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Tag Archives: fuel economy

The ’70s oil crises

Yesterday I mentioned that a car met the goal in the Vetter Fuel Challenge. This 100 mpg car is the MAX, a very small diesel car created by Jack McCornack. I was skimming his development blog and saw a good summary of the 1970s oil crises: Back in the ’70s, we experienced what I’ve been [...]

AMA Vintage Days Vetter Fuel Challenge

I’ve been following Craig Vetter’s motorcycle fuel economy projects for a couple years, and just noticed that he posted impressive new results. His goal is to create a vehicle that can safely and comfortably carry four bags of groceries on the highway on a windy day, and still get over 100 miles per gallon. In [...]


I just found Fuelly, and I immediately thought “Why didn’t I create this website?” Fuelly looks like a nice simple (and easy to write) site that allows users to track their fuel economy. It uses this data to generate histograms of mileage for any model of car with a sufficient number of entries. Of course, [...]

The myth of American gasoline

Since the price of gasoline in the US is increasing again, the talk making ridiculous claims about gas prices are too. For example, I recently received a chain email titled “Buy AMERICAN Gasoline”. This particular email (which I won’t help spread by posting a link) claims that we should buy “AMERICAN” gasoline or we will [...]

Comparing cars to lightbulbs

I ran across the paper ‘Public perceptions of energy consumption and savings’. The authors conducted a survey to study how perceptions of energy use compares to the actual use of various appliances and transportation methods. For the appliances, they had people compare energy used to the power a 100 W lightbulb consumes in one hour. [...]

CO2 emissions and the new CAFE standard

I updated my simple fuel economy calculations with the new changes to the CAFE standard. Unlike yesterday’s post, this is a prediction of fuel economy for all cars and light trucks actually on the road, not just the CAFE standard for a particular year: The the definition of light truck in the CAFE standard includes [...]

New CAFE standard

New fuel economy standards have finally been issued. The long overdue update will rase the CAFE standards from their 1990 levels. This will be beneficial for the environment, health, national security, and will save car owners money: Together, EPA and NHTSA estimate that the average cost increase for a model year 2016 vehicle due to [...]

Another better stoplight

A couple months ago I wrote about the four phase traffic signals I saw in Sweden and Denmark. These are better than the three phase lights we use in the United States. The improved lights help smooth the flow of traffic, improve safety, and save gas. Today I saw a post about a fancier version. [...]

A better stoplight

I was able to spend some time in Sweden and Denmark a while ago. Other than the fun of traveling, the trip was to look at the differences between Scandinavian countries and the United States. One of the first differences I noticed is that they use four phase traffic lights instead of the three phase [...]

Energy efficiency in China

This is from a month ago, but I think it needs to be fresh in everyone’s minds. New York Times: China Is Said to Plan Strict Gas Mileage Rules You should also read Thomas L. Friedman’s latest editorial. It is past time for Americans to get serious about energy efficiency.