Two Minivans with more similarities, such as the body structure, starting price, and ground shadow size, than differences, like the horsepower, fuel economy, height, and maximum occupancy. First of all, the 2015 Kia Sedona has a more powerful engine than the 2016 Nissan Quest, and it gets 2 fewer miles on a gallon of fuel. Also, the roofline of the 2015 Sedona is slightly lower than the 2016 Quest's. And finally, you'll seat one more passenger in the Sedona than in the Quest. Among similarities are the body structure, starting price, and ground shadow size.