As well as changes to the existing engines, a new 1.9-litre inline-four engine was introduced. Known as the "Starfire" four, the new engine was the 2.85-litre blue inline-six engine with two cylinders removed. Also used in the UC Sunbird, this engine was fitted to the Commodore in response to increasing pressure from the 1979 energy crisis. This new engine was not a complete success however, as its lack of power meant the engine needed to be pushed hard to deliver acceptable performance, negating any fuel saving benefits.