Generation): As mentioned earlier, the 2020 GLS, being the first year of the second generation (X167), experienced some teething issues, primarily related to software glitches and the complex electronic systems. While many of these issues were addressed through software updates and recalls, it's still advisable to be cautious and thoroughly check the vehicle's history and ensure any necessary repairs have been performed.

Reasons for Avoiding Certain Model Years:

• Higher Probability of Repairs: Older models are simply more likely to require repairs due to wear and tear. This is especially true for complex systems like the air suspension, which is a common point of failure in the GLS.

• Outdated Technology: While still luxurious, older GLS models lack the advanced technology features found in newer models. This can be a significant factor for buyers who prioritize features like Apple CarPlay, Android Auto, and advanced driver-assistance systems.

• Depreciation: While all vehicles depreciate over time, older models have already experienced a significant portion of their depreciation curve. This can make them a more affordable option, but it also means that they will likely continue to depreciate at a faster rate.

Key Areas to Inspect When Buying a Used GLS

Regardless of the model year you're considering, it's crucial to thoroughly inspect any used GLS before making a purchase. Here are some key areas to focus on:

• Air Suspension: The air suspension system is a common point of failure in the GLS. Look for signs of sagging, uneven ride height, or unusual noises coming from the suspension. Have a mechanic perform a thorough inspection of the system.

• Oil Leaks: Check for oil leaks around the engine and transmission. Common areas for leaks include the valve cover gaskets, oil pan gasket, and rear main seal.

• Infotainment System: Test all features of the infotainment system, including the navigation, audio, and Bluetooth connectivity. Look for any glitches or malfunctions.

• Electronics: Check all electronic systems, including the power windows, door locks, seats, and lights. Make sure everything is functioning properly.

• Brakes: Inspect the brake pads and rotors for wear. Have a mechanic check the brake lines and calipers for leaks.

• Tires: Check the tire tread depth and look for any signs of uneven wear.

• Vehicle History Report: Obtain a vehicle history report (e.g., Carfax or AutoCheck) to check for accidents, title issues, and maintenance records.

• Pre-Purchase Inspection: Have a qualified mechanic perform a pre-purchase inspection. This is the best way to identify any potential problems before you buy the vehicle.

Frequently Asked Questions

Which GLS year is the most reliable? The 2017 and 2018 GLS models, the final years of the first generation, are generally considered the most reliable. They benefited from years of refinements and improvements.

Are GLS models expensive to maintain? Yes, as a luxury SUV, the GLS can be expensive to maintain, especially as it ages and requires more repairs.

Does the GLS have air suspension problems? Air suspension issues are a known problem, particularly in earlier models. Regular maintenance and inspection are crucial.

Is the 2020 GLS a good year to buy? The 2020 GLS is the first year of a redesign, and while it offers updated technology, it also had some initial software glitches. Proceed with caution.

What is MBUX in the Mercedes-Benz GLS? MBUX is the Mercedes-Benz User Experience, an advanced infotainment system featuring voice control, touchscreen interface, and artificial intelligence.

Conclusion

Choosing the right Mercedes-Benz GLS model year involves carefully considering your budget, desired features, and tolerance for potential maintenance costs. While the 2017 and 2018 models offer a good balance of reliability and value, the newer second-generation models (2021-2023) provide the latest technology and features, although at a higher price point. Always thoroughly inspect any used GLS before purchasing and consider a pre-purchase inspection by a qualified mechanic to avoid potential problems down the road.