Ford 3.5 EcoBoost Gen 2 Engine Specs

The Ford 3.5 EcoBoost Gen 2 is a 3.5-liter twin-turbocharged V6 petrol engine produced since 2017, representing a substantially revised second generation of Ford's full-size truck and SUV EcoBoost engine, used in the F-150, Transit, Expedition, and Police Interceptor Utility. Building on the lessons learned from the first-generation 3.5 EcoBoost, Ford refined the combustion process, turbocharger response, and overall durability of the design while further improving both power output and fuel economy.

Producing between 310 and 400hp and 542-678Nm of torque depending on application, the Gen 2 3.5 EcoBoost uses a DOHC 24-valve head, twin turbochargers, direct injection with supplementary port injection (a dual-injection system that helps reduce carbon buildup compared with pure direct-injection designs), and a compression ratio of 10.0-10.5:1. The addition of port injection alongside direct injection is a meaningful improvement over the first-generation engine specifically because it helps wash some fuel over the intake valves during certain operating conditions, reducing (though not eliminating) the carbon buildup that affects purely direct-injected engines.

Reliability improvements over the Gen 1 engine have been reported by owners and independent reviewers, aided by the dual-injection system and refined turbocharger design, though the engine still benefits from the same attentive maintenance approach as any modern turbocharged unit. Oil quality and consistent change intervals remain the most important factor in long-term turbocharger health, particularly in trucks used for towing, where sustained high loads place extra demand on the cooling and lubrication systems. The cooling system should be kept in excellent condition given the heat generated under heavy towing or hot-climate use. Spark plug replacement remains a relatively involved job given the tightly packaged twin-turbo V6 layout, and this should be factored into expected long-term maintenance costs. With regular servicing, the Gen 2 3.5 EcoBoost has proven itself a strong, durable engine well suited to demanding truck and fleet use, and it remains one of the most capable and efficient V6 options available in the full-size truck segment.