2018 Mercedes-Benz GLS-Class Air Filter in Lynnfield, MA

It’s housed in the under-hood airbox on the driver-side of the engine bay, while the cabin filter sits behind the glove box.

This layout allows quick access for routine inspections on the 2018 Mercedes-Benz GLS-Class and keeps the cabin filter near the HVAC intake for effective dust and pollen capture. For a clean, tool-correct service, our Lynnfield team can inspect both filters and reseal the airbox to factory fit. Proper seating prevents unfiltered air bypass—important for the twin-turbo V6.

• Engine filter: driver-side airbox in the engine bay
• Cabin filter: behind glove box, near HVAC intake
• Sealing surfaces checked to prevent intake leaks

The engine air filter feeds the 3.0L twin-turbo V6 intake, while the cabin air filter cleans air entering the HVAC vents for passengers.

In your 2018 Mercedes-Benz GLS-Class, the engine filter protects the turbochargers and mass air flow sensor from dust and debris. The cabin filter targets particulates and odors to improve breathing comfort in the three-row interior. Both do distinct jobs, and both need periodic inspection to maintain performance and air quality.

• Engine: protects intake, turbos, and MAF from debris
• Cabin: reduces dust, allergens, and odors in vents
• Different locations, service steps, and media types

Common signs include reduced power, worse fuel economy, rough idle, weak HVAC airflow, and a musty odor from the vents.

A dirty engine filter can limit airflow to the 6VTTG3.0 powerplant, causing hesitation or a sluggish throttle. A clogged cabin filter restricts blower output and can allow damp, stale smells. If you notice any of these symptoms in your 2018 Mercedes-Benz GLS-Class, have both filters inspected promptly to avoid compounding issues.

• Noticeable drop in acceleration or responsiveness
• HVAC fan feels weaker at usual settings
• Musty odor after start-up or A/C use

Yes—the engine air filter is typically DIY-friendly, but the cabin filter often requires glove-box and trim removal.

Many owners can handle the engine filter if they’re comfortable opening the airbox and properly reseating the seal. The cabin filter on a 2018 Mercedes-Benz GLS-Class is more involved and benefits from correct panel removal and reinstallation. Dealer service also includes intake and MAF checks and confirming OEM-spec fit, which helps avoid noise or air leaks.

• Engine filter: quick, tool-light DIY for experienced owners
• Cabin filter: tighter access with interior trim
• Dealer adds intake/MAF inspection and OEM fitment

Yes—Mercedes-Benz of Lynnfield installs genuine Mercedes-Benz OEM engine and cabin air filters for the 2018 Mercedes-Benz GLS-Class.

Our factory-certified, OEM-trained technicians service your GLS-Class using parts engineered for exact fit and filtration performance. This helps protect the twin-turbo V6 and ensures quiet HVAC operation. Using authentic parts also supports long-term reliability and proper airflow calibration.

• Genuine Mercedes-Benz filters for engine and cabin
• Exact fit to GLS-Class housings and seals
• Installed by factory-certified technicians

Book online using our Schedule Service tool or visit 385 Broadway (Route 1 North), Lynnfield, MA 01940.

Online scheduling is the fastest way to reserve a time that works for you. If you live in Peabody, Wakefield, Saugus, Danvers, Swampscott, Salem, Reading, or Boston, our Route 1 North location is easy to reach. You can also check current offers before you arrive.

• Schedule now: schedule service
• See deals: service specials
• Address: 385 Broadway, Lynnfield, MA 01940

Yes—we include a visual MAF sensor and intake housing inspection during 2018 Mercedes-Benz GLS-Class air filter service.

This quick check looks for debris, oil contamination, or loose clamps that can skew airflow readings on the 3.0L twin-turbo V6. It’s a simple step that supports smooth idle quality and accurate fuel trims. If we see anything concerning, we’ll document it and review next steps with you.

• Visual MAF and intake boot inspection
• Airbox seal fitment verified after filter install
• Findings shared with photos when applicable

It’s behind the glove box, and access typically requires removing trim panels to reach the HVAC housing.

Because the cabin filter sits upstream of the blower, it’s placed for maximum dust and pollen capture. On the 2018 Mercedes-Benz GLS-Class, careful panel removal helps avoid clips or squeaks later. If you prefer a seamless experience, our Lynnfield team can replace it and confirm quiet HVAC operation.

• Installed near HVAC intake for effective filtration
• Interior access requires gentle trim handling
• Noise-free reassembly verified after service

The 2018 Mercedes-Benz GLS-Class uses a panel-style engine air filter and a cabin particulate filter, with an available activated-charcoal option.

The panel-style engine filter supports ample airflow for the 362-hp, 369-lb-ft twin-turbo V6 while trapping fine dust. The cabin filter is designed to reduce particulates; some versions add odor-absorbing carbon. We’ll verify which filter set your vehicle currently uses and match it with OEM-spec replacements.

• Engine: panel design for high-flow protection
• Cabin: particulate media; carbon option available
• OEM-spec filtration to maintain performance

During a 2018 Mercedes-Benz GLS-Class air filter visit, our factory-certified team follows a clear, OEM-aligned process. We begin with a condition check of the engine air filter and cabin air filter, documenting debris load and seal integrity. If replacement is due, we install genuine Mercedes-Benz filters and verify the airbox cover torque and gasket seating. The intake tract and air ducts are inspected for cracks or loose clamps, and we perform a visual check of the mass air flow sensor. For the cabin, we carefully remove trim, seat the new filter in the HVAC housing, and confirm quiet, even airflow. We’ll also review your maintenance booklet and note upcoming items. Ready to go? Use our online schedule service to book a convenient time.

The 2018 Mercedes-Benz GLS-Class pairs a panel-style engine air filter with a cabin particulate filter designed for the vehicle’s three-row interior and HVAC capacity. Genuine Mercedes-Benz filters provide precise fitment for the 3.0L twin-turbo V6 (engine code 6VTTG3.0), helping maintain smooth idle quality and consistent fuel trims. Cabin filters are available in particulate or activated-charcoal media for added odor reduction. Follow the maintenance guidance in your factory schedule; severe driving (short trips, dusty routes) may require more frequent inspections. Our team confirms correct orientation, gasket compression, and housing latches to prevent bypass or whistling. Bring your 2018 Mercedes-Benz GLS-Class to Mercedes-Benz of Lynnfield in Lynnfield for OEM-spec filter service — schedule service.

Mercedes-Benz of Lynnfield serves drivers across the North Shore, including Peabody, Wakefield, Saugus, Danvers, Swampscott, Salem, Reading, and Greater Boston. Local stop-and-go routes and seasonal debris can load filters faster, so brief inspections during oil changes are smart for the 2018 Mercedes-Benz GLS-Class. Our OEM-trained technicians handle both engine and cabin filters with attention to sealing surfaces, airflow direction, and interior trim quality. You can book online in minutes and review current promotions before your visit. Find us at 385 Broadway (Route 1 North), Lynnfield, MA 01940. For convenience, reserve a time now via schedule service and check service specials for potential savings.