When should Mercedes-Benz GL550 spark plugs be replaced?

When it’s time to replace the spark plugs, don’t delay. These small (but vital!) parts provide the electric spark that your car needs in order to start, and old spark plugs can prevent your car from starting at all. Replace spark plugs on time or about every 30,000 miles or so.

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

Don't ignore puddles of fluid under your Mercedes-Benz GL550. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.

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 get a tune-up for my Mercedes-Benz GL550?

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 can I go to for 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.

2015 Mercedes-Benz GL550 Engine Tune-Ups & Maintenance

Get a Tune-Up

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

If your GL550 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.

Schedule an Appointment

Enhance Mercedes-Benz GL550 Performance with a Tune-Up

Is it tune-up time? If you tend to ignore your car until something goes wrong, now is the time to work on that habit, especially if you want your 2015 Mercedes-Benz GL550’s engine to last for a long time. Periodic tune-ups can bring more power back to your GL550’s engine. 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 invest in your GL550's long-term health and engine performance.

Routine Engine Tune-Up Service for Your Mercedes-Benz GL550

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 2015 Mercedes-Benz GL550. The first is the standard Firestone Tune-Up. It includes a complete visual inspection of engine components, installation of new spark plugs, and a lifetime warranty on parts*. The second service focuses on your GL550's filters, specifically replacing the air filter and fuel filter. 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 goes a long way in boosting your fuel system’s overall performance. Consider this when choosing a tune-up service for your GL550: your vehicle’s maintenance record and mileage can determine which service is best. 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?

If you’re looking for 2015 GL550 engine tune-up services, head to Firestone Complete Auto Care. Follow Mercedes-Benz's recommended maintenance schedule or book an appointment as soon as you notice one of the following: shaking while the engine is idling, poor fuel economy, engine knocking, or an illuminated check engine light.

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

2015 Mercedes-Benz GL550 Engine Tune-Up Q&A

When should Mercedes-Benz GL550 spark plugs be replaced? When it’s time to replace the spark plugs, don’t delay. These small (but vital!) parts provide the electric spark that your car needs in order to start, and old spark plugs can prevent your car from starting at all. Replace spark plugs on time or about every 30,000 miles or so.
What do I do if I see a pool of liquid under my Mercedes-Benz GL550? Don't ignore puddles of fluid under your Mercedes-Benz GL550. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.
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 get a tune-up for my Mercedes-Benz GL550? 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 can I go to for 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.

2015 Mercedes-Benz GL550 Maintenance

Stay ahead of any potential issues with your Mercedes-Benz GL550 so your car can keep pace with life! Learn more about proper maintenance for your vehicle below.

2015 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 2015 Mercedes-Benz GL550 repairs.