Carminder

Super fast maintenance bookmarking and alerting for your car. Never forget about your car, ever again!
Add one or several cars, add your events, set a reminder (or don't, if you just want to use the app as a bookmarking tool), tuck the app in a folder to save space and voilà: you'll be alerted just in time for the event.
Several options for the alert time: on the day of the event, one day, one week or one month before the event.
The app comes with a list of autocomplete suggestions for events, which updates itself dynamically when adding events: if the event name doesn't exist in the list, it is added. You can delete suggestions by going to Settings -> Autocomplete
For the best experience, I recommend setting the Alert Style of Carminder to "Alerts" in Settings -> Notifications.
Kept in sync on all your devices via iCloud.

The icons found in Settings are courtesy of the nice people at http://www.visualpharm.com