Horribly inconvenient for getting kids in and out of back, and it is HARD to buckle them in. My 4 year old has a hard time buckling himself since the rear seatbelt is just loose straps, so it can be pulled out of the seat, therefore it takes two hands to buckle, not easy for a little on in a car seat. Your child will also not be able to crawl in the back on his/her own. The gap is very small to climb in the back, so you kind of have to pitch them back there. Unless you plan on the child riding in the front, which is illegal in most states. In SC, under 5 and 50lbs, child has to be in the back seat in booster/car seat unless there are no back seats, or the rear is full of children younger or smaller than the front rider.
As for the 20mpg, not sure anyone gets 20mpg except maybe bone stock, at 65mph, flat land on the freeway. I would guess for a non-lifted VX 15-17 is more realistic. I get 12-13.5 mpg pending temp and mood.
Maybe the VX isn't the car for you, but it is sweet, if you can budge on the mpg, and live with the rear seat inconvenience, then go for it!!! At 28k miles, that is a rare deal. I don't use my VX as a kid hauler, but we have done it when other truck is in shop, and it is no fun.![]()