Why does the check engine light come on when I start my WRX STI?

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your WRX STI firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why does my Subaru engine sound different?

Unusual noises can signal a problem with your Subaru WRX STI engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my Subaru WRX STI engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Is it okay to put water in my Subaru WRX STI radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What could cause my WRX STI engine to suddenly stop?

Reasons your WRX STI car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who can repair my Subaru WRX STI engine?

For Subaru WRX STI engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.

2021 Subaru WRX STI Engine Repair

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2021 Subaru WRX STI Trim Options

Select your Subaru WRX STI trim level to learn more about Subaru-recommended engine repair. Even Subaru WRX STI parts will get older and change.

H4/2.5L

Repairs for Your 2021 Subaru WRX STI

Nothing stays the same forever. Even your Subaru WRX STI’s engine parts and components will change. When something breaks or fails, we’re ready to help. Select a service or repair below to learn more about what we can do for your 2021 Subaru WRX STI.

We Know Subaru WRX STI Engines

Subaru WRX STI drivers trust that their WRX STI will take them near and far. You probably thought about that when you got it. Even so, pieces and parts can break down over time. Things can go wrong on the road. When they do, you might find yourself searching for 2021 Subaru WRX STI engine repair or replacement parts. That's when it's time to head to Firestone Complete Auto Care. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Subaru WRX STI engines. Schedule a courtesy inspection at the first sign of engine trouble. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Illuminated Check Engine Light on 2021 Subaru WRX STI

As soon as your WRX STI check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s on or flashing could be a symptom of a serious problem in your vehicle's ignition, Possible causes can include a failing oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Bring your WRX STI in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. Other signs it's time for Subaru WRX STI engine service might include burning smells, or engine misfiring.

2021 WRX STI Engine Services

When your Subaru WRX STI engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We never do any work without your sign-off. If a repair isn’t urgent right now, we’ll let you know. We'll also tell you if it's necessary for your safety. We want to provide you with the information you need to make an informed engine repair decision. Choose Firestone Complete Auto Care for Subaru WRX STI engine repairs and you can feel confident knowing that we use Subaru-approved parts and components like the serpentine belt, engine oil seal, sensors, or another part.

Engine Q&A 2021 Subaru WRX STI

Why does the check engine light come on when I start my WRX STI? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your WRX STI firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why does my Subaru engine sound different? Unusual noises can signal a problem with your Subaru WRX STI engine. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my Subaru WRX STI engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Is it okay to put water in my Subaru WRX STI radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What could cause my WRX STI engine to suddenly stop? Reasons your WRX STI car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who can repair my Subaru WRX STI engine? For Subaru WRX STI engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.