UK car production fell by 12.2 percent last month to 86,306 units compared with the year before. This was due to disruption to manufacturers' supply chains from Japan's earthquake and tsunami, the Society of Motor Manufacturers and Traders said on Thursday.
"April's vehicle and engine production figures reflect the global production challenges resulting from the Japanese earthquake," Paul Everitt, the trade body's chief executive, said in a statement.
"All manufacturers are working hard to overcome supply shortages and we expect any downturn to be short lived. The outlook for the UK motor industry is extremely good," he added.
In the first four months of the year, output was 443,536 cars, a rise of 7 percent in year-on-year figures.
Reuters contributed to this report