I work at a ford dealership and I drive lots of 2020+ explorers every day.
First thing I want to mention is these new 2020+ model year explorers are completely different than the pre-2020 explorers. Older explorers had transverse fwd/awd configuration, and new explorers do not have fwd models. All 2020+ models are RWD, or 4WD (with a truck style transfer case). There are no more FWD based “PTU” which was always the weak point on older AWD Explorer’s and Taurus’.
From my experience, the new explorers are pretty solid overall. They seem to last (if all fluids and routine maintenance items are actually being maintained), and they drive pretty well for an SUV. The ST Explorers are very nice, and actually has the power and handling to be called a “performance SUV”.
Interior build quality is questionable with the Explorers. Panel fitment, and body design is pretty cheaply done in my opinion, but the engine/drivetrain seems pretty solid in my opinion.
The 10speed can last if you change the fluid/filter every 40,000 miles or sooner. But the one issue I always see is the internal aluminum clutch case. It’s a material choice issue, and the case wears out. The clutches never seem to burn out or wear out at all. Most times, when the transmission is taken apart, the original clutches go back in, because they are in perfect shape. It’s always the internal aluminum clutch case that’s the issue.
I’ve seen many 10 speeds last well over 100,000 miles with zero issues. These are the ones that get fluid/filter changes every 40,000 miles or sooner.
The 2.3 Ecoboost is the one to get on these Explorers. I would skip the 3.3L v6 and the 3.0 v6 Ecoboost. 2.3 Ecoboost last, and they never seem to have any major issues.
The new 2020+ explorers are pretty solid vehicles, and I would get an 2020+ explorer over any of the other “big 3” mid/large SUV.