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?

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.

Are hard starts and stops bad for my Mercedes-Benz GL550 engine?

Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.

I need a Mercedes-Benz GL550 tune-up. Where can I get on?

At your closest Firestone Complete Auto Care! Our experienced technicians offer Mercedes-Benz GL550 service, maintenance, and repairs.

How often do Mercedes-Benz GL550 fuel injectors need to be cleaned?

The frequency at which car fuel injectors should be cleaned can vary depending on several factors, including the type of fuel used and the driving conditions. Some manufacturers generally recommend a fuel system cleaning as part of your general car maintenance, or as needed based on symptoms of poor fuel system performance.

Who can I go to for Mercedes-Benz GL550 tune-ups?

When your GL550 needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

2008 Mercedes-Benz GL550 Engine Tune-Ups & Maintenance

Get a Tune-Up

Schedule 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

Tune-Ups to Help Your Mercedes-Benz GL550 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 2008 Mercedes-Benz GL550’s engine to last for a long time. Regular engine tune-ups can optimize your GL550’s power on the road. They're designed to help your engine start easier and run more efficiently, which can mean better fuel economy (a win for you) and lower emissions (a win for the environment). 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.

Mercedes-Benz GL550 Engine Tune-Up Services

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 2008 Mercedes-Benz GL550. The standard Firestone Tune-Up is one service option. It includes a complete visual inspection of engine components, installation of new spark plugs, and a lifetime warranty on parts*. Another service option pays special attention to the filters in your GL550. Specifically, we replace the fuel filter and air 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. 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 to Get a Tune-Up for Your Mercedes-Benz GL550

Come to Firestone Complete Auto Care for your next 2008 GL550 engine tune-up. 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, 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.

Common Engine Tune-Up Q&A For 2008 Mercedes-Benz GL550s

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? 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.
Are hard starts and stops bad for my Mercedes-Benz GL550 engine? Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.
I need a Mercedes-Benz GL550 tune-up. Where can I get on? At your closest Firestone Complete Auto Care! Our experienced technicians offer Mercedes-Benz GL550 service, maintenance, and repairs.
How often do Mercedes-Benz GL550 fuel injectors need to be cleaned? The frequency at which car fuel injectors should be cleaned can vary depending on several factors, including the type of fuel used and the driving conditions. Some manufacturers generally recommend a fuel system cleaning as part of your general car maintenance, or as needed based on symptoms of poor fuel system performance.
Who can I go to for Mercedes-Benz GL550 tune-ups? When your GL550 needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

Proactive Maintenance - 2008 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.

Repair Service for Your 2008 Mercedes-Benz GL550

Your Mercedes-Benz GL550 runs best when it’s well cared for. Make sure it’s always in tip-top shape with repairs from Firestone Complete Auto Care. Learn more about 2008 Mercedes-Benz GL550 repairs below.