Talmácsi raced with a previously developed Aprilia engine, the so-called RSW, while his Spanish teammates, Héctor Faubel and Sergio Gadea used the new RSA engine which proved to be a bit faster but less reliable than the older one. Mattia Pasini's 2007 season demonstrated the low reliability of the engine with his motor problems which forced him to retire from many races in the beginning of the season. This may have cost him the world championship title, because later he showed great competitiveness (9 pole positions and 4 wins).