Every 3 Months Car Maintenance Checklist
Keep your vehicle running smoothly with this comprehensive 3-month car maintenance checklist. Perfect for DIYers and proactive owners between major oil changes.
Overview
Summary and key details for this checklist.
A 3-month check-up is the backbone of preventative maintenance. While modern synthetic oils may last longer, other components like tires, wipers, and lighting require more frequent observation to ensure roadworthiness.
For a DIY enthusiast, this entire checklist typically takes 30 to 60 minutes. If performed at a professional shop, it is often included as part of a multi-point inspection during an oil change service.
Printable Checklist
A clean, scannable checklist view. (You can export/print from the sidebar.)
| Item | Priority | Who | Time | What to check (Pass/Fail) | If failed (Next step) |
|---|---|---|---|---|---|
| Engine Oil Level | Required | DIY | 5 min | Level between Min/Max marks | Top off or change oil |
| Tire Pressure (All 5) | Required | DIY | 10 min | Matches door-jamb PSI | Inflate to spec |
| Washer Fluid Level | Recommended | DIY | 2 min | Reservoir is full | Refill with seasonal fluid |
| Headlights (High/Low) | Required | DIY | 3 min | Both sides illuminate brightly | Replace bulb or check fuse |
| Brake Lights | Required | DIY | 2 min | All bulbs light when pressed | Replace bulb immediately |
| Turn Signals | Required | DIY | 2 min | Consistent blinking speed | Replace bulb or relay |
| Wiper Blade Condition | Recommended | DIY | 5 min | No streaks, tears, or chatter | Replace wiper blades |
| Coolant Level | Required | DIY | 3 min | Level at 'Full Cold' line | Top off; check for leaks |
| Battery Terminals | Recommended | DIY | 5 min | No white/blue corrosion | Clean with wire brush |
| Tire Tread Depth | Required | DIY | 5 min | Above 2/32" (or Lincoln's head) | Replace tires soon |
| Air Filter Visual | Recommended | DIY | 5 min | Filter is white/grey, no debris | Replace filter |
| Power Steering Fluid | Recommended | DIY | 3 min | Level within range on dipstick | Top off; check pump for noise |
| Brake Fluid Level | Required | DIY | 2 min | Level between Min/Max | Top off; inspect brake pads |
| Serpentine Belt | Recommended | DIY | 5 min | No cracks, fraying, or glazing | Schedule belt replacement |
| Horn Operation | Required | DIY | 1 min | Loud, clear sound | Check fuse or horn unit |
| Dashboard Warning Lights | Required | DIY | 1 min | No lights remain on after start | Scan for OBD-II codes |
| Exhaust Visual Check | Optional | DIY | 5 min | No excessive rust or holes | Visit muffler shop |
| Floor Mat Clearance | Required | DIY | 1 min | Mat does not interfere with pedals | Reposition or replace mat |
Use this table as a guide during your quarterly inspection. We recommend printing this page or keeping it open on a mobile device as you move around the vehicle.
Consistency is key to vehicle longevity. If you find multiple 'Fail' items, prioritize safety-related components like brakes, tires, and lighting before addressing cosmetic or comfort issues.
Notes
Extra context, cautions, and helpful tips.
After completing your checklist, it is vital to document your findings to maintain the resale value of your vehicle.
- Keep a dedicated folder for all parts receipts.
- Update your digital maintenance log or app.
- Dispose of old fluids (oil, coolant) at an authorized recycling center.
- Reset the maintenance light only if you performed the required service.
- Note any upcoming repairs needed (e.g., 'brakes in 3 months').
- Check for any active safety recalls on the NHTSA website.
- Clean the interior to prevent premature wear on upholstery.
- Browse our Tire Maintenance guides for deeper dives.
- Check out Monthly Checklists for even more frequent care.
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FAQ
Common questions about this checklist.
Start from the complete car maintenance checklist, then narrow down by mileage, interval, and season.