The Seat Leon II (Type 1P), designed by Walter de Silva, is based on Volkswagen Group's excellent PQ35 platform (shared with the Golf V/VI and Audi A3 8P). Positioned as the dynamic and Latin alternative in the VAG compact range, it stands out with its bold design (hidden rear door handles) and sharp chassis. The model underwent a facelift in 2009, marking a major evolution: improved interior finish (which was very plastic on phase 1) and, above all, the transition of diesel engines from unit injectors (IP) to Common Rail (CR) technology, which is much smoother and more reliable. Although this report covers the full range of engines, particular attention is paid to the diesel (TDI) units, which accounted for the vast majority of sales in Europe.