Scots car sales hit hardest.
Figures show sales have plummeted by more than 38 per cent compared with the national average of 36 per cent.
Just 7829 new cars were registered in November compared with 12,708 at the same time last year.
Douglas Robertson, chief executive of the Scottish Motor Trade Association (SMTA), said: "These are the poorest sales figures I have seen in my 10 years in the industry. There is no doubt confidence is low in the motor industry."
But a spokesman for Scotland's biggest dealership, Arnold Clark, insisted the downturn was good news for consumers.
He said: "Cars are currently cheaper than ever before. The public can make massive savings."