The Daihatsu P5 was a sports racing car built by Daihatsu in 1967. It was an evolution of the Daihatsu P3, and featured a 1.3-litre straight-four engine capable of producing around about 140 hp.
The Daihatsu P5 was an updated version of the P3, but featured a bigger 1.3-litre straight-four engine, fitted in the rear of the car. The engine had double overhead camshafts and two carburettors, and was capable of producing up to 140 hp (104.4 kW; 141.9 PS). Two P5s were entered in the Japanese Grand Prix in 1967. It was entered in the 1000 km of Suzuka in 1968, finishing third. It was then run in the Japanese Grand Prix again, which was held at Fuji Speedway; the No.15 car won its class, and finished tenth overall. Toyota bought Daihatsu in 1969, but the car was used one last time; it finished second in the 1000 km of Suzuka that year.