Why does the check engine light come on when I start my M850i xDrive?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your M850i xDrive firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are BMW M850i xDrive engine noises bad?

Strange engine sounds can be a sign something’s off in your BMW M850i xDrive. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my BMW M850i xDrive engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Is it okay to put water in my BMW M850i xDrive radiator?

It’s not recommended you put water in your M850i xDrive radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.

Why did my M850i xDrive engine suddenly stop?

If your M850i xDrive car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Who repairs BMW M850i xDrive engines?

Your local Firestone Complete Auto Care has you covered with expert M850i xDrive engine repair. Schedule an appointment today and see us at one of our thousands of locations.

2025 BMW M850i xDrive Engine Repair

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2025 BMW M850i xDrive Trim Options

Select your BMW M850i xDrive trim level to learn more about BMW-recommended engine repair. Even BMW M850i xDrive parts will get older and change.

Repairs for Your 2025 BMW M850i xDrive

Nothing lasts forever. Even your BMW M850i xDrive's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2025 BMW M850i xDrive repairs.

We Know BMW M850i xDrive Engines

BMW M850i xDrive drivers trust that their M850i xDrive will take them near and far. You probably thought about that when you got it. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. When they do, you might find yourself searching for 2025 BMW M850i xDrive engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. We've serviced more than 500 million vehicles since 1926, and our technicians know BMW M850i xDrive engines. Schedule an appointment if you're experiencing problems that could require engine repair. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Check Engine Light on 2025 BMW M850i xDrive

An illuminated check engine light on your BMW M850i xDrive is one of the first signs it's time to 'brake' for engine service. A check engine light that’s flashing or steadily illuminated could point to problems with your car’s ignition, Causes may include a faulty oxygen sensor, worn spark plug, a clogged catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Bring your M850i xDrive in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. rattling sounds, oil leaks, or engine misfiring.

2025 M850i xDrive Engine Services

If your 2025 M850i xDrive engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We don't start working until we have your approval. If a repair can wait, we'll let you know. If it's necessary for your safety, we'll make sure you understand that, too. We seek to give you all the info you need to make a smart decision about our services. Choose Firestone Complete Auto Care for BMW M850i xDrive engine repairs and you can feel confident knowing that we use BMW-approved parts and components like the timing chain or belt, oil gasket, sensors, or other parts.

Questions About 2025 BMW M850i xDrive Engines

Why does the check engine light come on when I start my M850i xDrive? It's okay if your check engine light comes on when you first start your vehicle. It’s just your M850i xDrive firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are BMW M850i xDrive engine noises bad? Strange engine sounds can be a sign something’s off in your BMW M850i xDrive. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my BMW M850i xDrive engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Is it okay to put water in my BMW M850i xDrive radiator? It’s not recommended you put water in your M850i xDrive radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.
Why did my M850i xDrive engine suddenly stop? If your M850i xDrive car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Who repairs BMW M850i xDrive engines? Your local Firestone Complete Auto Care has you covered with expert M850i xDrive engine repair. Schedule an appointment today and see us at one of our thousands of locations.