23 MPG combined from the 2021 Acura RDX AWD A-Spec isn’t going to win any efficiency awards, but it’s a reasonable return for a stylish, sporty, and tech-laden crossover aimed at younger professionals who prioritize driving experience and curb appeal over ultimate fuel savings. The RDX A-Spec isn’t about hypermiling; it’s about delivering a satisfying blend of performance and practicality with swagger.

City and highway performance

The EPA estimates for the RDX A-Spec AWD are 21 MPG in the city and 26 MPG on the highway. These numbers reflect the reality of a turbocharged 2.0-liter engine powering an all-wheel-drive system. Stop-and-go city driving tends to highlight the engine’s thirst, while highway cruising allows the ten-speed automatic transmission to settle into its most efficient gear, helping to stretch each gallon a bit further. Drivers should note that aggressive acceleration, a characteristic of the A-Spec’s sporty style, will invariably drag down those city figures. The highway number, while attainable, demands a disciplined right foot.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2021 Acura RDX A-Spec AWD is $2,500. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that this is just an estimate, and your actual fuel costs will vary depending on your driving habits, local fuel prices, and the amount of city versus highway driving you do. Drivers who exceed 15,000 miles annually, or who live in areas with higher-than-average fuel costs, will naturally see their annual spending increase.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy can differ. Some drivers report numbers slightly below the EPA estimates, particularly in combined driving. Drivers who frequently accelerate quickly will likely see their numbers dip further. However, those who drive smoothly can often achieve figures closer to, or even slightly above, the EPA’s projections. The RDX A-Spec rewards responsible driving, but it also encourages spirited performance.

How it compares

The RDX A-Spec’s fuel economy positions it competitively within its segment. The BMW X3 xDrive30i, another popular choice, manages around 24 MPG combined. The Audi Q5 45 TFSI Quattro achieves a similar 23 MPG combined. The Lexus NX 300h, a hybrid option, boasts a significantly higher 31 MPG combined, but comes with a different driving experience and a price premium. For buyers prioritizing sporty aesthetics and handling, features unique to the A-Spec, the RDX’s fuel economy represents a reasonable trade-off. Buyers considering the RDX often value AWD over hybrid fuel economy, something they might not realize until they compare RDX MPG across all years. You can see all Acura fuel economy data on our site.

Tips to maximize efficiency

The RDX A-Spec’s turbocharged engine benefits from smooth, gradual acceleration. Avoid aggressive throttle inputs, especially from a standstill, as this is where the engine consumes the most fuel. Anticipate traffic flow and maintain a steady speed whenever possible to minimize the need for sudden acceleration and braking.

Use the RDX A-Spec’s drive mode selector. The “Normal” or “Comfort” mode typically offers the best balance of performance and fuel efficiency. The “Sport” mode prioritizes throttle response and engine output, which negatively impacts fuel consumption.

Ensure your tires are properly inflated to the recommended pressure. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Regularly check your tire pressure, especially during temperature changes.

Regular maintenance is essential for optimal fuel economy. Keep your engine properly tuned, and replace air filters and spark plugs according to the manufacturer’s recommendations. A well-maintained engine runs more efficiently and delivers better fuel mileage.

Reduce unnecessary weight in the vehicle. Remove any items from the trunk or rear seats that are not essential. Excess weight puts additional strain on the engine and lowers fuel economy.