24 MPG combined from the 2020 Buick Regal TourX AWD 2.0L isn’t going to win any hypermiling contests, but it’s a reasonable figure for a vehicle designed as a comfortable, all-weather alternative to a traditional SUV. Think of it as a slightly less thirsty Subaru Outback with a more refined interior and a decidedly European driving feel. This isn’t a car bought by drivers obsessing over every tenth of a mile per gallon; it’s chosen by those who prioritize cargo space, a smooth ride, and confident traction in snow or rain, and are willing to trade a little fuel efficiency to get it.

City and highway performance

The EPA estimates suggest 21 MPG in the city and 29 MPG on the highway. That city number is where the 2.0L turbo engine, combined with the all-wheel-drive system, takes its biggest hit. Stop-and-go traffic demands more frequent boosts from the turbo, and all four wheels are constantly engaged, adding drag. On the open road, however, the Regal TourX settles into a more efficient rhythm. 29 MPG is achievable during steady-state cruising, making it a decent road trip companion, provided you’re not constantly hammering the throttle for passing maneuvers. It’s a powertrain designed for relaxed touring, not aggressive acceleration. A more patient and steady driving style unlocks better real-world results.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2020 Buick Regal TourX AWD is $2,400. This calculation is based on driving 15,000 miles per year, using a national average fuel price. Your individual fuel costs will naturally vary depending on how many miles you drive annually and the price of gasoline in your area. If you primarily drive short distances in the city and rack up a high annual mileage, you can expect to exceed that $2,400 figure. Conversely, if you mostly take long highway trips and drive fewer miles, you might spend less. The Regal TourX performs perfectly well on regular unleaded, which also helps to keep running costs down, because premium fuel is not required.

Real-world expectations

While the EPA numbers provide a useful baseline, real-world fuel economy can vary quite a bit based on driving habits, terrain, and weather conditions. Expect slightly lower numbers in colder climates, especially during winter when the all-wheel-drive system is working overtime. If you live in an area with significant hills or frequently carry heavy loads, your fuel economy will also likely be affected. Owners average around 22-26 MPG in mixed driving, which aligns reasonably well with the EPA’s combined estimate. The key is a smooth and consistent driving style. Avoid abrupt acceleration and braking, and try to maintain a steady speed on the highway to maximize efficiency. Check out all Buick fuel economy data to see how other models compare.

How it compares

The fuel economy of the 2020 Buick Regal TourX AWD is competitive within its niche, but there are always trade-offs. The Subaru Outback 2.5i, for example, achieves a slightly better 29 MPG combined in its naturally aspirated form, although that engine lacks the punch of the Regal’s turbo. A similarly equipped Volvo V60 Cross Country gets around 25 MPG combined. The more expensive Audi A4 Allroad achieves a similar 24 MPG combined. Drivers choose the Regal TourX for its blend of cargo space, interior refinement, and European driving feel. They accept the fuel economy compromise that comes with it, especially given many are former or current owners of Buick sedans and crossovers. For a deeper dive, explore REGAL MPG across all years.

Tips to maximize efficiency

The 2.0L turbocharged engine in the Regal TourX responds well to gentle throttle inputs. Avoid aggressive acceleration and try to anticipate traffic flow to minimize hard braking. The turbocharger is efficient when running at low boost, but excessively using it will significantly reduce fuel economy. Visualize “floating” over the road rather than constantly surging forward and braking.

Ensure your tires are properly inflated to the recommended pressure listed on the driver’s side door jamb. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. A simple tire pressure check can make a noticeable difference over time, especially during long road trips.

Minimize unnecessary weight in the vehicle. Carrying around extra cargo adds load, impacting fuel efficiency. Remove any items from the trunk or cargo area that you don’t need on a regular basis. Every pound counts, especially in stop-and-go city driving.

Use cruise control on the highway to maintain a constant speed and avoid fluctuations in throttle input. Cruise control helps to optimize fuel consumption by keeping the engine operating at its most efficient point. However, be mindful of using it in hilly terrain, as it can sometimes cause unnecessary downshifts.