A trip computer is a device in a car that provides information about a trip, such as distance traveled, average speed, and fuel consumption. Full definition
Another plus, the list of available features includes an auxiliary audio input, steering wheel audio controls, trip computer with oil life monitor, satellite radio and remote start. (samarins.com)
It has a full function trip computer / drivers information center, tire pressure monitoring, and rear backup sensors. (usedcarsgroup.com)
The car's trip computer showed an average of 30 + mpg in my mix of city and highway driving, achieved without the slightest effort on my part to maximize fuel economy. (automobilemag.com)