Honda Advanced Technology is part of Honda's long-standing research and development program focused on building new models for their automotive products and automotive-related technologies, with many of the advances pertaining to engine technology. Honda's commitment to pursuit of ideas and exploration of technological challenges has led to practical solutions ranging from fuel-efficient vehicles and engines.

i-VTEC is the acronym for intelligent VTEC (Variable Valve Timing and Lift Electronic Control), an evolution of Honda's VTEC engine. The i-VTEC engine works by controlling the timing and lifting of the camshafts depending on engine speeds. The valves open a small amount during low engine speeds to achieve maximum fuel efficiency. The valves will open wider at higher engine speeds to achieve higher performance. Honda i-VTEC (intelligent-VTEC) has VTC continuously variable timing of camshaft phasing on the intake camshaft of DOHC VTEC engines.
Earth Dreams Technology
Earth Dreams Technology is Honda's latest generation of engines proving their commitment to fuel-efficiency and environmental impact. By enhancing Honda's original VTEC (Variable Valve Timing and Lift Electronic Control System) technology to further improve thermal efficiency and minimize friction, a new combination of high output and fuel efficiency was achieved. Each engine class will receive different modifications in the new Earth Dream Technology roll out.
660cc class engine
Employs DOHC and VTC (Variable Timing Control) to improve intake efficiency. Bore pitch has been shortened compared to the present engine models and by reducing the thickness of the cylinder block and camshaft, engine weight is reduced by 15% and fuel efficiency is improved by 10%.
1.3 to 1.5L class engine
Employs VTC, direct injection technology and the Atkinson cycle using the DOHC, VTEC technologies as the base. Extensive friction reduction measures have been implemented.
1.8 to 2.0L class engine
Employs direct injection technology and the Atkinson cycle using the DOHC, VTEC technologies as the base. Implementation of VTC and high-capacity EGR (Exhaust Gas Recirculation) to both the intake and exhaust ports creates significantly reduced friction. For the 2.0L class hybrid vehicle engines, use of an electric water pump eliminates the need for a belt in the auxiliary device and contributes to a reduction in friction.
2.4L class engine
Based on the DOHC and VTEC technologies, it employs VTC and direct injection technology and implements extensive friction reduction measures. Engine has improved 5% in fuel efficiency and output, and a 10% improvement in maximum torque compared to the previous engine.
3.5L class engine
Employs new valve train mechanisms and direct injection technology in the SOHC, VTEC, VMC systems to improve fuel efficiency by over 10% and 5% of output; relative to the present standalone engine model. Through its implementation first in the mini-vehicle N BOX and gradually onto other vehicle models, Honda aims to achieve top-of-industry fuel efficiency for every category within three years, while simultaneously setting a timeline of 2020 to reduce by 30% CO2 emissions for all products sold worldwide, relative to emission figures for 2000.