Mazda may be losing its spark, and that’s a good thing.

The automaker is reportedly set to introduce the first modern gasoline automobile engine that works more like a diesel, using compression to ignite its fuel mixture, rather than an electronic spark.

The technology is known as Homogenous Charge Combustion Ignition (HCCI,) and it could deliver a 30 percent improvement in fuel economy, according to Nikkei. The lean-running motors also deliver better emissions performance than conventional gasoline engines.

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