I'm just getting these differences burned into my memory. Them I'll probably forget in a few months after the new car excitement wears off.It’s easy. Premium has dark wheels and no fog lights, Premium plus wheels have the brushed accents and fog lights. Overtrail will have matte window surrounds, Overtrail plus will have glossy. Luxury will have the 22in wheels with fixed running boards, Luxury plus will have retractable running boards.
For a Lux vs. Lux+ is, if the running boards are retracted you know it's a "+." If not retracted you can't use to differentiate because you don't know if they retract. So then then I look for a Dynamic Sky roof or a moon roof, a moon roof being shorter. If the moon roof is open it's an easy tell. This is my thinking, and how I process it.
Processing all these details is a challenge when I pass another GX coming at me in the opposite direction. The other day I was following a GX with Lux trim, and even with 20 seconds of looking I couldn't tell if it was a "+" or not. No matter it's still a pleasant thing to do.