---
id: faq-0078
title: "When should I replace my vehicle's air filter?"
category: faq
subtopic: service-and-maintenance
page_type: faq
source_url: "https://www.castlechevymchenry.com"
tags: ["air-filter", "engine-maintenance", "performance"]
questions:
  - "How often does an air filter need replacing?"
  - "What happens if I don't change my air filter?"
  - "How do I know if my air filter is dirty?"
related: [cabin-air-filter, maintenance-plan, fuel-efficiency]
dealer: Castle Chevrolet McHenry
---

Your engine air filter typically needs replacement every 12,000 to 15,000 miles, or yearly if you drive in dusty conditions. A clogged air filter makes your engine work harder, reduces fuel economy, and can hurt performance. If you notice rough idling or a drop in power, it may be time for a new filter. A fresh filter is affordable and easy to maintain. Castle Chevrolet McHenry's Service Department carries genuine Chevrolet filters and can replace yours quickly. Call (779) 600-2956 to schedule a filter check or replacement-keeping your engine breathing easy is our priority.