2020 Mercedes-Benz GLS-Class Air Filter in Sudbury, MA

The engine air filter sits inside a sealed airbox in the engine bay, while the cabin air filter is typically behind the glove box in the HVAC housing.

This layout allows the 3.0L turbocharged inline-6 to draw clean, metered intake air and keeps the passenger compartment free of dust and pollen. If you’d like a quick confirmation, our technicians at Mercedes-Benz of Sudbury can show you both filter locations during an appointment. Book a convenient time online to ensure factory-fit replacements.

• Engine air filter: sealed airbox in the engine compartment
• Cabin microfilter: behind glove box/HVAC access panel
• Need help? Schedule service for your inspection

The engine air filter cleans intake air for combustion, while the cabin air filter cleans air entering the HVAC for passengers.

On the 2020 Mercedes-Benz GLS-Class, the engine filter helps safeguard the turbocharger, mass airflow sensor, and cylinders, supporting power delivery and fuel economy. The cabin filter reduces dust and allergens inside the SUV, improving comfort for everyone onboard. Replacing both on schedule preserves performance and in-cabin air quality.

• Engine filter: protects the 3.0L inline-6 turbo’s intake system
• Cabin filter: improves HVAC airflow and air quality
• OEM-spec parts help ensure proper fit and sealing

Reduced power, lower fuel economy, and rough idle indicate an engine filter issue; weak HVAC airflow or musty odors point to a cabin filter problem.

If your GLS-Class feels sluggish or the climate control struggles, it may be time to inspect both filters. Local driving in Greater Boston can add debris and fine dust that load filters faster. Our team can assess condition and fit OEM replacements to restore proper airflow.

• Engine: hesitation, poorer MPG, or unusual intake sounds
• Cabin: diminished fan output, odors, or more window fogging
• Get a quick check: schedule service in Sudbury

Yeshe engine filter is usually DIY-friendly, but the cabin filter often requires glove box/trim access; our technicians handle both and inspect the intake and MAF.

Many owners can access the engine airbox with basic tools, but ensuring the housing seals and clips are seated is critical. For the cabin side, interior panels and tight clearances make a professional install more convenient. Dealer service also includes proper disposal and OEM-spec fitment.

• DIY: engine air filter only if youre comfortable with clips and seals
• Dealer: cabin filter access, MAF visual, housing/gasket check
• Book online: schedule service at Mercedes-Benz of Sudbury

YesMercedes-Benz of Sudbury installs OEM-spec Mercedes-Benz filters matched to the 2020 GLS-Class.

Genuine-spec parts help maintain intake sealing, correct airflow, and HVAC performance for your luxury SUV. Youll receive documentation on the work performed for your records. Check current offers before you come in to maximize value on routine maintenance.

• OEM-spec fitment for GLS-Class engine and cabin systems
• Installed by brand-trained technicians
• See current service specials before you book

Follow the Mercedes-Benz maintenance schedule in your owners manual for the 2020 GLS-Class cabin air filter interval.

Intervals vary based on driving conditions such as stop-and-go traffic or exposure to dust and pollen around Greater Boston. If airflow weakens or odors develop sooner, replace early to restore HVAC performance. Our team can inspect and advise during your visit.

• Use the factory schedule as your baseline
• Replace earlier if airflow drops or odors persist
• Need guidance? Schedule an appointment in Sudbury

Use the factory maintenance schedule for the 2020 GLS-Class engine air filter, adjusting based on your driving conditions.

The turbocharged 3.0L inline-6 benefits from clean intake air to support 362 hp and 369 lb-ft of torque. Frequent short trips or dusty routes can shorten replacement timelines. We can check filter condition during routine visits and recommend the right interval for your usage.

• Consult the 2020 GLS-Class owners manual for the schedule
• Inspect sooner if power or fuel economy declines
• Schedule service at Mercedes-Benz of Sudbury

The 2020 GLS-Class cabin air filter is typically located behind the glove box within the HVAC housing.

This position allows efficient filtering of outside air before it enters the vents. Due to trim panels and tight clearances, many owners prefer professional replacement to avoid damage to clips and panels. We can access and replace the filter quickly and verify proper airflow.

• Behind the glove box in the HVAC air path
• Interior panel access may be required
• Book a quick visit: schedule service in Sudbury

Engine and cabin air filter pricing is posted on our online service menu for Sudbury, MA so you see parts and labor up front before you book.

Costs can vary by filter specification and local taxes. Youll receive OEM-spec parts, proper installation, and disposal of the old filters. For added value, review current offers before you schedule.

• Up-front pricing: check the service menu when you schedule service
• Includes OEM-spec filter, housing/MAF visual, and disposal
• Review service specials for potential savings

Your 2020 Mercedes-Benz GLS-Class benefits from a methodical process designed for OEM performance and in-cabin comfort. First, we verify access and inspect the engine airbox, seals, and fasteners for damage or debris. The engine air filter is removed, the housing is wiped clean, and a new OEM-spec filter is installed with correct orientation and seal seating. Next, we access the cabin filter behind the glove box, check the HVAC entry path, and replace the cabin media as specified. A visual mass airflow (MAF) sensor check and intake duct inspection are performed, and we confirm HVAC and intake airflow. Documentation of parts used is added to your service record. Parts and labor warranty terms are provided on your repair order. If youre exploring offers, see our current service specials. Ready to book? Use our online tool to schedule service.

Mercedes-Benz of Sudbury serves drivers in Sudbury, Concord, Framingham, Wellesley, and the Greater Boston area with air filter service tailored to your 2020 Mercedes-Benz GLS-Class. Local stop-and-go traffic, construction dust, and seasonal debris can load both the engine and cabin filters sooner than expected. Our team will inspect condition and fit OEM-spec replacements to help maintain throttle response, fuel efficiency, and clean cabin air on every trip. You can plan your visit online and arrive at our facility at 141 Boston Post Road, Route 20, Sudbury, Massachusetts. For clear next steps, view offers and then schedule service at a time that works for you.

The 2020 Mercedes-Benz GLS-Class features a 3.0L turbocharged inline-6 (premium unleaded required) rated at 362 hp at 5,500 rpm and 369 lb-ft at 1,600 rpm, which relies on a clean engine air filter to protect the intake tract and mass airflow sensor. The cabin air filter helps keep HVAC airflow steady and passenger air fresher. Use the factory maintenance schedule in your owners manual as your baseline and adjust based on driving conditions. Choosing OEM-spec filters supports proper sealing, filtration efficiency, and fitment for the GLS platform. Bring your 2020 Mercedes-Benz GLS-Class to Mercedes-Benz of Sudbury in Sudbury for OEM-spec filter service schedule service.