The 2016 Acura RLX 3.5L 6-cyl gets 23 MPG combined. This underlines the car’s position as a comfortable and capable commuter, not necessarily a fuel-efficient vehicle. This number is likely acceptable to buyers who prioritize a refined driving experience and a well-appointed cabin over outright efficiency. These are drivers who appreciate Acura’s reputation for reliability and understated luxury and who are willing to make a small compromise on fuel economy to obtain them.

City and highway performance

This 2016 RLX, equipped with its 3.5-liter V6 and a six-speed automatic transmission, gets an EPA-estimated 20 MPG in the city and 30 MPG on the highway. The city figure reflects stop-and-go traffic, where the engine spends more time at idle or under acceleration; both are inherently less fuel-efficient. The 30 MPG highway rating showcases the engine’s ability to cruise efficiently at steady speeds, but it still can’t compare to a hybrid or a smaller, turbocharged engine. Its six-speed automatic, while smooth and responsive, is less fuel efficient than the eight- or nine-speed transmissions found in many of its modern competitors.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2016 Acura RLX 3.5L is $2,500. This figure is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs may vary depending on your driving habits, local fuel prices, and the type of fuel you use. The $2,500 estimate provides a benchmark for understanding the ongoing cost of ownership. For buyers prioritizing fuel economy above all else, this number can be an important point of consideration before viewing all Acura fuel economy data.

Real-world expectations

While the EPA estimates provide a useful comparison tool, real-world fuel economy often deviates from the official figures. Factors like driving style, traffic conditions, and even tire pressure can all influence the actual MPG you achieve in your RLX. Aggressive acceleration, frequent hard braking, and extended idling will negatively impact your fuel economy.

However, adopting a more relaxed driving style and maintaining proper tire inflation can help you get closer to the EPA estimates. Drivers can explore RLX MPG across all years to gauge what kind of deviations may exist.

How it compares

In the mid-size luxury sedan segment, the 2016 Acura RLX’s fuel economy is competitive but not outstanding. The Lexus ES 350, a frequent competitor, achieves an EPA-estimated 24 MPG combined, outperforming the RLX by a small margin. Newer turbocharged four-cylinder models, such as the BMW 528i, can achieve even higher figures, closer to 27 MPG combined, prioritizing efficiency at the expense of the Acura’s strong V6 power. The Cadillac CTS (2.0L turbo) is another competitor that offers slightly better economy at 24 MPG combined.

These differences in MPG may seem small on paper, but they can add up over the long term, influencing the total cost of ownership. For those for whom budget is the primary consideration, this difference is a factor to seriously consider.

Tips to maximize efficiency

Avoid aggressive acceleration and braking. The Acura RLX’s V6 engine delivers plenty of power, but using it carefully will significantly improve your fuel economy. Gentle acceleration and anticipating traffic conditions will help you maintain a more consistent speed, reducing the need for sudden bursts of power or hard braking.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the manufacturer’s recommended level, which can be found on a sticker inside the driver’s side doorjamb. Proper tire inflation also improves handling and extends the lifespan of your tires.

Minimize idling time. Idling consumes fuel without covering any distance. If you anticipate being stationary for more than a minute, turn off the engine. Modern engines are designed to restart quickly and efficiently, making it more fuel-efficient to switch off the engine than to let it idle, especially in bumper-to-bumper traffic.

Use cruise control on the highway. Cruise control helps maintain a constant speed, minimizing fluctuations in fuel consumption. By avoiding unnecessary acceleration and deceleration, cruise control can significantly improve your highway fuel economy, helping you get closer to that 30 MPG estimate.

Keep up with scheduled maintenance. Regular maintenance, such as oil changes and air filter replacements, ensures that your engine runs efficiently. A clean air filter allows for optimal airflow, while fresh oil reduces friction and wear. Adhering to the manufacturer’s recommended maintenance schedule will not only improve fuel economy but also prolong the life of your engine.