What to put in a car maintenance log

FieldWhy it matters
Service typeShows what was done and what's due next
DateShows consistency and drives date-based reminders
Odometer readingDrives mileage-based reminders and shows service intervals
Total costFeeds your cost per mile and yearly running costs
Shop and notesGives mechanics and buyers context
Receipt or recordBacks up the entry if a buyer or warranty claim asks

How often each job is due depends on your vehicle, so use the schedule in your owner's manual for the intervals. A log doesn't replace professional inspections; it makes sure you know what has been done and what is coming up.

Keeping the log pays off twice: you catch overdue work early, and a documented history is one of the best ways to build buyer trust and support your asking price. See what to do before you sell your car and how much it costs to own a car per year.