Board Thread:Game Discussion/@comment-31433854-20170602184330/@comment-26829117-20170617234707

All three cars are required for 100%, the Mazda needs to be upgraded for Group C: Rotary Rampage and you only have to pick between upgrading the Jaguar XJR-9 or Porsche 962C. As these are both winnable in TLS then it might come down to which needs the most upgrades to win it. Those with time pressures might upgrade the Jaguar as it is won first and the Porsche is right at the end of this update.