Honda S engine

The S series is a three-cylinder gasoline engine developed and manufactured by Honda, with a total displacement of 658 cc. The engine is intended for kei car applications and replaced the earlier Honda P engine when it first appeared in November 2011. Honda's stated goal at the time of introduction was to have the most fuel efficient engines in every class in which they are present by 2014 and to achieve a 30 percent reduction in CO2 emissions across all of their vehicles by 2020 – which is why the engine family was marketed under the "Earth Dreams" Technology moniker. The second generation (S07B) appeared in 2017; it has the same overall displacement but is of a long-stroke design.