Lexus has some advantages over the X3, but performance and cargo space are not comparable, esp for the price. The Lexus should outlast the BMW though.
BMW X3 xDrive30i (4cyl AWD) $47k, 0-60 @6 seconds, 28.7-62.7 Cargo, 21/28 MPG
Comparable RX500h ~$65K, 0-60 @5.9 seconds. 2022 cargo is 18.4-56.3 (the length of the car is the same for 2023 this shouldn't change much), MPG is TBD but Lexus said it should be the same as the 2022: 19/26 for AWD 350, I'm curious where the 500h would land as this is the performance model. Even the Tundra's hybrid engine isn't significantly more fuel efficient.
Numbers wise, this doesn't quite add up for a $65k performance vehicle. 5.9 seconds really is average at best, especially for what they plan to charge. A hybrid F-150 can do it in 5.3 seconds. But, numbers aren't everything, the RX has infinitely more style than a plain jane X3, not to mention the reliability. At least the IS500 has a V8 to compensate for the less competitive metrics.
As a buyer, i think the sweet spot is the RX450h or the 350h.