UK car production falls -3.8% in September to 122,256 units, rounding off turbulent first nine months for sector.
Manufacturing for both domestic and overseas markets declines, -5.1% and -3.4% respectively.
Year-to-date performance down -15.6% as political and economic turmoil, softness in key global markets and operational changes impact output.
On day UK was due to leave the EU, sector calls for end to uncertainty and an ambitious future relationship based on tariff-free and frictionless trade.