Originally Posted by
Red Scorpion
A B4 is the 2WD equivalent of the Q4 class (which have 4WD). Hertz seem to think them interchangeable, and there are plenty of reports of people getting a B4 when they reserved a Q4 (me included).
They have more Nissan Rogues (new 2017) than everything else put together in this class. And they have a lot of them so the chances of getting upgraded are slim. If they were to do so, then they would like upgrade to the next category of SUV, which is a Group L for the AWD models and K4, I think, for the 2WD ones. Same lack of disinction at allocation applies.
If you've booked a B4, regardless of status, they will allocate you a car. You can choose from the 5 Star line of cars available for free, and any that are offered for a $30 a day fixed upgrade. Unlikely to be many SUVs in there, though.
That is very helpful, thank you.