Hi,
My first Lexus too (NX 300h Premium) and registered August 1st 2017 after having driven a Honda CRV diesel for 9 years. Was going to stick with another diesel but after all the uncertainty popped into my local Lexus dealer to see what they had. Offered a test drive and on impulse bought the one in the show room that day. Still getting used to the car as it is so different to the Honda. Likes: quiet drive, looks, easy to drive, comfort, all the tech. Dislikes: reflections in windscreen, boot size, visibility (luckily have the all round camera view), poor user guide and a lot of the tech not explained clearly. Had to get the full user manual and navigation manuals off Lexus. Luckily they supplied them free of charge.
Currently getting around 40 mpg but only doing short journeys. Hoping it will improve on longer journeys. Quite hilly where I live so all engine on way to local shops but mainly electric on way back as down hill. Pity the all electric mode is only over a short distance. Also noticed that one 16 mile town journey home was mainly electric and good economy but a week later at night poor economy as more engine driven. However it is a nice car to drive comfortable.