Frequently Asked Questions

Why is an air filter important for a 2020 Lexus NX 300?

• Protects the engine by stopping dust and debris from entering the combustion chamber, which preserves horsepower and fuel efficiency.
• Maintains optimal airflow so the turbocharged inline 2.0 engine runs cleanly and keeps the vehicle’s 235 hp and 258 lb-ft torque performing as designed.
• At Stevinson Lexus of Frederick we use OEM filters and factory-trained technicians to deliver long-term savings and fewer repairs—book to schedule service or check our service specials.

Where is the air filter in a 2020 Lexus NX 300?

• The engine air filter sits in the intake box near the front of the engine bay for easy access; the cabin air filter is located behind the glovebox or under the dash.
• Our certified Lexus technicians at Stevinson Lexus of Frederick inspect both during routine service to ensure correct installation using OEM parts.
• To keep filters checked and replaced on schedule, you can schedule appointment online or review our current service specials.

How much does it cost to replace the air filter in a 2020 Lexus NX 300?

• Replacement costs vary by part and labor, but Stevinson Lexus of Frederick often costs less than independent shops while delivering factory-trained expertise and OEM parts.
• Choosing dealer service brings immediate savings—accurate diagnosis, correct parts, and fewer return visits—and long-term savings through better fuel economy and extended component life.
• Ask about payment options and service financing when you schedule service, and review available service specials to reduce your out-of-pocket costs.

How often should I change the engine air filter on my 2020 Lexus NX 300?

• Typical guidance is to inspect at every oil change and replace as needed—commonly every 12,000–30,000 miles depending on driving conditions.
• If you drive in dusty, high-altitude, or heavy stop-and-go conditions, more frequent replacement preserves turbocharger and engine life.
• Let our technicians at Stevinson Lexus of Frederick set an individualized schedule and schedule service when inspection indicates replacement is due.

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

• The engine air filter protects the engine and turbocharger from contaminants; the cabin air filter cleans outside air before it enters the passenger compartment.
• Both affect comfort and performance: a clogged engine filter reduces power and economy, while a dirty cabin filter lowers HVAC efficiency and interior air quality.
• Stevinson Lexus of Frederick uses OEM cabin and engine filters and documents service history—warranty-covered repairs must be performed at a certified dealership to remain valid.

What are signs of a bad air filter?

• Reduced acceleration or lower fuel economy, unusual engine noises, and heavier smoke or odors from the exhaust suggest an engine filter issue.
• For cabin filters: persistent odors, reduced airflow from vents, or increased dust inside the vehicle indicate replacement is needed.
• If you notice symptoms, schedule service with Stevinson Lexus of Frederick to inspect filters, take advantage of service specials, and ask about financing options.

What types of air filters are in a 2020 Lexus NX 300?

• The 2020 Lexus NX 300 uses a replaceable pleated engine air filter and a cabin air filter—both available in OEM specification to match factory filtration and fitment.
• We recommend OEM filters for compatibility with the turbocharged 2.0L inline engine and the vehicle’s HVAC system, ensuring warranty compliance and reliable performance.
• Schedule a fast inspection at Stevinson Lexus of Frederick to confirm which filters your vehicle needs and take advantage of our transparent pricing and service specials.