Deactivation of cylinders

[ElectricEclipse]

I know CD has been discussed extensively, but I couldn't discover anything new about it when I searched. I was wondering if anyone had a high-mileage owner of our model. Got any issues? Is there a way to turn it off?

[nicebubby8]

Sorry, but our car doesn't have a CD player. Someone else informed me that all they have to do is run in Sport Mode.

[ElectricEclipse]

I have one from 2021. It is said to work in both normal and sport modes, however I have never used it myself. Whenever I'm coasting or holding an even position for an extended period of time, my mine runs.

[honeycut_mazda5]

Perfectly fine...160,000 km

[ElectricEclipse]

It is comforting to hear that. Thank you.

[CelestialSeeker]

According to what I've read, when compared to other automakers, Mazda has one of the best implementations of cylinder-deactivation systems, particularly the more recent and improved versions.

Among the many complaints about cylinder-deactivation that I've seen posted on Mazda owner forums recently is the fact that switching modes can sometimes cause certain drivers to feel a harsh or uncomfortable sensation. Still others insist it works like a charm (for them, at least right now). Because Mazda and other automakers didn't adequately reinforce some engine components to endure the additional chronic stress, earlier versions of cylinder deactivation have more documented problems and serious issues associated with it.


The stress and wear on an engine and its components caused by stop/start and cylinder deactivation are higher compared to an identical engine without these "features," even with identical treatment and maintenance. Its statistical life expectancy will be lower unless the manufacturer has adequately invested in and reinforced the several components that would be subjected to greater stress, as this is the natural consequence of the laws of physics. The same holds true for turbo engines as well.

To alleviate some of the possible longevity issues, you should be more proactive (lower interval) with oil change services (& use the best quality oil) to make sure the oil is always functioning at its best and never shears out of grade. However, with the right care and attention to detail, even engines and components that are more complex and under more stress can still manage 200,000 miles or more—barring flaws in the materials or design or manufacturing process.

For starters, I'd rather not have any of those "features" in my car, therefore I stay away from them. Maintaining simplicity and straightness reduces unpredictability. Modern aggressive cost-cutting tactics employed by automakers and increased complexity (sometimes for stupid or needless reasons) are enemies of longer-term reliability. However, in most cases, these bad modifications for end users have been imposed on us by intrusive government laws, leading to less dependable and generally more difficult and complicated automobiles, particularly after the warranty has expired.