It's standard for older diesel engines to emit black smoke under full load, which occurs during "turbo lag." As the diesel engine waits for the turbo to spool, the machine will blow thicker black ...

The controversial automatic engine stop-start system, which shuts off a car's powerplant when it comes to a halt, may soon be a thing of the past. Lee Zeldin, the new Environmental Protection Agency ...

Get in almost any new non-EV these days, and chances are it has engine stop-start, a fuel-saving feature that turns off the engine when the vehicle is stopped for any length of time at a stoplight or ...