Lexus UX Powertrains
Considering we've seen Lexus patent the names UX200, UX250, and UX250h.
I think it's kind of pressing to assume that the UX200 be coming with the 8AR-FTS engine which is a 2.0L turbo 4-cylinder that'll produce approximately 235hp and 258lb-ft of torque (give or take a few). Assuming that the "t" will find it's way in there. Otherwise it could be a modified version of that same engine, without the turbo, that produces 150hp and is bound in Russia... Highly doubt that.
The only reason I say it's a given is because Lexus already has an NX200t, IS200t, GS200t, RX200t, and RC200t and they all use the same engine.
The UX250h could utilize the 2AR-FXE engine that comes in the NX350h which, contrary to what you would think from the name, is a 2.5L hybrid engine that has an output of 154hp and 153lb-ft of torque