The 2018 Buick Envision FWD with the 2.5L 4-cylinder engine gets 25 MPG combined, a perfectly acceptable figure. It isn’t a hybrid aiming for ultimate efficiency, nor is it a powerful SUV prioritizing horsepower. It’s a comfortable, quiet, and reasonably priced crossover for buyers who value a smooth ride and understated luxury. The fuel economy simply needs to be “good enough” to avoid being a deal-breaker, and for most, it is.

City and highway performance

The EPA estimates for the 2018 Envision 2.5L FWD are 22 MPG in the city and 29 MPG on the highway. The city figure reflects the nature of this engine and transmission: a naturally aspirated 4-cylinder paired with a traditional 6-speed automatic. It needs to work harder in stop-and-go traffic, impacting fuel consumption. The 29 MPG highway figure indicates its cruising ability. Once up to speed, the Envision settles into a comfortable rhythm, and the engine’s power delivery is sufficient for maintaining speed and passing without excessive strain, leading to better fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Buick Envision 2.5L FWD at $1,750. This is based on driving 15,000 miles per year, using then-current national average fuel prices. This is a useful way to compare the Envision to other vehicles, although individual fuel costs will vary depending on driving habits and local fuel prices. It’s a benchmark for understanding the overall cost of ownership.

Real-world expectations

While the EPA estimates provide a standardized measure, real-world fuel economy can vary. Factors such as driving style, traffic conditions, terrain, and tire pressure impact the MPG you achieve. Owners who prioritize smooth acceleration and consistent speeds are more likely to see figures close to the EPA estimates. Aggressive driving, frequent short trips, and hilly terrain would worsen fuel economy. Keeping up with scheduled maintenance, particularly tire inflation and air filter replacement, will maintain optimal efficiency. Don’t expect hybrid-like numbers, but sensible driving should keep you close to the official figures. Review ENVISION MPG across all years to get an idea of how consistent these numbers have been.

How it compares

The 2018 Envision 2.5L FWD exists in a competitive segment. The Acura RDX (non-turbo models) from that era achieves similar fuel economy, around 23-24 MPG combined. The Lexus NX 300 also lands in the mid-20s for combined MPG. A direct competitor like the Ford Escape with its 1.5L EcoBoost engine might offer slightly better combined fuel economy, around 26-27 MPG. This comparison highlights the Envision’s place within the market: it’s not the most fuel-efficient option, but it’s not significantly worse than many of its rivals. Buyers choose the Envision for its comfort, features, and brand reputation.

For a full overview of the brand, see all Buick fuel economy data.

Tips to maximize efficiency

The 2.5L engine in the Envision isn’t designed for aggressive acceleration. Gentle starts and gradually increasing speed allows the engine to operate more efficiently, reducing fuel consumption. Anticipate traffic flow and avoid sudden braking. A smooth, consistent driving style will have a noticeable impact on your MPG.

Tire pressure is critical for fuel economy. Check your tires regularly and ensure they are inflated to the pressure recommended on the doorjamb sticker. Underinflated tires create more rolling resistance, forcing the engine to work harder and burn more fuel. Even a few PSI below the recommended level can negatively affect fuel economy.

Unnecessary weight in the vehicle degrades fuel economy. Remove any items you don’t need from the trunk and back seat. Extra cargo adds to the vehicle’s overall load, requiring more energy to accelerate. This is especially important for a vehicle the size of the Envision, where even moderate weight increases can add up.

Avoid extended idling. If you’re stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently, and idling wastes fuel. It’s a simple habit that can improve your overall fuel economy, particularly in city driving.

Regular maintenance is important for good fuel efficiency. Ensure that all scheduled maintenance is performed on time, including oil changes, air filter replacements, and spark plug replacements. A well-maintained engine runs more efficiently and delivers better fuel economy. Don’t skip those service appointments.