If you enjoy the articles in this web site, please consider supporting it by ordering the items you want by clicking on the recommended Amazon product links in the articles, which will just add those products to your Amazon shopping cart.

The product links contain a referral tag that allows me to earn a small commission on the sale of the products from Amazon.  This doesn't cost you anything extra but will help to offset the cost of running this web site and writing new articles.

Article Index

Anyone driving his/her vehicle on a regular basis is concerned about its fuel economy While many older vehicles were not very fuel efficient, it is in the interest of both the owner and the environment to ensure that the vehicle consume as little fuel as possible It is useful to keep a fuel consumption records to have a baseline for the vehicle's expected fuel economy and to have some indication of developing problems.

Often drivers recall their fuel economy from memory but, without circumstances and data, this can be misleading Some factors that could make today's fuel economy different than historical reality are:

  • Recollection of only one particular trip
  • Incorrect fuel economy calculations
  • Calibration of odometer (tires/axle gear/odometer gear)
  • Deterioration in mechanical condition
  • Variation in gas tank fill amount level
  • Variation in fuel's energy content [eg, 100% gasoline vs E10 (gasoline with 10% ethanol)]
  • Variation in average vehicle speed