What is the 30-60-90 rule for cars?
The 30-60-90 rule for cars refers to a preventive maintenance schedule designed to keep your vehicle reliable, efficient, and safe. It’s one of the most effective ways to avoid expensive repairs later. Here’s what it means — and why it matters.

🔧 What the 30-60-90 Rule Means
Your car’s major maintenance should happen every 30,000 miles, 60,000 miles, and 90,000 miles. These intervals are based on how long key components typically last before they start to wear down or fail.
- At 30,000 miles:
Replace air filters, inspect brakes, flush fluids, and check belts and hoses. - At 60,000 miles:
Replace spark plugs, transmission fluid, and possibly the serpentine belt. - At 90,000 miles:
Major services like timing belt replacement, cooling system flush, and suspension inspection are due.
⚙️ Why It Matters
Following this schedule helps:
✅ Prevent costly breakdowns before they happen
✅ Extend your vehicle’s life and improve fuel efficiency
✅ Keep your factory or extended warranty valid
✅ Ensure consistent performance and safety
Skipping these milestones can lead to major repairs that cost three to five times more later on.
🚗 The Smart Way to Handle It
Instead of searching for a “repair shop near me” every time something breaks, schedule your 30-60-90 maintenance at Chuck’s Garage, the best auto repair shop in Killeen. Our ASE-certified mechanics follow manufacturer guidelines, use premium parts, and back every service with a 5-Year / Unlimited Mileage Warranty — the best in Texas.
📍 501 Liberty St, Killeen, TX
📞
254-554-5445
🔧 Book your 30-60-90 service today at
www.chucks-garage.com
Prevent problems. Protect your investment. Trust Chuck’s Garage.










