Board Thread:Game Discussion/@comment-37741609-20181207084628/@comment-26829117-20181208101518

My advice, somewhat outdated maybe, is to unlock all career series as cheaply as possible to give yourself options and to always try and purchase cars and upgrades at lowest cost. The Upgrade strategy gives you a good guide to how much you need to upgrade each car to optimise completion. Always keep a float of around 1000 to ensure you can take advantage of sales.