---
id: guide-0044
title: "What should I know during my first 100 days of new-car ownership?"
category: guide
subtopic: first-100-days
page_type: guide
source_url: "https://www.castlecdjrnaperville.com"
tags: ["new owner", "ownership", "maintenance", "guide"]
questions:
  - "What do I do after buying a new car?"
  - "How often should I change oil in a new car?"
  - "Is there a break-in period?"
  - "What maintenance should I do first?"
related: [scheduled-maintenance, warranty-basics, service-plans]
dealer: Castle CDJR of Naperville
---

The first 100 days set the tone for your car's long life. Most new vehicles need minimal break-in today (manufacturers have largely engineered it out), but you should still drive smoothly-avoid hard acceleration and towing until 500 miles or so.

### First steps
Read the owner's manual thoroughly; it's your roadmap for maintenance and features. Schedule your first service appointment before the recommended interval (often 10,000 miles). Familiarize yourself with all controls, safety features, and infotainment systems. Check tire pressure monthly and inspect fluids regularly.

### Early service
Attend your first scheduled maintenance on time. Dealer service ensures genuine parts and warranty compliance, and each visit documents your care. If anything feels wrong-noises, warning lights, performance issues-bring it in promptly. Warranty covers manufacturing defects, so use it.

### Build good habits now
Regular maintenance prevents small problems from becoming expensive ones. Keep records meticulously. These early months are when good ownership practices take root.

Castle CDJR of Naperville's service team is ready to care for your new vehicle from day one. Call (630) 864-6683 to schedule your first service or ask any ownership questions.