Sales of over 7,250 cars saw the Spanish manufacturer sell more cars in March than any other month in its 25-year history in the UK.
It has allowed the Volkswagen-owned brand to expand its market share to nearly two per cent – an increase of 13 per cent on last month.
Seat is one of few manufacturers to record and overall increase in sales in the first three months of 2011 after figures from the Society of Motoring Manufacturers and Traders (SMMT) show the brand sold 10 per cent more than the same period in 2011.
This is all the more remarkable because the 2010 figures were bolstered by the UK scrappage scheme, which offered large discounts on new cars when an older model was traded in.
Peter Wyhinny, managing director of SEAT UK, said: "Our fresh, exciting and comprehensive portfolio of products – from sporty Ibiza through sleek Leon and luxurious Exeo to the multi award-winning new Alhambra – is clearly appealing to new car buyers like never before."
The Seat Alhambra was one of the surprising successes of last year. The practical seven-seat MPV has won a host of awards, including What Car? MPV of the year for 2011.
The refined drive, high level of equipment and fuel-efficient diesel engines have all been named as reasons for the success of the Alhambra, and prices starting from £22,800 undercut the almost identical Volkswagen Sharan in the UK.
Wyhinny added:"The success of our vibrant young range of cars, linked to our strong and growing network of dealers and consistently impressive residual values, sees us building an increasing presence on the UK’s roads."
Seat says a high number of orders for its car range will see the sales growth continue into the summer in the UK.