The Terraza was a great van for the first 6000 miles after that stuff started going wrong with it. The interior is very noisy. The back hatch rattles. The passenger power sliding door pops open after you close it. The anti-lock stabilitrak has a warning and service brakes soon message, and the dealer can't find the problem. There is a clunking noise coming from the left front. I had an Oldsmobile van that this van replaced, I wish the Buick was as nice as the Oldsmobile. I would not purchase another one.
The exterior design is nice.
Start over and look at the Honda and Toyota Mini Vans, they are doing something right!