The 6.6 Duramax is one of the most powerful engines for heavy-duty trucks like the Chevy Silverado and GMC Sierra, but how ...

That's based on averages of 18 mpg for the diesel models and 15 mpg for the gas ones. It's worth noting ... these trucks are intended for tough jobs, towing and hauling immensely heavy loads ...

It's got a distinctive road presence, rugged capabilities, significant towing ... diesel engines are generally more efficient than their gasoline counterparts. The 2024 Ram 2500 HEMI 6.4's fuel ...

The new diesel engine approaches much larger displacement V-8 towing capability with a small but powerful 3.0-liter V-6 and best-in-class fuel efficiency of better than 25 MPG on the highway.

It's a good choice for trailer towing ... Cherokee with the diesel-powered Volkswagen Touareg TDI as the most efficient nonhybrid midsized SUV. With 32 mpg highway fuel economy, the Grand Cherokee ...