Frequently Asked Questions

Why is an air filter important for a 2019 Subaru STI S209?

• Protects the turbocharged 2.5L flat-4 from dirt and debris that reduce power and accelerate wear.
• Helps maintain designed horsepower (341 hp) and torque delivery by ensuring consistent airflow to the engine.
• Improves fuel efficiency and lowers long‑term repair costs—our service pricing often costs less than independent shops while delivering factory-trained technicians and OEM parts for better longevity.
• To get a fast inspection or repairs with available financing, schedule service at Mike Shaw Subaru Greeley today.

Where is the air filter in a 2019 Subaru STI S209?

• The engine air filter sits in the intake housing ahead of the turbo and throttle body—accessible but precisely located to protect the performance intake tract.
• The cabin air filter is located behind the glove box or under the dash to filter HVAC airflow into the passenger compartment.
• Our certified technicians at Mike Shaw Subaru Greeley will quickly locate and inspect both filters and recommend OEM replacements when needed.

How much does it cost to replace the air filter in a 2019 Subaru STI S209?

• Costs vary by filter type; we price competitively and often cost less than independent shops while offering superior warranty protection and factory-trained expertise.
• Doing the job with OEM parts at our dealership saves you immediate and long-term money by preventing premature wear and preserving performance.
• Ask about current service specials and service financing to get the work done now and pay later.

How often should I change the engine air filter on my 2019 Subaru STI S209?

• Inspect at least every 12 months or 12,000 miles; replace sooner if you drive in dusty, high‑performance, or track conditions.
• Regular inspections at Mike Shaw Subaru Greeley protect turbo components and maintain factory performance specs.
• Scheduling regular checks with our certified techs is easy—schedule appointment online and ask about maintenance bundles.

What is the difference between an engine air filter and a cabin air filter?

• The engine air filter protects the engine and turbocharger by filtering intake air; the cabin air filter cleans the air entering the passenger cabin.
• Both affect comfort and performance—clean engine filters preserve power and economy; clean cabin filters improve air quality for occupants.
• We use OEM parts, provide transparent pricing, and back work with warranties; remember, warranty repairs must be performed at a certified dealership to remain valid.

What are signs of a bad air filter?

• Reduced acceleration, decreased fuel economy, and unusual turbo lag can indicate a clogged engine air filter on your 2019 Subaru STI S209.
• Musty odors, reduced HVAC airflow, or increased dust in the cabin point to a failing cabin air filter.
• If you notice these signs, bring your vehicle to Mike Shaw Subaru Greeley; our techs will inspect quickly and recommend the most cost-effective solution—ask about service specials and service financing.

What types of air filters are in a 2019 Subaru STI S209?

• This vehicle uses a high-flow engine air filter tailored for turbocharged performance and a pleated cabin air filter for interior air quality.
• We offer OEM replacements and performance-grade options when appropriate, clearly explaining benefits, costs, and warranty implications.
• To preserve performance and protect warranties, rely on our certified technicians at Mike Shaw Subaru Greeley—schedule service to have filters inspected today.