The EPA's gas mileage ratings for the Buick Enclave aren't particularly high, but given its ability to carry up to eight passengers, it's reasonably efficient on fuel.The agency pegs the Enclave at 17 miles per gallon city, 24 miles per gallon highway, and 19 mpg combined, when it's outfitted with front-wheel drive. Those figures aren't so far off from comparable cars like the Ford Flex, but today's five-passenger family sedans regularly top the 35-mpg highway number. You'd have to carry those three extra passengers on a regular basis to justify the added cost of gas.
The Enclave's ratings fall to 16/22 mpg or 18 mpg combined when it's fitted with all-wheel drive.
In our experience, the EPA numbers seem a little optimistic, based on the real-world observations of our editors along with other review sources. In our last significant stint with a previous mode-year Enclave, we saw an indicated 17 mpg over a range of driving conditions.