As the performance of vehicular content delivery can be enhanced by carefully designing content delivery schemes and content caching schemes, in this chapter, we provide a comprehensive survey of techniques for vehicular content delivery performance enhancement. Particularly, we present the state-of-the-art literature review in two sections. First, we present existing works on the heterogeneous vehicular networking (HetVNet) techniques, where multiple alternative networking techniques are utilized to off-load the access networks. Specifically, Wi-Fi and TV white space-based techniques in terrestrial HetVNets, unmanned aerial vehicle (UAV)-based techniques in air–ground vehicular networks, and satellite-based techniques in space–air–ground vehicular networks are investigated to off-load the cellular access networks and improve the content delivery performance. Second, existing works on mobile edge caching-assisted content delivery for backhaul offloading are further investigated, including the content placement scheme design and content delivery scheme design in different HetVNet scenarios.