The car used a tuned short-stroke (73 mm) version of the bevel-gear driven overhead camshaft engine from the 1928 Morris Minor and Wolseley 10. This had already been highly tuned for use in the Q-type and was further modified, especially in the input area, to improve reliability.
The car's engine used a pre-existing design from the Morris Minor and Wolseley 10, which had been tuned for performance and reliability. The intake system was further optimized for improved functionality.