New car registrations in the UK rose 11.5% in April to 148,793, the tenth successive monthly increase.
However, the SMMT noted that the increase is against a weak market last year and that the scrappage incentive accounted for just 8% of April sales.
The SMMT recently raised its forecast for the UK car market in 2010 to 1.924m units following the strong start to the year.
“As our new government establishes itself, the priority must be sustaining and strengthening the economic recovery with particular focus on encouraging the availability of more and better priced finance for businesses and consumers,” said Paul Everitt, SMMT chief executive.
“April was another good month for the UK motor industry with private buyers responding positively, despite the end of the scrappage scheme.”
The UK car market is projected by the SMMT to edge closer to 2m units in 2011 before a 6% gain takes it to 2.06m units in 2012.