24 MPG combined won’t win any efficiency awards in 2015, but for a Buick Regal equipped with the turbocharged 2.0L engine, it represents a reasonable compromise. These aren’t economy cars; they are comfortable, mildly sporty sedans aimed at buyers who value a pleasant driving experience more than squeezing every last drop of fuel. Fuel efficiency is a consideration, certainly, but it isn’t the primary motivator.

City and highway performance

The official EPA figures rate the 2015 Buick Regal 2.0L at 21 MPG in the city and 29 MPG on the highway. The six-speed automatic transmission, while a proven and reliable unit, plays a role in these numbers. With only six ratios to choose from, the engine might not always be operating at its peak efficiency. In real-world conditions, the city MPG figure is generally achievable, assuming a mix of stop-and-go traffic and some periods of steady cruising. The highway figure, however, might require some conscious effort, sticking to moderate speeds and gentle acceleration. Aggressive driving, particularly at higher speeds, will quickly erode fuel economy, bringing it closer to the combined rating. For a more complete look at the Regal family, view REGAL MPG across all years.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Buick Regal 2.0L at $1,800. This calculation is based on driving 15,000 miles per year, with a 55/45 split between city and highway driving, and using the national average fuel price at the time of the EPA’s testing. Keep in mind that this is just an estimate. Your actual fuel costs will vary depending on your driving habits, the type of driving you do (primarily city or highway), and, of course, the ever-fluctuating price of gasoline. Drivers who primarily commute in dense urban areas will likely exceed this figure, while those with longer highway commutes may fall slightly below it.

Real-world expectations

While the EPA provides standardized ratings, real-world fuel economy often differs. Regal 2.0L owners can generally expect to see numbers close to the EPA’s estimates if they drive conservatively. However, the turbocharged engine’s readily available power can tempt drivers to accelerate more aggressively, which will negatively impact fuel efficiency. Factors like tire pressure, vehicle maintenance, and even the weather can play a role. Consistent monitoring through the driver information center can help owners understand their individual fuel consumption patterns and adjust their driving habits accordingly.

How it compares

Compared to other vehicles in its class and from the same model year, the 2015 Buick Regal 2.0L’s fuel economy is middle-of-the-road. For example, the 2015 Acura TLX 2.4L, with its naturally aspirated engine and 8-speed dual-clutch transmission, achieves a combined rating of 28 MPG. The Audi A4 2.0T Quattro, similarly equipped with a turbocharged 2.0L engine and all-wheel drive, manages around 25 MPG combined. A similarly equipped 2015 Ford Fusion 2.0 L EcoBoost delivers about 26. The Buick Regal shopper may find all Buick fuel economy data interesting to view. The Regal is in the same ballpark, suggesting that its fuel economy is competitive for a sedan in its segment with similar engine output and performance characteristics. Consumers prioritizing fuel efficiency above all else might prefer the Acura TLX or consider hybrid options. But the Regal’s appeal lies in its blend of comfort, style, and available power, making the fuel economy a secondary, but important, consideration.

Tips to maximize efficiency

The most important factor in fuel economy is driving style. Avoid aggressive acceleration and hard braking, which consume copious amounts of fuel. Anticipate traffic flow and maintain a steady speed whenever possible to minimize unnecessary fuel burn. Even subtle changes in driving habits can yield noticeable improvements in fuel efficiency over time.

Ensure that your tires are properly inflated. Underinflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended level, which can be found on the sticker inside your driver’s side door or in the owner’s manual. Keeping your tires properly inflated is an easy way to optimize fuel economy.

Regular vehicle maintenance is critical for optimal fuel efficiency. A properly maintained engine runs more efficiently, resulting in better fuel economy. Follow the manufacturer’s recommended maintenance schedule for oil changes, spark plug replacements, and air filter replacements. Neglecting these maintenance items can lead to decreased performance and increased fuel consumption.

Avoid carrying unnecessary weight in your vehicle. Extra weight reduces fuel economy, so remove any items that you don’t need to be carrying around. This includes things like sporting equipment, tools, or other items that are just taking up space in your trunk or backseat. The lighter your vehicle, the less effort it takes for the engine to move it, resulting in better fuel efficiency.

When possible, consolidate your trips. Starting your car after it has been sitting cold is one of the least fuel-efficient things you can do. Try to combine multiple errands into a single trip to avoid unnecessary cold starts. This not only saves fuel but also reduces wear and tear on your engine.