Board Thread:Game Discussion/@comment-2A02:C7D:C14:300:1CF:252B:7520:1A69-20170930110738/@comment-26829117-20170930173406

My advice has always been to approach the game with the following priorities to minimise gold spend:
 * Keep a float - I recommend keeping 1000 at the start of each update
 * Win new cars - it's the biggest gold saving in the game
 * Upgrade for career - only if you have spare gold
 * Upgrade for WTTT - it's worth getting the top cars upgraded for the weekly gold

The following resources might help:
 * Gold, Gold and More Gold - cost breakdown for each update
 * McLaren and Bathurst Update (5.5.0) - detailed breakdown of my progress in this update (as an example of how to track your gold spend)
 * Upgrades Strategy For 100% Completion - cheapest upgrades to complete each series

It all depends where in the game you are as to whether you can afford to do this yet.