QR engines feature enhanced combustion and exhaust efficiency, as well as even more powerful torque at low- to mid-speeds. These engines are optimal for smooth driving during daily life. QR engines for FF cars are manufactured at Aichi Machine Industry and supplied to car plants in Japan and overseas.

The next generation model succeeding QR25 that has achieved high output and low fuel consumption as well as lower vibration and CO2 emissions by modifying the mirror bore coating and the compression ratio, etc.