‘UK Auto’ factories produced 138,059 engines in September 2021, a decline of 36.3% year on year.
Output for both domestic and export markets fell 42% to 49,013 and 32.6% to 89,046 respectively.
Year to date, engine manufacturing fell 2.8% to 1,278,117 units compared to 2020 and remained 33.9% below the five year average.
Mike Hawes, SMMT chief executive, said: “During September the number of engines produced declined by over a third, continuing this worrying trend for the fourth consecutive month.
“The global shortage of semiconductors continues to stall the production of engines as well as finished vehicles, with the situation unlikely to ease until 2022.”
He added the government budget unveiled this week was “a missed opportunity to offer much needed short-term support in light of pandemic related supply contraints such as semiconductors”.