COLUMBUS, Indiana—To comply with 2027 emissions regulations, new powertrains must make performance compromises. Despite the added weight and backpressure of a larger aftertreatment system, Cummins' ...

The Cummins X15 diesel engine has been updated to meet the upcoming emissions requirements while maintaining the durability and performance that have made it widely used in long-haul operations.

Cummins released details of its 2027 X15 diesel engine, which it says meets EPA 2027 emissions requirements while improving fuel economy — and without adding weight or using more diesel exhaust fluid.

[Stay on top of transportation news: Get TTNews in your inbox.] Cummins will delay the launch of its latest X15 diesel engine for the heavy-duty on-highway truck market until late 2026, citing ongoing ...

Fleet leaders at TMC’s 2026 meeting in Nashville tested new technologies including the Tesla Semi, Cummins’ 2027 X15 engine and various efficiency and safety systems. The equipment highlights included ...

When Cummins announced its X15 fuel agnostic platform in 2022, the debut of a diesel powered unit was slated for launch in early 2026. This year, however, has been difficult for truck and engine ...