This study proposes a modeling methodology for light duty advanced technology vehicles including those powered by: Advanced gasoline internal combustion engine; Advanced diesel internal combustion engines; Hybrid electric and gasoline/diesel powertrains; Hydrogen fuel cell hybrid. The model called PERE (Physical Emission Rate Estimator) is designed to support the new EPA energy and emissions inventory model, MOVES (MOtor Vehicle Emissions Simulator). PERE is a stand-alone spreadsheet, which can be run by an informed user. It outputs Pump-to-Wheel (PTW) fuel consumption rates. The purpose of PERE is to fill data gaps in MOVES and to help it extrapolate to future projections of energy and emissions. The current version of PERE will model many of the advanced technologies in MOVES and is capable of capturing more. If the user is knowledgeable of the vehicle parameters required in PERE, other technologies can be modeled that are not described in this report (e.g. series hybrids etc.). However, since PERE requires significant development time for each technology, the current version of MOVES (2004) may directly model some vehicles using modifications to existing rates (e.g. hydraulic hybrids and some alternative fuels).