The Mercedes-Benz GL350 BlueTec, a full-size luxury SUV, offered a blend of comfort, capability, and fuel efficiency thanks to its diesel engine. However, not all model years were created equal. This guide will help you navigate the GL350 BlueTec landscape, highlighting the best years to consider and those that might be best avoided, ensuring you make an informed purchase decision.
GL350 BlueTec Model Year Overview
| Model Year | Key Features & Improvements | Potential Issues & Considerations |
|---|---|---|
| 2013 | Introduction of the GL350 BlueTec with 3.0L V6 diesel engine, 7-speed automatic transmission, standard features like COMAND system, heated front seats, and rearview camera. | Early model years might have software glitches or sensor issues. Check for AdBlue system problems. |
| 2014 | Minor updates to interior trim and optional equipment packages. | Same potential issues as 2013, including AdBlue system and sensor problems. |
| 2015 | Introduction of the 9-speed automatic transmission (late in the model year), improved fuel economy. | Potential for issues with the new 9-speed transmission in early production models. Continue to monitor AdBlue system. |
| 2016 | Final year of the GL350 BlueTec before the model was renamed to GLS350d. Minor cosmetic updates. | Generally considered a reliable year, but still requires thorough inspection and maintenance records review. AdBlue system should be checked. |
Detailed Explanations
2013: The 2013 GL350 BlueTec marked the introduction of the diesel variant to the GL-Class lineup. It featured a 3.0L V6 diesel engine paired with a 7-speed automatic transmission. Standard features included the COMAND infotainment system, heated front seats, a rearview camera, and ample cargo space. However, being the first model year, it's crucial to meticulously inspect for any early production issues, including software glitches or sensor failures.
2014: The 2014 model year saw minor updates, primarily focusing on interior trim and optional equipment packages. Mechanically, it remained largely unchanged from the 2013 model. Therefore, the potential issues are similar. Paying close attention to the AdBlue system and ensuring it functions correctly is paramount.
2015: A significant upgrade arrived in 2015 with the introduction of the 9-speed automatic transmission, although this change occurred later in the model year. This new transmission improved fuel economy and overall driving experience. However, with any new transmission, there's a possibility of early production issues. Thoroughly researching the specific production date is recommended if considering a 2015 model.
2016: The 2016 GL350 BlueTec represents the final year before the GL-Class was rebranded as the GLS-Class (and the diesel version became the GLS350d). It received minor cosmetic updates. Generally, the 2016 model is considered the most reliable of the GL350 BlueTec years, as many of the initial production kinks had been worked out. Despite this, a comprehensive inspection and review of maintenance records are essential before purchasing.
AdBlue System: The AdBlue system, also known as the Selective Catalytic Reduction (SCR) system, is crucial for reducing NOx emissions in diesel vehicles. It injects a urea-based solution (AdBlue) into the exhaust stream, which reacts with the NOx to convert it into harmless nitrogen and water. Problems with the AdBlue system can lead to warning lights, reduced engine performance, and even prevent the vehicle from starting. Regular maintenance and monitoring of the AdBlue level are essential.
7-Speed Automatic Transmission: The 7-speed automatic transmission, used in the 2013 and early 2015 models, was a reliable unit. However, it's crucial to ensure it has been properly maintained with regular fluid changes. Signs of potential problems include rough shifting, slipping gears, or unusual noises.
9-Speed Automatic Transmission: The 9-speed automatic transmission, introduced in late 2015 models, offered improved fuel economy and smoother shifting compared to the 7-speed. However, as a newer design, it's important to be aware of potential early production issues. Test driving and listening for any unusual noises or hesitant shifting are crucial.
COMAND System: The COMAND system is Mercedes-Benz's infotainment system, controlling navigation, audio, and other vehicle functions. While generally reliable, older versions can sometimes experience software glitches or slow response times. Ensure all features are functioning correctly before purchasing.
Sensor Issues: Modern vehicles rely heavily on various sensors to monitor engine performance, emissions, and other systems. Faulty sensors can trigger warning lights and affect vehicle performance. A diagnostic scan can help identify any potential sensor issues.
Frequently Asked Questions
Which GL350 BlueTec year is the most reliable? Generally, the 2016 model year is considered the most reliable due to fewer reported issues and refinements over the earlier years.
What are the most common problems with the GL350 BlueTec? Common issues include AdBlue system problems, sensor failures, and potential transmission issues (especially with the early 9-speed models).
How often should I change the AdBlue fluid? The AdBlue fluid level should be checked regularly and refilled as needed. The interval varies depending on driving conditions, but typically it's every 10,000 to 20,000 miles.
What is the fuel economy of the GL350 BlueTec? The GL350 BlueTec typically achieves around 20 mpg in the city and 26 mpg on the highway, depending on driving conditions and the specific model year.
Is the GL350 BlueTec expensive to maintain? Being a luxury SUV, the GL350 BlueTec can be more expensive to maintain than non-luxury vehicles. Regular maintenance, including oil changes, fluid checks, and potential repairs, should be factored into the ownership cost.
Conclusion
Choosing the right year of the Mercedes-Benz GL350 BlueTec can significantly impact your ownership experience. While the 2016 model is generally considered the most reliable, all model years require thorough inspection and maintenance. By carefully considering the potential issues and focusing on well-maintained examples, you can enjoy the comfort, capability, and fuel efficiency that the GL350 BlueTec offers.