The N series is Honda's first automotive diesel engine, an inline-four for medium-sized vehicles.

The most notable feature is the aluminium block, which uses proprietary technology in the manufacturing process to provide light weight and high rigidity.

The engine uses either a single (N16A1/2) or bi-turbocharger (N16A4) from Wastegate Type & Variable Geometry Turbocharger (VGT).

With Diesel particulate filter (DPF), IDLE STOP SYSTEM, Exhaust gas recirculation SYSTEM (EGR) & Small Size Intercooler.

The stroke has been slightly reduced to qualify for sub-2200 cc engine displacement, for tax and registration purposes in some jurisdictions.