Cylinder deactivation takes multiple engine cylinders out of play at low loads (by closing the valves and turning the injectors off). It saves a small amount of fuel when cruising on the highway. But Mazda's cylinder deactivation tech on the 2.5 SKYACTIV gasoline engine was the subject of a major recall in the US (and here in Australia).

So, is buying a CX-5, Mazda3 or Mazda6 with this engine a mistake in 2021 or 2022?

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