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Best Mercedes-Benz GLS Model Years (Ranked) in 2027

📖 2,676 words🗓️ Published Aug 5, 2026

Direct Answer

The 10 best best mercedes-benz gls model years (ranked) are ranked below on measured performance, build quality, price, and how each one actually holds up in daily use rather than how it reads on a spec sheet. Each pick lists what it costs, who it suits, and what it gives up against the one above it, so the list can be read straight down without doubling back.

1. 2020-2023 GLS 450

The 2020-2023 GLS 450 is the best overall pick because it combines the most refined ride, strongest reliability, and latest technology in the nameplate's history. Its 3.0L turbocharged inline-six with 48-volt EQ Boost delivers 362 hp and seamless acceleration. Standard Airmatic air suspension and the dual-screen MBUX cabin set a new benchmark for the three-row luxury SUV segment. This generation's MHA platform provides a quiet, isolated, and composed driving experience.

This is the GLS for buyers who want the complete modern flagship experience without V8 running costs. It trades the V8's thrust for superior daily drivability and lower maintenance. Compared to the 2017-2019 GLS 450 below, it offers a more opulent interior and better electronics, justifying its higher used price. Choose this if your budget reaches a recent, low-mileage example.

2. 2017-2019 GLS 450

The 2017-2019 GLS 450 ranks as the best value because it delivers near-current flagship luxury at a steep depreciation discount. Its 3.0L biturbo V6 produces 362 hp, paired with a smoother 9-speed automatic transmission. The X166 platform offers a spacious, luxurious three-row cabin with standard 4MATIC all-wheel drive. This model avoids the most expensive issues of older trucks while retaining the core GLS experience.

This is the smart-money pick for buyers who prioritize space and luxury over the latest tech. It trades the X167's MBUX system and inline-six refinement for significant savings. Compared to the 2020-2023 GLS 450 above, it feels slightly older but offers 90% of the experience for far less. Verify the Airmatic suspension health before purchase, as it is the main cost risk.

Best Mercedes-Benz GLS Model Years (Ranked) in 2027 — figure 1

3. 2021-2023 GLS 580

The 2021-2023 GLS 580 ranks third because it adds effortless V8 power to the best GLS platform. Its 4.0L twin-turbo V8 makes 483 hp, aided by the same 48-volt EQ Boost mild-hybrid system as the 450. This powertrain delivers strong, smooth acceleration while retaining the plush Airmatic ride and opulent three-row cabin. It is the ideal choice for buyers who want genuine V8 performance without the extreme costs of the AMG.

This GLS is for drivers who value highway passing power and towing capability. It trades the inline-six's efficiency and lower maintenance for V8 character and higher running costs. Compared to the 2017-2019 GLS 450 below, it offers a more modern platform and significantly more thrust. Budget for higher fuel, tire, and service expenses, but a well-documented example is a superb long-distance luxury hauler.

4. 2013-2016 GL 450

The 2013-2016 GL 450 ranks fourth as the first X166-generation truck, offering a lighter body and improved efficiency over its predecessor. Early models used a 4.6L biturbo V8, while later ones switched to the 3.0L biturbo V6, both delivering strong performance. The platform introduced a more refined ride and better interior quality than the X164. These are well-rounded, comfortable three-row luxury SUVs at very attractive used prices.

This is the budget-conscious buyer's entry into the modern GLS platform. It trades the newer GLS 580's technology and power for substantial savings. Compared to the 2017-2019 GLS 450 above, it lacks the 9-speed transmission and the GLS nameplate but shares the same core bones. Inspect the air suspension and 7G-Tronic transmission carefully, as these are the primary cost risks on this generation.

5. 2020-2023 AMG GLS 63

The 2020-2023 AMG GLS 63 ranks fifth because it is the performance flagship, packing a hand-built 4.0L twin-turbo V8 with 603 hp. It launches this seven-seat SUV to 60 mph in about 4.1 seconds, an astonishing feat for its size. AMG Active Ride Control and a sport-tuned 9-speed transmission sharpen the handling without sacrificing three-row practicality. This is the ultimate expression of the GLS formula.

Best Mercedes-Benz GLS Model Years (Ranked) in 2027 — figure 2

This is for buyers who demand supercar pace with family-friendly space. It trades the GLS 580's relative efficiency for extreme performance and much higher running costs. Compared to the 2013-2016 GL 450 below, it is vastly more powerful and technologically advanced. Buy only with full maintenance records and a thorough inspection of the suspension and turbos, as repair bills are severe.

6. 2017-2019 GLS 550

The 2017-2019 GLS 550 ranks sixth because it offers a 4.7L biturbo V8 with 449 hp, delivering smooth, abundant power. It pairs this engine with the 9-speed automatic, providing a more authoritative highway demeanor than the 450. The luxurious three-row cabin is identical to the 450, making it a compelling V8 alternative. Depreciation makes these V8 flagships tempting on the used market.

This is for buyers who value effortless V8 power and are prepared for higher fuel and maintenance costs. It trades the GLS 450's efficiency for stronger acceleration and a more commanding presence. Compared to the 2020-2023 AMG GLS 63 above, it is significantly less extreme but also far more affordable. Verify the air suspension, check for oil leaks, and confirm service intervals were honored before purchase.

7. 2013-2016 GL 350 BlueTEC

The 2013-2016 GL 350 BlueTEC ranks seventh because it offers the best fuel economy in the lineup with a torque-rich 3.0L turbo-diesel V6. It pairs this engine with the 7-speed automatic, delivering strong towing capability and long-distance cruising ability. The diesel's low-end torque makes it a quiet, relaxed highway companion. This is the most efficient way to own a three-row Mercedes luxury SUV.

Best Mercedes-Benz GLS Model Years (Ranked) in 2027 — figure 3

This is for high-mileage owners who prioritize efficiency and towing over outright performance. It trades the GL 450's V8 smoothness for diesel economy and durability. Compared to the 2017-2019 GLS 550 above, it is far more frugal but requires careful attention to diesel-specific maintenance. Verify the AdBlue/SCR system, injectors, and emissions recall history, as neglected examples can be costly to repair.

8. 2013-2016 GL 550

The 2013-2016 GL 550 ranks eighth because it offered the 4.6L biturbo V8 with 429 hp before the GLS rename. It combines strong acceleration with the X166 platform's improved efficiency and refinement over the X164. The three-row cabin is luxurious and spacious, with standard 4MATIC all-wheel drive. This is an affordable way to get V8 muscle in a modern Mercedes SUV.

This is for buyers who want V8 performance in a depreciated luxury SUV and are prepared for upkeep costs. It trades the GL 350 BlueTEC's efficiency for significantly more power. Compared to the 2017-2019 GLS 550 above, it is older and less refined but also cheaper. Buy only with comprehensive service records, as air suspension, turbochargers, and 7G-Tronic issues can lead to steep repair bills.

9. 2010-2012 GL 450

The 2010-2012 GL 450 ranks ninth as the refreshed X164 generation, bringing updated styling and improved interior materials. Its 4.6L V8 produces around 335 hp, paired with the 7-speed automatic transmission. This model established the three-row, body-on-frame-adjacent luxury SUV formula with serious off-road and towing ability. These are now aging vehicles available at very low prices.

This is for budget buyers who are prepared for potential repairs on an older luxury SUV. It trades the 2013-2016 GL 550's modern platform for significant savings. Compared to the 2013-2016 GL 350 BlueTEC above, it is less efficient but simpler in its maintenance. Inspect for air suspension faults, rust in salt-belt states, and worn electronics, as Mercedes repairs can be expensive.

Best Mercedes-Benz GLS Model Years (Ranked) in 2027 — figure 4

10. 2007-2009 GL 320 CDI

The 2007-2009 GL 320 CDI ranks last because it is the oldest and least refined GLS-family vehicle, with the highest maintenance risk. Its 3.0L CDI turbo-diesel V6 offers strong torque and impressive towing capability. The X164 platform provides real off-road hardware and three rows of seating. These early trucks are now budget transportation or project vehicles at best.

This is for buyers who want ruggedness or a very low price and are willing to accept aging components. It trades the 2010-2012 GL 450's V8 smoothness for diesel efficiency and torque. Compared to the 2013-2016 GL 350 BlueTEC above, it is older and less refined, with higher risk of failure. Have a Mercedes specialist inspect the air suspension, transmission, and diesel emissions components thoroughly before purchase.

How we ranked these

We ranked GLS and GL model years by weighting reliability data from owner-reported issues, air suspension failure frequency, transmission performance, powertrain refinement, cabin technology, and real-world depreciation curves. Safety ratings, NHTSA recall records, and expert reviews from Edmunds and Car and Driver informed scores. The 2020-2023 X167 GLS 450 scored highest for its inline-six smoothness and improved electronics.

We deliberately ignored subjective styling preferences, brand prestige, and dealer markup variations, as these do not reflect long-term ownership value. We also excluded rare AMG variants from top rankings due to prohibitive running costs, and we did not factor in off-road capability, since most buyers never use it. This approach prioritizes practical, data-driven ownership outcomes over emotional appeal.

FAQ

What is the most reliable model year for the Mercedes-Benz GLS?

The 2020-2023 X167 GLS 450 is widely considered the most reliable, thanks to its smoother inline-six engine with mild-hybrid assist and improved electronics. Earlier models, especially high-mileage X164 GLs, are more prone to air suspension and transmission issues.

Should I avoid the older GL-Class (X164) models?

Yes, if you want lower maintenance risk. The X164 models (2007-2012) have aging air suspension systems and 7G-Tronic transmissions that can be costly to repair, and their electronics are dated. They can still be a budget option if you’re prepared for potential repairs.

Is the AMG GLS 63 worth buying used?

It can be, but only if you budget for higher running costs. The AMG GLS 63 offers thrilling V8 performance, but its air suspension, brakes, and engine maintenance are more expensive than standard models. Look for a well-maintained 2020-2023 example for the best balance of power and reliability.

What is the best value GLS model year to buy?

The 2017-2019 GLS 450 (X166) offers the best value, combining a 362-hp twin-turbo V6, near-current luxury, and a spacious interior at a steep depreciation discount. It avoids the most expensive issues of older models while still being affordable.

How long does the air suspension typically last on a GLS?

Air suspension components, like air struts and the compressor, often need attention between 80,000 and 120,000 miles. Replacement costs can range from moderate to high depending on the model year, so it’s a key item to inspect before buying a used GLS.

Are newer GLS models more expensive to maintain than older ones?

Generally, yes. While the 2020-2023 X167 models have better reliability, their advanced electronics, MBUX system, and mild-hybrid components can lead to higher repair costs if issues arise. Older models have cheaper parts but more frequent failures.

What is the towing capacity of a Mercedes-Benz GLS?

Most GLS models can tow between 7,000 and 7,500 pounds when properly equipped. The diesel GL 350 BlueTEC is particularly strong for towing due to its torque. Always check the owner's manual and ensure the trailer hitch and wiring are in good condition.

Which GLS model year has the best technology?

The 2020-2023 X167 models have the best technology, featuring the dual-screen MBUX infotainment system with voice control, over-the-air updates, and advanced driver-assistance features. The 2017-2019 X166 models have COMAND, which is dated but functional. Avoid X164 models for tech.

What are common problems with the GLS 550?

The GLS 550's 4.7L biturbo V8 can develop oil leaks from valve cover gaskets and turbocharger lines. Air suspension struts and the 9-speed transmission also require attention. Regular maintenance is critical; check for service records and have a pre-purchase inspection done.

Is the GLS a good family SUV?

Yes, the GLS is an excellent family SUV, offering three rows of seating, a spacious cabin, and top safety ratings. The 2020-2023 models have the best second-row comfort with optional executive seats. Just budget for higher running costs compared to mainstream SUVs.

Sources

flowchart TD S["Best best mercedes-benz gls model years"] S --> R0["1. 2020-2023 GLS 450"] S --> R1["2. 2017-2019 GLS 450"] S --> R2["3. 2021-2023 GLS 580"] S --> R3["4. 2013-2016 GL 450"] S --> R4["5. 2020-2023 AMG GLS 63"]

flowchart LR A["Choosing best mercedes-benz gls model years"] --> B{"Budget first?"} B -->|"No"| C["2020-2023 GLS 450"] B -->|"Yes"| D{"Need every feature?"} D -->|"Yes"| E["2013-2016 GL 450"] D -->|"No"| F["2007-2009 GL 320 CDI"]

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## Direct Answer

The 10 best best mercedes-benz gls model years (ranked) are ranked below on measured performance, build quality, price, and how each one actually holds up in daily use rather than how it reads on a spec sheet. Each pick lists what it costs, who it suits, and what it gives up against the one above it, so the list can be read straight down without doubling back.

## 1. 2020-2023 GLS 450

The 2020-2023 GLS 450 is the best overall pick because it combines the most refined ride, strongest reliability, and latest technology in the nameplate's history. Its 3.0L turbocharged inline-six with 48-volt EQ Boost delivers 362 hp and seamless acceleration. Standard Airmatic air suspension and the dual-screen MBUX cabin set a new benchmark for the three-row luxury SUV segment. This generation's MHA platform provides a quiet, isolated, and composed driving experience.

This is the GLS for buyers who want the complete modern flagship experience without V8 running costs. It trades the V8's thrust for superior daily drivability and lower maintenance. Compared to the 2017-2019 GLS 450 below, it offers a more opulent interior and better electronics, justifying its higher used price. Choose this if your budget reaches a recent, low-mileage example.

## 2. 2017-2019 GLS 450

The 2017-2019 GLS 450 ranks as the best value because it delivers near-current flagship luxury at a steep depreciation discount. Its 3.0L biturbo V6 produces 362 hp, paired with a smoother 9-speed automatic transmission. The X166 platform offers a spacious, luxurious three-row cabin with standard 4MATIC all-wheel drive. This model avoids the most expensive issues of older trucks while retaining the core GLS experience.

This is the smart-money pick for buyers who prioritize space and luxury over the latest tech. It trades the X167's MBUX system and inline-six refinement for significant savings. Compared to the 2020-2023 GLS 450 above, it feels slightly older but offers 90% of the experience for far less. Verify the Airmatic suspension health before purchase, as it is the main cost risk.

![Best Mercedes-Benz GLS Model Years (Ranked) in 2027 — figure 1](/assets/qa/ca0646-b1.jpg)


## 3. 2021-2023 GLS 580

The 2021-2023 GLS 580 ranks third because it adds effortless V8 power to the best GLS platform. Its 4.0L twin-turbo V8 makes 483 hp, aided by the same 48-volt EQ Boost mild-hybrid system as the 450. This powertrain delivers strong, smooth acceleration while retaining the plush Airmatic ride and opulent three-row cabin. It is the ideal choice for buyers who want genuine V8 performance without the extreme costs of the AMG.

This GLS is for drivers who value highway passing power and towing capability. It trades the inline-six's efficiency and lower maintenance for V8 character and higher running costs. Compared to the 2017-2019 GLS 450 below, it offers a more modern platform and significantly more thrust. Budget for higher fuel, tire, and service expenses, but a well-documented example is a superb long-distance luxury hauler.



## 4. 2013-2016 GL 450

The 2013-2016 GL 450 ranks fourth as the first X166-generation truck, offering a lighter body and improved efficiency over its predecessor. Early models used a 4.6L biturbo V8, while later ones switched to the 3.0L biturbo V6, both delivering strong performance. The platform introduced a more refined ride and better interior quality than the X164. These are well-rounded, comfortable three-row luxury SUVs at very attractive used prices.



This is the budget-conscious buyer's entry into the modern GLS platform. It trades the newer GLS 580's technology and power for substantial savings. Compared to the 2017-2019 GLS 450 above, it lacks the 9-speed transmission and the GLS nameplate but shares the same core bones. Inspect the air suspension and 7G-Tronic transmission carefully, as these are the primary cost risks on this generation.

## 5. 2020-2023 AMG GLS 63

The 2020-2023 AMG GLS 63 ranks fifth because it is the performance flagship, packing a hand-built 4.0L twin-turbo V8 with 603 hp. It launches this seven-seat SUV to 60 mph in about 4.1 seconds, an astonishing feat for its size. AMG Active Ride Control and a sport-tuned 9-speed transmission sharpen the handling without sacrificing three-row practicality. This is the ultimate expression of the GLS formula.

![Best Mercedes-Benz GLS Model Years (Ranked) in 2027 — figure 2](/assets/qa/ca0646-b2.jpg)


This is for buyers who demand supercar pace with family-friendly space. It trades the GLS 580's relative efficiency for extreme performance and much higher running costs. Compared to the 2013-2016 GL 450 below, it is vastly more powerful and technologically advanced. Buy only with full maintenance records and a thorough inspection of the suspension and turbos, as repair bills are severe.

## 6. 2017-2019 GLS 550

The 2017-2019 GLS 550 ranks sixth because it offers a 4.7L biturbo V8 with 449 hp, delivering smooth, abundant power. It pairs this engine with the 9-speed automatic, providing a more authoritative highway demeanor than the 450. The luxurious three-row cabin is identical to the 450, making it a compelling V8 alternative. Depreciation makes these V8 flagships tempting on the used market.





This is for buyers who value effortless V8 power and are prepared for higher fuel and maintenance costs. It trades the GLS 450's efficiency for stronger acceleration and a more commanding presence. Compared to the 2020-2023 AMG GLS 63 above, it is significantly less extreme but also far more affordable. Verify the air suspension, check for oil leaks, and confirm service intervals were honored before purchase.

## 7. 2013-2016 GL 350 BlueTEC

The 2013-2016 GL 350 BlueTEC ranks seventh because it offers the best fuel economy in the lineup with a torque-rich 3.0L turbo-diesel V6. It pairs this engine with the 7-speed automatic, delivering strong towing capability and long-distance cruising ability. The diesel's low-end torque makes it a quiet, relaxed highway companion. This is the most efficient way to own a three-row Mercedes luxury SUV.

![Best Mercedes-Benz GLS Model Years (Ranked) in 2027 — figure 3](/assets/qa/ca0646-b3.jpg)


This is for high-mileage owners who prioritize efficiency and towing over outright performance. It trades the GL 450's V8 smoothness for diesel economy and durability. Compared to the 2017-2019 GLS 550 above, it is far more frugal but requires careful attention to diesel-specific maintenance. Verify the AdBlue/SCR system, injectors, and emissions recall history, as neglected examples can be costly to repair.

## 8. 2013-2016 GL 550

The 2013-2016 GL 550 ranks eighth because it offered the 4.6L biturbo V8 with 429 hp before the GLS rename. It combines strong acceleration with the X166 platform's improved efficiency and refinement over the X164. The three-row cabin is luxurious and spacious, with standard 4MATIC all-wheel drive. This is an affordable way to get V8 muscle in a modern Mercedes SUV.



This is for buyers who want V8 performance in a depreciated luxury SUV and are prepared for upkeep costs. It trades the GL 350 BlueTEC's efficiency for significantly more power. Compared to the 2017-2019 GLS 550 above, it is older and less refined but also cheaper. Buy only with comprehensive service records, as air suspension, turbochargers, and 7G-Tronic issues can lead to steep repair bills.

## 9. 2010-2012 GL 450

The 2010-2012 GL 450 ranks ninth as the refreshed X164 generation, bringing updated styling and improved interior materials. Its 4.6L V8 produces around 335 hp, paired with the 7-speed automatic transmission. This model established the three-row, body-on-frame-adjacent luxury SUV formula with serious off-road and towing ability. These are now aging vehicles available at very low prices.



This is for budget buyers who are prepared for potential repairs on an older luxury SUV. It trades the 2013-2016 GL 550's modern platform for significant savings. Compared to the 2013-2016 GL 350 BlueTEC above, it is less efficient but simpler in its maintenance. Inspect for air suspension faults, rust in salt-belt states, and worn electronics, as Mercedes repairs can be expensive.

![Best Mercedes-Benz GLS Model Years (Ranked) in 2027 — figure 4](/assets/qa/ca0646-b4.jpg)


## 10. 2007-2009 GL 320 CDI

The 2007-2009 GL 320 CDI ranks last because it is the oldest and least refined GLS-family vehicle, with the highest maintenance risk. Its 3.0L CDI turbo-diesel V6 offers strong torque and impressive towing capability. The X164 platform provides real off-road hardware and three rows of seating. These early trucks are now budget transportation or project vehicles at best.

This is for buyers who want ruggedness or a very low price and are willing to accept aging components. It trades the 2010-2012 GL 450's V8 smoothness for diesel efficiency and torque. Compared to the 2013-2016 GL 350 BlueTEC above, it is older and less refined, with higher risk of failure. Have a Mercedes specialist inspect the air suspension, transmission, and diesel emissions components thoroughly before purchase.

## How we ranked these

We ranked GLS and GL model years by weighting reliability data from owner-reported issues, air suspension failure frequency, transmission performance, powertrain refinement, cabin technology, and real-world depreciation curves. Safety ratings, NHTSA recall records, and expert reviews from Edmunds and Car and Driver informed scores. The 2020-2023 X167 GLS 450 scored highest for its inline-six smoothness and improved electronics.

We deliberately ignored subjective styling preferences, brand prestige, and dealer markup variations, as these do not reflect long-term ownership value. We also excluded rare AMG variants from top rankings due to prohibitive running costs, and we did not factor in off-road capability, since most buyers never use it. This approach prioritizes practical, data-driven ownership outcomes over emotional appeal.

```mermaid
flowchart TD
  S["Best best mercedes-benz gls model years"]
  S --> R0["1. 2020-2023 GLS 450"]
  S --> R1["2. 2017-2019 GLS 450"]
  S --> R2["3. 2021-2023 GLS 580"]
  S --> R3["4. 2013-2016 GL 450"]
  S --> R4["5. 2020-2023 AMG GLS 63"]
```

## Related questions

### What is the most reliable Mercedes-Benz GLS model year?

The 2020-2023 GLS 450 (X167) is considered the most reliable, featuring a 3.0L inline-six with EQ Boost mild-hybrid assist. This powertrain avoids the heavier maintenance of older V8s, and the updated electronics and MBUX system have fewer issues. Air suspension reliability also improved, making it the safest used choice.

### Which GLS model year has the best fuel economy?

The 2013-2016 GL 350 BlueTEC diesel offers the best fuel economy in the lineup, with a 3.0L turbo-diesel V6 returning up to 26 mpg highway. Among gasoline models, the 2020-2023 GLS 450 inline-six achieves around 21 mpg combined, thanks to the 48-volt mild-hybrid system.

### What is the cheapest GLS model year to maintain?

The 2017-2019 GLS 450 (X166) is generally the cheapest to maintain among reliable options. Its 3.0L biturbo V6 is proven and less complex than V8s, and parts are widely available. Avoid older X164 models, where air suspension and transmission repairs can be frequent and costly.

### Are Mercedes-Benz GLS air suspension problems common?

Yes, air suspension issues are common across all GLS generations, especially on older X164 and early X166 models. Air struts and compressors typically fail between 80,000 and 120,000 miles. Replacement costs can range from $1,500 to $3,000 per corner, so always inspect for sagging or compressor noise before purchase.

### What is the difference between the GLS 450 and GLS 580?

The GLS 450 uses a 3.0L inline-six with 362 hp and EQ Boost, while the GLS 580 has a 4.0L twin-turbo V8 with 483 hp. The 580 offers significantly stronger acceleration and a more authoritative feel, but it carries higher fuel, tire, and maintenance costs. Both share the same luxurious cabin and air suspension.

### Is the Mercedes-AMG GLS 63 reliable?

The AMG GLS 63 is reliable for a high-performance SUV, but its running costs are steep. The hand-built 4.0L twin-turbo V8 is robust, yet brakes, tires, and suspension components wear quickly. Only buy one with full service records and a pre-purchase inspection, as neglect can lead to expensive repairs.

### Should I buy a diesel GL 350 BlueTEC?

The GL 350 BlueTEC is a good choice for high-mileage drivers who want torque and efficiency. Its 3.0L diesel V6 is durable, but the AdBlue/SCR emissions system and injectors can be problematic if not maintained. Verify all emissions recalls were completed and have a specialist inspect it before buying.

### What is the best value GLS model year?

The 2017-2019 GLS 450 (X166) offers the best value, combining a 362-hp twin-turbo V6, a spacious three-row cabin, and modern tech at a steep depreciation discount. It avoids the most expensive issues of older models while delivering near-current luxury, making it the smart-money pick.

## FAQ

**What is the most reliable model year for the Mercedes-Benz GLS?**

The 2020-2023 X167 GLS 450 is widely considered the most reliable, thanks to its smoother inline-six engine with mild-hybrid assist and improved electronics. Earlier models, especially high-mileage X164 GLs, are more prone to air suspension and transmission issues.

**Should I avoid the older GL-Class (X164) models?**

Yes, if you want lower maintenance risk. The X164 models (2007-2012) have aging air suspension systems and 7G-Tronic transmissions that can be costly to repair, and their electronics are dated. They can still be a budget option if you’re prepared for potential repairs.

**Is the AMG GLS 63 worth buying used?**

It can be, but only if you budget for higher running costs. The AMG GLS 63 offers thrilling V8 performance, but its air suspension, brakes, and engine maintenance are more expensive than standard models. Look for a well-maintained 2020-2023 example for the best balance of power and reliability.

**What is the best value GLS model year to buy?**

The 2017-2019 GLS 450 (X166) offers the best value, combining a 362-hp twin-turbo V6, near-current luxury, and a spacious interior at a steep depreciation discount. It avoids the most expensive issues of older models while still being affordable.

**How long does the air suspension typically last on a GLS?**

Air suspension components, like air struts and the compressor, often need attention between 80,000 and 120,000 miles. Replacement costs can range from moderate to high depending on the model year, so it’s a key item to inspect before buying a used GLS.

**Are newer GLS models more expensive to maintain than older ones?**

Generally, yes. While the 2020-2023 X167 models have better reliability, their advanced electronics, MBUX system, and mild-hybrid components can lead to higher repair costs if issues arise. Older models have cheaper parts but more frequent failures.

**What is the towing capacity of a Mercedes-Benz GLS?**

Most GLS models can tow between 7,000 and 7,500 pounds when properly equipped. The diesel GL 350 BlueTEC is particularly strong for towing due to its torque. Always check the owner's manual and ensure the trailer hitch and wiring are in good condition.

**Which GLS model year has the best technology?**

The 2020-2023 X167 models have the best technology, featuring the dual-screen MBUX infotainment system with voice control, over-the-air updates, and advanced driver-assistance features. The 2017-2019 X166 models have COMAND, which is dated but functional. Avoid X164 models for tech.

**What are common problems with the GLS 550?**

The GLS 550's 4.7L biturbo V8 can develop oil leaks from valve cover gaskets and turbocharger lines. Air suspension struts and the 9-speed transmission also require attention. Regular maintenance is critical; check for service records and have a pre-purchase inspection done.

**Is the GLS a good family SUV?**

Yes, the GLS is an excellent family SUV, offering three rows of seating, a spacious cabin, and top safety ratings. The 2020-2023 models have the best second-row comfort with optional executive seats. Just budget for higher running costs compared to mainstream SUVs.

```mermaid
flowchart LR
  A["Choosing best mercedes-benz gls model years"] --> B{"Budget first?"}
  B -->|"No"| C["2020-2023 GLS 450"]
  B -->|"Yes"| D{"Need every feature?"}
  D -->|"Yes"| E["2013-2016 GL 450"]
  D -->|"No"| F["2007-2009 GL 320 CDI"]
```

## Sources

- https://www.mbusa.com/en/vehicles/gls-suv
- https://www.nhtsa.gov/vehicle/2021/MERCEDES-BENZ/GLS%2520450
- https://www.fueleconomy.gov/feg/PowerSearch.do?action=noheaders&year=2021&make=Mercedes-Benz&model=GLS%20450
- https://www.edmunds.com/mercedes-benz/gls-class/
- https://www.kbb.com/mercedes-benz/gls-class/
- https://www.caranddriver.com/mercedes-benz/gls-class
- https://en.wikipedia.org/wiki/Mercedes-Benz_GLS-Class

## Related on PULSE

- [More best mercedes-benz gls model years (ranked) rankings and buying guides](/knowledge)
- [PULSE Tools and calculators](/tools)
- [Everything on PULSE RevOps](/)

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Best Mercedes-Benz GLS Model Years (Ranked) in 2027

1. 2020-2023 GLS 450

2. 2017-2019 GLS 450

3. 2021-2023 GLS 580

4. 2013-2016 GL 450

5. 2020-2023 AMG GLS 63

6. 2017-2019 GLS 550

7. 2013-2016 GL 350 BlueTEC

8. 2013-2016 GL 550

9. 2010-2012 GL 450

10. 2007-2009 GL 320 CDI

How we ranked these

Related questions

What is the most reliable Mercedes-Benz GLS model year?

Which GLS model year has the best fuel economy?

What is the cheapest GLS model year to maintain?

Are Mercedes-Benz GLS air suspension problems common?

What is the difference between the GLS 450 and GLS 580?

Is the Mercedes-AMG GLS 63 reliable?

Should I buy a diesel GL 350 BlueTEC?

What is the best value GLS model year?

FAQ

Sources

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