diesel

Gas prices are going up again, and it feels a lot like Groundhog Day: Same old problem, and media outlets are dispensing the same old advice. Not us! Here are the most interesting and innovative ideas our readers offered for reducing your pain at the pump.

Two weeks ago, DailyFinance asked our readers for their advice on how to save money at the pump. In the more than 1,500 responses that followed, we found a lot of creative solutions. Today, we look at maintenance and new-vehicle options that will help you spend less per mile.

German automakers like Volkswagen, BMW and Mercedes, and Japanese automaker Mazda said this week at the North American International Auto Show that they are planning to offer more vehicles that run on "clean" diesel. U.S. automakers, though, say they won't offer diesel engines in anything but...

The U.S. started 2011 with the highest gas prices ever for January. That doesn't bode well for the coming months, but the sky isn't falling. Here's what you can do about those higher fuel costs, including how to make investments that will profit from them.

California has postponed enforcing its strict new diesel-emission standards for four years. The rules, intended to slash emissions from trucks, buses and construction equipment, had been scheduled to take effect in March 2010.

The U.S. has never had $3 gas at Christmastime because the price typically gets lower as the days grow shorter. This year may be quite different, thanks to events from Canada to China. And some analysts think prices will really heat up in spring.

U.S. consumers in the last year or so have been whipsawed by the price of oil. Having seen crude oil prices surge to more than $147 a barrel in July 2008, prices tumbled steadily right into the new year, only to resume a steady climb on investor speculation that the world economy was heading out of...