Engine manufacturing in the UK so far this year has surpassed the 2m units level.
In the nine months to the end of September, UK engine output stood at 2,001,898 units, some 5% above the same period last year.
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Engine production was up 3.9% in September with more than 248,463 units made for home and export markets.
Domestic demand for engines is up 11.1% compared with September last year, but exports make up 51.3% share of output.
The SMMT stressed the importance of the export business to Europe for UK engine manufacturing.
Mike Hawes, SMMT Chief Executive, said: "UK engine manufacturing has repeatedly demonstrated the benefits of long-term investment into R&D and plants. It's pleasing to see production exceed the 2 million mark already but future success depends on strong demand at home and abroad. The European market, which is the destination for the majority of our engines, continues to grow so it's important we maintain free and frictionless access."
