Diesel used to be a dirty word that evoked images of sooty smoke, choking fumes and loud engine sounds. But nowadays, unless you're stuck behind a Mack truck, diesel is a little cleaner and a lot ...

Back in the Malaise era during the 1970s and early '80s, before imports like the Toyota Camry really took over the market, diesel-powered engines seemed like the way forward for American vehicles.

Here's the story of perhaps the most legendary diesel engine ever made, the Cummins 5.9L.

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 ...