The next time you pull into a gas station, you might think fuel efficiency is just about the size of your engine or how fast you drive. The reality is far more complex and fascinating. Modern vehicles ...

Diesel engines are sometimes assumed to have poor fuel efficiency, possibly due to their association with heavy equipment, big ships, long-haul trucks, and other gas-guzzling machinery. But contrary ...

Short of haggling for the best possible deal at a dealership, one of the best ways to save money is by choosing a very fuel-efficient vehicle. What makes this even better than any one-time savings is ...

If you chose a diesel pickup over a gas-driven one, then you're already ahead of the game when it comes to fuel economy. According to the Department of Energy, diesel vehicles can be 30-35% more ...

Looking to save money at the pump? These are the most fuel-efficient new cars, tested in real-world conditions by Consumer Reports. Gas prices may fluctuate, but one thing remains true: driving a fuel ...