Any driver who’s ever tried to get through the Holland Tunnel or over the George Washington Bridge at rush hour knows what it’s like to sigh, cuss and shut off their engine after sitting in ...

Autonomous engine stop-start systems, designed to save fuel by turning off a car’s engine when at a standstill, are increasing in popularity, especially in Europe, where fuel prices are often double ...

Automatic engine stop‑start was sold as a painless way to cut emissions and fuel bills, a tiny software trick that would shut ...

For more than a decade, automatic engine start/stop systems were sold as painless climate tech, a clever way to trim fuel use by cutting the engine at every red light. Now the feature is rapidly ...

We’ve heard about BMW’s non-hybrid start-stop engine used in the European 1 and 3 Series, but Mazda is developing a more efficient version. Mazda’s independently developed system, dubbed Smart Idle ...

Back in July we reported Lamborghini was working on new cylinder deactivation technology for the Aventador to help it achieve better fuel economy numbers. Turns out we were right. Lamborghini just ...

What does the ultracapacitor do better than anything else? Provide short-term high power for many, many cycles. There are not many applications better suited for that capability than engine cranking ...

Q: Is it true that most of the engine wear happens every time the engine starts? If so, then does the start/stop engine feature add wear? A: Most engine wear occurs after cold starts (when the engine ...

Does the auto start/stop system wear out the engine quicker and turbo? Also, what kind of battery does it have? And has the starter motor been made stronger to within the stop starts? And what the ...

The stop-start function on modern cars works according to a variety of protocols. Fundamentally, if the car’s battery can cope with not having the engine running, then it will trigger the fuel-saving ...