Why are the numbers on my dashboard different from the vehicle profile page?

The dashboard view of your vehicles uses a "Running Average" that's calculated with your last 10 fuel-ups. Your vehicle profile page uses all of your fuel-ups to calculate the average fuel economy. The same is true for the cost/distance statistic on your dashboard. Here are the stats based on your last 10 fuel-ups: Your all time average doesn't change very much over the life of your vehicle. Looking at the running average gives you a quick snapshot of your most recent fuel economy. Keep in mind that your dashboard numbers are private and you can always click to your vehicle profile to see your all time average.