What happens if my Mercedes-Benz GLS450 spark plugs fail?

Replace spark plugs on time or about every 30,000 miles or so. Spark plugs are small but mighty. The spark of electricity that the plug emits across a small gap creates the ignition for the combustion needed to start your car. Without that spark, your car won't start.

What should I do if I see leaks under my GLS450?

Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.

Are hard starts and stops bad for my Mercedes-Benz GLS450 engine?

You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.

I need a Mercedes-Benz GLS450 tune-up. Where can I get on?

At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Mercedes-Benz GLS450s.

How often do Mercedes-Benz GLS450 fuel injectors need to be cleaned?

There is no hard and fast rule on how often fuel injectors should be cleaned, and it can vary based on driving habits and fuel type. Some manufacturers may suggest including a fuel system cleaning in your regular maintenance schedule. Or you may need to clean your fuel injectors as needed if you notice signs of a fuel system problem.

Who offers Mercedes-Benz GLS450 tune-ups?

Visit your nearby Firestone Complete Auto Care for Mercedes-Benz GLS450 tune-ups and more. Schedule your appointment online and save big by checking out our latest offers.

2018 Mercedes-Benz GLS450 Engine Tune-Ups & Maintenance

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Schedule an Appointment for Your Mercedes-Benz GLS450 Tune-Up

If your GLS450 is acting strange or making new noises, it could be engine tune-up time. Don’t wait until small problems get bigger. Make an appointment now.

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Tune-Ups to Help Your Mercedes-Benz GLS450 Run Better

Is your engine overdue for a tune-up? If you usually wait until your car has an issue to take it in for service, it might be time to change your ways, especially if you want your 2018 Mercedes-Benz GLS450’s engine to last for a long time. Routine engine tune-ups can bring power back to your GLS450. Tune-ups help your engine start smoothly and run efficiently, so you can enjoy improved fuel economy and lower emissions. When you take your car for regular engine tune-ups as recommended by Mercedes-Benz, you invest in your GLS450's long-term health and engine performance.

Routine Engine Tune-Up Service for Your Mercedes-Benz GLS450

Your nearest Firestone Complete Auto Care location has several options to choose from when it comes to Mercedes-Benz GLS450 engine tune-up services. The standard Firestone Tune-Up is one service option. This includes the installation of new spark plugs and a visual inspection of your engine’s components, plus a lifetime warranty on parts*. The second service focuses on your GLS450's filters, specifically replacing the air filter and fuel filter. Yet another service is a fuel system cleaning process, which involves removing varnish, dirt, and carbon deposits that have built up inside the fuel injectors, throttle body, and throttle plate in your GLS450. This can improve your fuel system’s performance (and therefore, your engine’s performance). Consider this when choosing a tune-up service for your GLS450: your vehicle’s maintenance record and mileage can determine which service is best. If you’re not sure what services are the best fit for your car, let us help! Ask one of our technicians what your vehicle needs, based on your driving habits and your car’s current condition.

Where Should I Go for My Mercedes-Benz GLS450 Tune-Up?

Come to Firestone Complete Auto Care for your next 2018 GLS450 engine tune-up. Consult your vehicle’s recommended service schedule from Mercedes-Benz, or make a service appointment if you notice any of these symptoms from your engine: decreased gas mileage, "rough" idling or stalling when stopped, an illuminated check engine light on your dashboard, or a knocking sound when the engine is running.

*Talk to a Firestone Complete Auto Care teammate for full terms and conditions on warranties.

2018 Mercedes-Benz GLS450 Engine Tune-Up Q&A

What happens if my Mercedes-Benz GLS450 spark plugs fail? Replace spark plugs on time or about every 30,000 miles or so. Spark plugs are small but mighty. The spark of electricity that the plug emits across a small gap creates the ignition for the combustion needed to start your car. Without that spark, your car won't start.
What should I do if I see leaks under my GLS450? Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.
Are hard starts and stops bad for my Mercedes-Benz GLS450 engine? You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.
I need a Mercedes-Benz GLS450 tune-up. Where can I get on? At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair Mercedes-Benz GLS450s.
How often do Mercedes-Benz GLS450 fuel injectors need to be cleaned? There is no hard and fast rule on how often fuel injectors should be cleaned, and it can vary based on driving habits and fuel type. Some manufacturers may suggest including a fuel system cleaning in your regular maintenance schedule. Or you may need to clean your fuel injectors as needed if you notice signs of a fuel system problem.
Who offers Mercedes-Benz GLS450 tune-ups? Visit your nearby Firestone Complete Auto Care for Mercedes-Benz GLS450 tune-ups and more. Schedule your appointment online and save big by checking out our latest offers.

Maintenance for Your 2018 Mercedes-Benz GLS450

We know it’s not just a car, it’s your car. We’ll help you properly maintain your Mercedes-Benz GLS450 to keep it on the road and running smoothly. Learn more about maintenance below.

Repairs on Your 2018 Mercedes-Benz GLS450

Nothing lasts forever. Even your Mercedes-Benz GLS450's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2018 Mercedes-Benz GLS450 repairs.