As diesel prices soar, truckers are more conscious than ever about improving fuel consumption. But design plays a critical ...

Volvo says advances in combustion and aftertreatment helped its new EPA 2027 D13 engine avoid the fuel-economy penalties many ...

DOE's regional averages are drawn from its weekly national survey of about 400 diesel service centers. The stations are surveyed on Mondays and the results are reported late that day. DOE divides the ...

Back in the 1980s, the overwhelming majority of Mercedes-Benzes on U.S. roads were diesels, but now sales have fallen through ...

Volvo Trucks has unveiled an all-new 13-litre engine platform promising lower fuel consumption, higher torque and ...