28 MPG combined doesn’t immediately scream “fuel sipper,” but it’s a respectable figure for the 2019 Acura RLX Hybrid, a car that prioritizes smooth, quiet performance and a comfortable ride over outright efficiency. This isn’t a Prius competitor angling for top fuel economy honors. Instead, it’s a sedan for those who value a refined driving experience and appreciate the subtle efficiency gains of a hybrid system without sacrificing traditional luxury characteristics.

City and highway performance

The RLX Hybrid achieves a commendable 28 MPG in the city and 29 MPG on the highway. These figures are remarkably close, showcasing the benefits of the car’s hybrid powertrain in diverse driving conditions. The electric motors provide a significant boost in stop-and-go traffic, allowing the RLX Hybrid to operate in electric-only mode at lower speeds and during gentle acceleration. The highway MPG is lower than the city number because the electric motor is optimized for city driving and not as effective at highway speeds. This contrasts with many non-hybrid vehicles, which typically see a dip in city fuel economy due to frequent stops and starts.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Acura RLX Hybrid at $2,050. This figure is based on driving 15,000 miles per year and using the national average fuel price at the time of testing. It’s a benchmark figure that allows potential buyers to compare the long-term running costs of the RLX Hybrid against other vehicles in its class. Note that individual fuel costs will vary depending on driving habits, local fuel prices, and the type of fuel used.

Real-world expectations

While the EPA estimates provide a valuable baseline, real-world fuel economy often differs. Drivers who frequently engage in aggressive acceleration or spend a significant amount of time at high speeds may see lower MPG figures. On the other hand, those who prioritize smooth acceleration and use the car’s regenerative braking system effectively may achieve numbers closer to or even slightly exceeding the EPA estimates. The RLX Hybrid’s refined and luxurious nature encourages a more relaxed driving style, which contributes to better fuel economy.

How it compares

The RLX Hybrid’s fuel economy places it competitively within the luxury hybrid sedan segment. The Lexus ES 300h, for example, achieves a significantly higher 44 MPG combined, making it a better choice for buyers prioritizing fuel savings above all else because it provides more MPG. The Acura offers benefits in other areas compared to the Lexus, such as performance. The BMW 530e, a plug-in hybrid, delivers around 29 MPG combined when operating as a hybrid, putting it close to the RLX Hybrid but with the added flexibility of short all-electric driving range. The now-discontinued Cadillac CT6 Plug-In Hybrid managed an EPA-rated 25 MPG combined. These comparisons illuminate the RLX Hybrid’s position: a balanced blend of luxury, performance, and efficiency, rather than an all-out commitment to maximizing MPG. For those interested, you can find RLX MPG across all years to observe changes in fuel economy.

Tips to maximize efficiency

Gentle acceleration is key to maximizing fuel economy in the RLX Hybrid. Avoid harsh acceleration from a standstill, allowing the electric motors to provide initial propulsion before engaging the gasoline engine. This will reduce fuel consumption, particularly in city driving.

Use the regenerative braking system effectively. Anticipate stops and ease off the accelerator early, allowing the car to recapture energy and recharge the battery. Avoiding hard braking not only improves fuel economy but also reduces wear on brake components.

Minimize the use of accessories like air conditioning and heated seats when possible. These features add a load to the engine and can decrease fuel economy. Taking advantage of milder weather to drive with the windows down can make a noticeable difference over time.

Make sure that your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check tire pressure regularly and inflate to the manufacturer’s recommended levels, listed on the tire placard typically found on the driver’s side doorjamb.

Regular maintenance, including oil changes and air filter replacements, ensures that the engine is running efficiently. A well-maintained engine consumes less fuel and produces fewer emissions. For all Acura fuel economy data, be sure to check out our complete resource page.