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' ...

Cummins said its 2020 X15 Productivity Series ratings are designed for multi-purpose, vocational and heavy-haul customers who need a wider engine speed range. Cummins will expand its lineup of X15 ...

Clessie Cummins founded the Cummins Engine Company over 100 years ago, and the company has been regularly churning out big-capacity and big-power diesel engines since then. While the largest Cummins ...

X15 diesels showed quick throttle response and strong acceleration on the TRC's tracks. Engine brakes were impressively strong, even at low rpm's. A parade of X15-powered tractor-trailers led the ...

Given its vast popularity, it's fair to say that the Cummins X15 engine is the backbone of the American freight trucking industry. And while Cummins makes several heavy-duty truck engines, as the ...

[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 ...

Cummins has been planning to debut a diesel-powered version of the engine in its X15 fuel agnostic platform in early 2026, yet with changes to environmental regulations this year, the company is ...