5. Poor Fuel Economy
Compared to GM’s more capable large utility vehicles, you’ll probably end up burning less fuel with an Enclave. That said, it’s still a pig. The on-board computer reported an average of 15.7 MPG. That includes roughly five hours of constant-speed highway driving and a week’s worth of short trips to and from the AutoGuide.com office in city traffic.
For perspective, the city rating is 16 MPG. That means in the real world, you might see average fuel consumption below the worst-possible officially estimated rating.