UK new-car registrations rose 2 percent last month even as sales of the market's three best-selling brands - Ford, VW and Vauxhall - fell, industry association data showed.
The UK market's April sales of 189,505 were the highest April level for 13 years, the Society of Motor Manufacturers and Traders said in a statement today.
Sales of Volkswagen-brand vehicles plunged 9.7 percent. VW said demand remains strong for the brand's cars and last month's decline compared with the same month in 2015 was because some big rental deals had inflated its numbers last year.
Registrations at other VW Group brands were mixed. Audi was up 3 percent, while Porsche deliveries rose 2.9 percent. Skoda sales fell 1 percent and Seat volume slipped 0.7 percent.
The VW brand was No. 2 by sales in the UK in April. Ford was the best-selling marque, though its sales fell 6.8 percent. No. 3 brand Vauxhall saw volume drop 3 percent.
- Download file, above right, for UK April and 4-month sales.
The SMMT warned that the UK market could be hit by political uncertainty such as the country's Brexit vote on whether to stay in the EU.
"Consumer confidence remains high as buyers continue to capitalize on attractive finance deals, although this could be affected by political and economic uncertainty in the coming months," SMMT CEO Mike Hawes said in the statement.
The UK sales gain in April follows gains in other key European markets last month. Sales rose 8.4 percent in Germany, by 6.5 percent in France and by 12 percent in Italy. In Spain, volume jumped 21 percent.
In the UK, gasoline car registrations rose 3.4 percent in April, while diesel-car sales slipped 0.6 percent.
Four-month sales were up 4.4 percent to 961,285.
Reuters contributed to this report