Diesel engines offer tons of torque allied with impressive fuel economy, but they tend to be noisier and less refined than ...

Think the legendary 6.7 Cummins is the undisputed king of heavy-duty torque? Here are four massive diesel engines that ...

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Iowa is leading 19 states in a lawsuit against the U.S. Environmental Protection Agency for backing California’s future ban on heavy diesel vehicles in a purported attempt to regulate traditional ...

Displacement on demand has been a fuel-saving technology for light-duty gasoline engines for several years now. The technology also holds promise for diesel engines – but in a slightly different way.

Europe’s truck market returned to growth in the first quarter of 2026, but the recovery was driven far more by diesel than by electric trucks. ACEA’s latest registration data shows diesel truck ...