The Mercedes-Benz GLS550, a luxury SUV offering both performance and comfort, has been a popular choice for families and individuals seeking a premium driving experience. However, like any vehicle, some model years are more reliable and desirable than others. This guide aims to provide potential buyers with the information they need to make an informed decision, highlighting the best GLS550 years and those to potentially avoid.
GLS550 Model Year Comparison Table
| Feature/Concern | 2017-2019 (Facelift Model) | 2013-2016 (Pre-Facelift Model) |
|---|---|---|
| Engine Performance & Reliability | Generally reliable, 4.7L biturbo V8 engine, known for strong performance. Some reports of oil leaks at higher mileage. | Generally reliable, 4.7L biturbo V8 engine. Higher incidence of oil leaks and turbocharger issues reported compared to facelift model. |
| Transmission | 9G-TRONIC 9-speed automatic transmission (smoother shifting). | 7G-TRONIC 7-speed automatic transmission (can feel slightly less refined). |
| Technology & Features | Updated infotainment system (COMAND) with Apple CarPlay and Android Auto integration. Driver assistance features like Active Brake Assist and Lane Keeping Assist are more refined. Available massaging seats and upgraded audio systems. | Older COMAND system, lacking Apple CarPlay and Android Auto. Driver assistance features less advanced. |
| Suspension & Ride Quality | AIRMATIC air suspension offers excellent ride comfort and handling. Some reports of air suspension component failures (especially at higher mileage). | AIRMATIC air suspension offers good ride comfort, but can experience similar air suspension component failures. |
| Common Issues & Maintenance | Potential oil leaks, occasional air suspension issues, regular maintenance required for turbochargers. More readily available parts due to being a newer model. | Oil leaks, turbocharger issues, air suspension problems, potential for more costly repairs due to age and wear. Older electronics can be prone to failure. |
| Fuel Economy | EPA estimated 14 MPG city / 19 MPG highway | EPA estimated 14 MPG city / 18 MPG highway |
| Safety Features | Advanced driver-assistance systems like active blind spot assist, lane keeping assist, and pre-safe braking system. | Standard safety features, but lacks some of the more advanced driver-assistance systems found in later models. |
| Resale Value | Generally holds value better due to newer technology and features. | Lower resale value due to age and potential maintenance concerns. |
| Interior Quality & Design | Updated interior design with improved materials and a more modern aesthetic. | Good interior quality, but design appears dated compared to the facelift model. |
| Overall Reliability | Generally more reliable due to improvements made in the facelift. | Can be reliable with proper maintenance, but higher risk of issues related to age and wear. |
Detailed Explanations
Engine Performance & Reliability:
The 4.7L biturbo V8 engine is the heart of the GLS550, delivering impressive power and acceleration. Both the pre-facelift (2013-2016) and facelift (2017-2019) models utilize this engine. While generally reliable, oil leaks are a common concern, particularly in older models. Turbocharger issues are also more frequently reported in the pre-facelift models. The facelifted GLS550 benefited from minor engine refinements that contributed to increased reliability.
Transmission:
The 2017-2019 GLS550 features the 9G-TRONIC 9-speed automatic transmission. This transmission offers smoother and quicker gear changes compared to the 7G-TRONIC 7-speed automatic found in the 2013-2016 models. The 9-speed transmission also contributes slightly to improved fuel economy.
Technology & Features:
The facelifted GLS550 (2017-2019) boasts a significantly updated infotainment system (COMAND) with Apple CarPlay and Android Auto integration, a feature absent in the pre-facelift models. Driver assistance features like Active Brake Assist and Lane Keeping Assist are also more advanced and refined in the newer models. The availability of options like massaging seats and upgraded audio systems further enhances the driving experience.
Suspension & Ride Quality:
All GLS550 models are equipped with the AIRMATIC air suspension system, providing exceptional ride comfort and handling. However, air suspension systems are inherently complex and prone to component failures, especially at higher mileage. Replacing air struts and compressors can be costly. Regular inspection and maintenance are crucial to prolong the life of the air suspension.
Common Issues & Maintenance:
Beyond the oil leaks and air suspension problems, the GLS550 requires regular maintenance, particularly for the turbochargers. Neglecting maintenance can lead to more significant and expensive repairs down the line. Pre-facelift models, due to their age, may also experience issues with older electronics.
Fuel Economy:
Fuel economy for the GLS550 is not a strong point, as expected from a large SUV with a powerful V8 engine. The EPA estimates are relatively similar between the pre-facelift and facelift models, with around 14 MPG city and 18-19 MPG highway. Real-world fuel economy can vary depending on driving habits and conditions.
Safety Features:
The 2017-2019 GLS550 benefits from more advanced driver-assistance systems such as active blind spot assist, lane keeping assist, and pre-safe braking system. These features provide an extra layer of safety and driver convenience. While the pre-facelift models offer standard safety features, they lack the sophistication of the newer systems.
Resale Value:
Generally, the 2017-2019 GLS550 models hold their value better than the pre-facelift versions due to their newer technology, updated design, and perceived higher reliability. However, mileage, condition, and maintenance history all play a significant role in determining resale value.
Interior Quality & Design:
The facelifted GLS550 features an updated interior design with improved materials and a more modern aesthetic. The pre-facelift models offer good interior quality, but the design appears dated in comparison. The newer models also benefit from enhanced ergonomics and improved overall comfort.
Overall Reliability:
While both the pre-facelift and facelift GLS550 models can be reliable with proper care and maintenance, the 2017-2019 models generally offer greater reliability due to improvements made during the facelift. The newer technology and refined components contribute to a reduced risk of major issues.
Frequently Asked Questions
- Which GLS550 year is the most reliable? The 2017-2019 models (facelift) are generally considered more reliable due to design refinements and updated technology.
- What are the common problems with the GLS550? Oil leaks, air suspension issues, and turbocharger problems are the most frequently reported concerns.
- Is the GLS550 expensive to maintain? Yes, as a luxury SUV, the GLS550 can be expensive to maintain, especially when dealing with air suspension or turbocharger repairs.
- Does the GLS550 have Apple CarPlay and Android Auto? Only the 2017-2019 models (facelift) have Apple CarPlay and Android Auto integration.
- How is the fuel economy on the GLS550? Fuel economy is relatively poor, averaging around 14 MPG city and 18-19 MPG highway.
- Is the air suspension reliable on the GLS550? The air suspension provides excellent ride comfort but is prone to failures, especially at higher mileage.
- Are parts readily available for the GLS550? Parts are generally readily available, particularly for the 2017-2019 models.
- Is it worth buying a used GLS550? A used GLS550 can be a good value if you choose a well-maintained model with a clean history and are prepared for potential maintenance costs.
Conclusion
While all GLS550 models offer a luxurious driving experience, the 2017-2019 facelift models are generally the best choice due to their improved technology, refined design, and increased reliability. However, regardless of the year, a thorough pre-purchase inspection by a qualified mechanic is crucial to identify any potential issues and ensure you're making a sound investment. Always prioritize a well-maintained vehicle with a comprehensive service history to minimize the risk of costly repairs.