page_title: Mazda Z engine
section_title: ZJ
hierarchical_section_title: Mazda Z engine / ZJ
caption_attribution_description: English: Mazda ZJ-VEM
context_page_description: The Mazda Z-series is a smaller gasoline inline-four engine ranging in displacements from 1.3 L to 1.6 L. They are the evolution of the cast-iron block B-engine.
  The Z-engine has 16-valves operated by dual overhead camshafts, which are in turn driven by a timing chain. The block of the 98-02 Z5, ZM and ZL engine is cast iron same as the earlier B series of engines.
  Other Z engines have aluminum alloy block and head, with cast-iron cylinder liners.
  The block features split upper and lower block assembly for added strength and rigidity, special long intake manifold for added torque, S-VT continuous variable valve timing, and a stainless steel 4:1 exhaust header.
  In 2011, Mazda started to introduce the SkyActiv G-engine as a new, more economical option with vehicles that also ran the Mazda Z-engine. Production was finally halted in 2014, being the last year of the Demio/Mazda2, Verisa as well as Axela/Mazda3 of their generations. From here on in, Mazda moved on to the full SkyActiv architecture vehicles including running only the aforementioned SkyActiv G-engine but now offering it in also larger displacements, as well as a new SkyActiv D-engine turbo-diesel.
context_section_description: The 1.3 L (1,348 cc) ZJ 74 mm × 78.4 mm (2.91 in × 3.09 in) is available with either continuous cam-phasing VVT ZJ-VE 91 hp (68 kW; 92 PS) or a high-efficiency Miller cycle ZJ-VEM 90 hp (67 kW; 91 PS).
  Applications:
  2003–present Mazda Demio ZJ-VE
  2007–present Mazda Demio ZJ-VEM
caption: Mazda ZJ-VEM
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