The diesel engine was invented in the 1890s and has been in use in commercial vehicles and passenger cars for over a century. Diesel engines remain popular for their reliability and fuel economy, ...

Diesel engines have a steadfast reputation for reliability, longevity, and pumping out gobs of grin-inducing, low-end torque. The latter makes diesels preferable over gas engines for hauling, towing, ...

Older diesel trucks sit at the center of a policy fight that touches public health, climate goals, and the economics of freight. Regulators see high-emitting engines as a lingering liability from an ...