Frequently Asked Questions

Why is an oil change important for a 2023 Mercedes-Benz GLS-Class?

• Protects engine components by lubricating moving parts and reducing wear, preserving the vehicle's performance and longevity.
• Prevents sludge and deposits that can clog oil passages and harm turbochargers and sensors specific to modern Mercedes engines.
• Maintains fuel efficiency and peak horsepower by ensuring proper viscosity and clean oil flow for the inline 6 turbo engine.
• Helps preserve factory warranties—any warranty-covered repairs must be performed at a certified dealership to remain valid.
• Choosing Mercedes-Benz of Sudbury provides OEM parts and factory-trained technicians, often costing less than independent shops while delivering superior diagnostics and long-term savings.

How long does an 2023 Mercedes-Benz GLS-Class oil change take?

• Typical express oil changes at our service center take about 30–60 minutes for a straightforward oil and filter replacement.
• Full service appointments that include multi-point inspections or additional fluids may take 60–90 minutes.
• If diagnostic checks or warranty documentation are needed, allow extra time—our technicians work efficiently with factory tools to minimize wait time.
• Appointments are recommended to guarantee prompt service and reduce on-site wait; same-day service is often available depending on scheduling.

How much does an oil change cost for an 2023 Mercedes-Benz GLS-Class?

• Cost varies by oil type and included services; a full synthetic oil change for a 2023 Mercedes-Benz GLS-Class typically ranges based on required oil volume and filter.
• Mercedes-Benz of Sudbury provides transparent pricing and frequent service specials—our dealership often costs less than independent shops while offering factory-trained technicians and OEM parts.
• Choosing the dealership yields immediate savings through accurate service, fewer callbacks, and long-term savings by protecting engine life and warranty coverage.
• Any repairs covered under warranty must be performed at a certified dealership to remain valid; contact our service team or view current offers at /promotions/service/index.htm for exact pricing and coupons.

How often should you get an oil change?

• Follow the manufacturer’s recommended schedule found in your owner’s manual and the vehicle’s mobile service notifications; for most Mercedes models this is commonly around 10,000 miles or 12 months under normal driving conditions.
• Severe driving conditions—frequent short trips, heavy towing, city stop-and-go, or extreme temperatures—may require intervals as short as 5,000–7,500 miles.
• Regular service at Mercedes-Benz of Sudbury ensures accurate interval tracking, proper service records, and warranty compliance.

What type of oil does an 2023 Mercedes-Benz GLS-Class take?

• The 2023 Mercedes-Benz GLS-Class requires full synthetic motor oil that meets Mercedes-Benz specifications (refer to MB 229.5/229.51 or the specification listed in the owner's manual).
• Our dealership uses OEM-approved oils and genuine filters to ensure proper protection for turbocharged engines and long-term reliability.
• Using the correct MB specification oil supports warranty coverage; any warranty repairs must be completed at a certified dealership.

How much oil does an 2023 Mercedes-Benz GLS-Class need?

• Oil capacity varies with engine and filter change; the inline 3.0L turbo inline-six engine typically requires approximately 8.5–9.5 liters (about 9.0 liters) including the filter—confirm exact capacity in your owner's manual.
• Our technicians measure and top off oil to the precise factory specification and verify levels after the engine reaches operating temperature.
• Accurate filling at the dealership helps avoid overfill/underfill issues and supports long-term engine health and warranty compliance.