In other words, depreciation is the enemy of those who buy their cars new, as these people have to suffer their cars losing huge chunks of value in short periods. However, it can also be a kind and useful tool to the used car shopper as it turns once out-of-reach cars affordable — like Audi's track-ready flagship RS Q8 SUV, for example. However, while the Lamborghini was priced north of $220,004 back in 2021, the RS Q8 started at $115,495, so it represented a significant saving. Fast-forward five years, and the Audi RS Q8 has gone from being just cheaper in comparison to the Lamborghini to being genuinely affordable for many, with used prices dropping below $70,000. To explore the SUV's depreciation in detail, we've consulted both Kelley Blue Book (KBB) and CarEdge, in addition to current listings on AutoTempest.