The Copa model adds up to £1,000 worth of equipment and styling touches to the hatchback but costs the same as the original model.
This means entry-level S models now come with dual-zone climate control, cruise control and unique Copa upholstery for no extra cost when the Copa specification is chosen.
However, unlike the Seat Ibiza, the Seat Leon Copa adds equipment to two different models in the range, the entry-level Leon S and the higher-spec Leon SE.
SE Copa versions receive a Seat media system – comprising an eight-speaker MP3 compatible radio/CD and USB connectivity – as well as rear parking sensors, automatic lights and rain sensing wipers, and the Copa upholstery found in the S version.
Available on the five-door hatchback 1.2-litre 105ps petrol engine or a 1.6-litre TDI 105PS with a choice of manual of DSG-auto transmission, the new, high-tech Seat Leon is available from £16,180.
Seat Leon SE Copa models usually start from £16,940 on-the-road for the petrol option, but until June Seat will cut £1,000 off the asking price for both models.
Seat UK’s Head of Marketing, Steve Robertson, said: "I’m convinced that the debut of these new models will see even more buyers heading for Seat showrooms."
The Seat Ibiza and Seat Leon are part of a six-strong Seat range of cars in the UK. Starting with the supermini-size Ibiza in three-door, five-door or estate, the range consists of the Leon hatchback, Exeo saloon and estate and Altea MPV. A larger MPV, the Altea XL and the all-new seven-seat Seat Alhambra people carrier complete the UK range.
All Seat models include a diesel Ecomotive version, which signifies a low-CO2 and fuel efficient model. The best-performing model in each range in terms of efficiency bears the E Ecomotive tag.