Automotive EFI System segmentation by type distinguishes four principal architectures: port fuel injection (PFI), direct fuel injection (DFI), multi‑point fuel injection (MPFI), and sequential fuel injection (SFI). Port fuel injection remains the largest contributor, accounting for roughly 40 % of total revenue, because it is entrenched in legacy gasoline engines and benefits from mature supply chains. Direct fuel injection, driven by efficiency mandates and emissions regulations, has captured an estimated 30 % of the market and is expanding rapidly in premium and high‑performance segments. Multi‑point fuel injection, which distributes fuel to each cylinder via separate injectors, holds about 20 % of the market, primarily in mid‑range passenger cars where cost‑performance balance is critical. Sequential fuel injection, a subset of MPFI that times injector pulses with valve events, represents the remaining 10 % and is common in compact engines targeting low‑cost markets. Together, these type categories define the competitive landscape and directly influence component‑level pricing, R&D allocation, and overall market size for the Automotive EFI System market.