The Fiesta was the only car to break the 100,000 sales mark in 2010, and finished nearly 20,000 sales ahead of the second place Vauxhall Astra.
It is the second year in a row the Ford Fiesta has been the best-selling car in the UK, and cemented Ford’s position as the most popular brand.
The supermini, available in three- and five-door variations, was the best-selling model in ten out of twelve months of the year and never fell out of the top three sellers.
However, there was good news for Vauxhall as strong sales in December meant the Astra outsold its perennial rival the Ford Focus by 3,000 cars in 2010.
The hatchback has often struggled to compete with the Focus, but an upgrade to the interior and Vauxhall’s low-CO2 ecoFLEX engines has propelled the British-built car into second place for the year.
The fourth best-selling car of the year is another Vauxhall, the Corsa supermini, which sold 77,398 units in 2010, just 400 less than the Focus.
Other cars to make the top ten included the Volkswagen Golf and Polo, the Peugeot 207 supermini, BMW 3 Series, Mini and the Nissan Qashqai.
The final figures were released by the Society for Motoring Manufacturers and Traders today, and show the Astra and Corsa topped the December sales charts in a late surge.
In total, new car registrations reached two million in the UK, 1.8 per cent higher than in 2009. However, in the second half of the year registrations fell drastically, with an 18 per cent dip in December.
This is mainly down to the end of the scrappage scheme early in 2010, but the SMMT predicts demand for new cars will slowly recover in 2011 despite the tough economic conditions.
Ford Fiesta prices start from £9,995. To test drive a Ford Fiesta, click here.