The inventory buildup that's visible on dealer lots is real, but I'd push back a bit on framing this as purely demand softening. What's actually happening is more nuanced - Toyota ramped up production significantly after the supply chain crunch, and now they're dealing with the lag between manufacturing decisions made months ago and current market conditions. The company overestimated how quickly demand would stay hot, especially as interest rates stayed elevated and consumer spending patterns shifted. So it's not just that fewer people want Toyotas; it's that production forecasts were too optimistic.
There's also a timing element worth considering. August tends to be a slower month industrywide as dealers prepare for new model year arrivals. Toyota's numbers probably look worse than they are when you're comparing month-to-month without accounting for seasonal patterns. That said, weaker global demand is real - especially in markets like China where competition is brutal and EV adoption is outpacing traditional automakers' transition speed.
The negotiating leverage angle from the question is actually solid though. More inventory sitting around does give buyers room to haggle, and dealers are motivated to move units. But this situation also suggests Toyota (like most legacy automakers) is racing to adjust production and product mix while managing the transition to electrification, which is costly and complicated.