Using Garmin for 2 years. One question left.

There are places on the display that show total time, moving time and time stopped. Your 200 appears to have the places to display the data, but there are no times appearing there. I wonder if all 200s are like that or if you have one that has some issues.

Hi school_usa,

With no data available on the screen, it looks like you‘ll have to use the “S.W.A.G.” method, to determine the hours you drove your car, with this device.

The S.W.A.G. Method is the “Scientific wild a** guess”

Regards,

Tailspin

Nüvi 670 & 880
Mac Pro & OS 10.5.7

You drove without resetting the trip odometer for 31493.2 miles. Your overall average speed during this time was 32.5 m/h. Divide 32.5 into the total mileage and you get slightly over 969.021, which is the number of hours that you drove.

I suspect that the trip odometer is showing lines because you have exceeded it's capacity to display the information. Normally the trip odometer is intended to be reset more often.

There may also be some data in the maintenance screens of the nuvi that would give you similar information. I don't have my nuvi handy but will look to see if I can find any alternate ways to get this information and post back if I do.

Did you try resetting it and see if you get any values at all, after driving a short distance?

I did check the maintenance screens in my 250, but I couldn't find any additional information that might serve as an alternate way to get this information.

Your choice to not reset the trip odometer is an interesting one, but is is limiting the functionality of that screen of your nuvi. Assuming that you are driving the same vehicle all of the time and that you are the only driver, you could just use the vehicle odometer to track total mileage (subtract out your current trip screen mileage from the vehicle odometer before resetting to figure out where the vehicle odometer was when you started and record that somewhere). Or just use it as you have been, and calculate time driven by the method already shown. But since the average speed is only shown to one decimal place, this system will be less precise than resetting the trip odometer occasionally.

I understand the concept of dividing 32.5 mph into 31,492.2 and arriving at the figure of 969.021. However, (maybe I'm being dense here), but wouldn't the max speed of 99.9 throw off the total hours driven. There doesn't seem to be enough information given to come to that conclusion. At 99.9 mph, (the max speed shown) you are going to cover 3 times the distance (32.5 mph) in the same amount of time. So, by doing that, wouldn't that throw off the total time driven? I don't know. Just asking. (And conversely, driving slower than 32.5 mph would skew the total hours driven also.)

Max speed is not a factor as it is included in the average speed. As to no data for time being shown, with only 2 digits available for the hour, once it rolled from 99 any figure displayed would be wrong, so no display is probably the best.

Gotcha. It doesn't matter at what speed you were driving, the avg. speed would correlate out correctly. That's why I like this site. People will always set you straight.

I really appreciate your help