This paper assessed the potential contribution of cities in improving the planning and delivery of transport-specific Nationally Determined Contributions (NDC), mainly focusing on the case of Pasig City in Metropolitan Manila, Philippines. In doing so, this paper compared the calculated emission reduction from urban transport interventions in Pasig City with the transport NDCs of the Philippines. The results of the modeling exercise suggest that Pasig City can deliver better than the national government with the transport interventions in Pasig City potentially reducing the city's transport greenhouse gas (GHG) emissions by 22.39% compared with its business-as-usual (BAU) scenario. In contrast, the Philippine transport NDCs can only reduce nationwide transport GHG emissions by 6%. A summary of the crucial gaps in the Philippine transport NDCs based on the results of the assessment is also presented, as follows: limited to big infrastructure projects; failed to consider specific interventions for the urban freight sector, for two-and three-wheelers, for active transportation, and for travel demand management; assumed a low uptake of the Public Utility Vehicle (PUV) Modernization Program; and the spatial coverage of most interventions included in the transport NDCs is limited to metropolitan areas. Finally, this paper concludes that the Philippine transport sector NDCs may need some rethinking, improvement, updating, or calibration. The crucial role of cities in decarbonizing the urban transport sector must also be recognized and reflected in the Philippines' international GHG emission reduction commitments.