Board Thread:Game Discussion/@comment-30267511-20171218135624

The attached chart has upgrades ordered in efficiency. I included the total RS and gold costs pertaining to the performance rating. If looking for the cheapest cost to obtain the automobile, only do R$ upgrades until the final required PR is given; if it is below 104 PR needed, then upgrade to the PR, if above 104 is needed then just do R$ upgrades and buy the car at 50% discount for 475 Gold. 