Dseries

Dseries is Honda's family of inline-four engines produced for compact and subcompact cars from the mid-1980s through the early 2000s. The line powered a range of models, most notably the Civic and its hatchback variants, and also appeared in other markets via licensing arrangements. Displacements span about 1.3 to 1.7 liters, and the lineup includes both SOHC and DOHC designs. Several variants employ Honda's VTEC variable valve timing, while others use conventional cams. Most Dseries engines use an iron block with an aluminum head and feature early fuel-delivery systems that evolved from single-point to multi-point injection over time.

Performance and maintenance: The Dseries prioritizes efficiency and reliability, offering modest power but strong durability and low operating costs. Variants were tuned for different markets, with some emphasizing torque low in the rev range for city driving and others delivering higher power for sportier trims. The design generally favors straightforward maintenance and wide aftermarket support.

Legacy: As Honda shifted to newer engine families in the late 1990s and early 2000s, the Dseries was gradually replaced by the K-series. The engines remain well known for reliability and ease of repair, and many examples remain in service in older Civics and related models, supported by a large aftermarket ecosystem.