When Arctic air settles in, drivers of diesel pickups and highway fleets learn quickly that not all fuels behave the same.

Heavy duty diesel engines are designed for long hours and extreme loads, but even the toughest systems fail without early ...

Mercedes-Benz pays $120M to settle its diesel scandal. What does this mean for the future of its combustion engine lineup?

USA and parent company Daimler AG have agreed to pay $149.6 million to settle allegations with 48 U.S. states, Puerto Rico, ...

Under the settlement, the German automaker will provide $2,000 payments to eligible owners and lessees whose cars received required emissions repairs.

The settlement follows allegations the carmaker violated state laws by equipping vehicles with software to defeat emissions testing.

Multistate settlement resolves environmental and consumer protection violations tied to emissions cheating Eligible Mercedes ...

Maruti Suzuki, Suzuki's Indian branch, spent $110 million on an engine's development. Unfortunately, design flaws led to it ...

Are older trucks allowed back in California? Is DEF dead? Can you now delete DPF? Land Line clears up myths about new ...