Will it hurt my Mercedes-Benz GL550 to drive with old spark plugs?

Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on Mercedes-Benz’s recommendations.

What do I do if I see a pool of liquid under my Mercedes-Benz GL550?

Puddles could indicate an oil leak, coolant leak, or brake fluid leak– all of which can critically hurt your engine. Have your engine inspected as soon as you spot a pool of liquid in your usual parking spot.

What do hard starts and stops do to my GL550 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.

Where can I have a Mercedes-Benz GL550 tune-up done?

At your nearby Firestone Complete Auto Care! Whether you need Mercedes-Benz GL550 service, maintenance, or repairs, our technicians can get the job done.

How often should I clean my Mercedes-Benz GL550 fuel injectors?

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 GL550 tune-ups?

Visit your local Firestone Complete Auto Care for your Mercedes-Benz GL550 tune-up. Make an appointment online and view our latest offers to save big.

2014 Mercedes-Benz GL550 Tune-Up & Engine Service

Get a Tune-Up

Schedule an Appointment for Your Mercedes-Benz GL550 Tune-Up

Tune in to tune up. Listen to your GL550 and schedule an engine tune-up at the first strange squeak, clunk, or click. Make an appointment today.

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Tune Into Your Mercedes-Benz GL550

Is it tune-up time? If you're the type of driver who waits for something to go wrong with your vehicle, it might be time to change your ways, especially if you want your 2014 Mercedes-Benz GL550’s engine to last for a long time. Routine engine tune-ups can bring power back to your GL550. Tune-ups give your engine a boost in efficiency, so you can enjoy improved fuel economy and lower emissions. When you get routine engine tune-ups based on Mercedes-Benz's recommendations, you can rest assured you’re investing in your GL550’s long-term engine performance.

Engine Tune-Up for Mercedes-Benz GL550

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 2014 Mercedes-Benz GL550. The standard Firestone Tune-Up is one service option. The standard Firestone Tune-Up includes new spark plugs (and installation!), a thorough inspection of engine components, and a lifetime parts warranty*. A second service option replaces the air and fuel filter in your GL550. The third tune-up option is a fuel system cleaning service, which is a three-step process that removes varnish, dirt, and carbon deposits on your GL550's fuel injectors, throttle body, and throttle plate. This can improve your fuel system’s performance (and therefore, your engine’s performance). Here’s something to remember when choosing services: the mileage and service history of your GL550 can determine what kind of service it needs. A one-size-fits-all engine tune-up procedure doesn’t necessarily exist. 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 GL550 Tune-Up?

Schedule your next 2014 GL550 engine tune-up service at Firestone Complete Auto Care. 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: shaking while the engine is idling, poor fuel economy, knocking noises in the engine, or a lit up check engine light on your dashboard.

*Check with a teammate at Firestone Complete Auto Care for complete terms and conditions regarding warranties.

Questions About 2014 Mercedes-Benz GL550 Engine Tune-Ups

Will it hurt my Mercedes-Benz GL550 to drive with old spark plugs? Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on Mercedes-Benz’s recommendations.
What do I do if I see a pool of liquid under my Mercedes-Benz GL550? Puddles could indicate an oil leak, coolant leak, or brake fluid leak– all of which can critically hurt your engine. Have your engine inspected as soon as you spot a pool of liquid in your usual parking spot.
What do hard starts and stops do to my GL550 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.
Where can I have a Mercedes-Benz GL550 tune-up done? At your nearby Firestone Complete Auto Care! Whether you need Mercedes-Benz GL550 service, maintenance, or repairs, our technicians can get the job done.
How often should I clean my Mercedes-Benz GL550 fuel injectors? 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 GL550 tune-ups? Visit your local Firestone Complete Auto Care for your Mercedes-Benz GL550 tune-up. Make an appointment online and view our latest offers to save big.

Maintenance for Your 2014 Mercedes-Benz GL550

Take care of your vehicle and it'll take care of you. Click on a service below to learn more about properly maintaining your Mercedes-Benz GL550.

2014 Mercedes-Benz GL550 Repair

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your Mercedes-Benz GL550, we’re here to help. Check out more info below about 2014 Mercedes-Benz GL550 repairs.