Talk:Concept Car Clash/@comment-25956839-20151012222453

See Real Racing 3 Wiki:Sandbox/Upgrades Strategy For 100% Completion, the Porsche is cheaper to upgrade to PR86.0 for 100% completion. Credit RomGuyony

As this is a sub series it does not NEED to be run, it's upto racers to choose so spend on upgrades or to wait and do it later.
 * What are your goals in Real Racing 3? - Interesting forum post about goals.