EPA Fuel Economy: 28 MPG Combined

The 2025 Honda Acura ILX 2.0L 4-cylinder Base model delivers a combined EPA fuel economy rating of 28 MPG, positioning it as an efficient choice in the compact luxury sedan segment. This rating reflects a balanced performance between city and highway driving conditions, making the ILX a practical option for commuters and daily drivers seeking reasonable fuel efficiency without sacrificing the premium features expected from the Acura brand. The 2.0L four-cylinder engine paired with a CVT automatic transmission works together to optimize fuel consumption across various driving scenarios.

The 28 MPG combined rating represents solid efficiency for a luxury sedan, particularly one equipped with a responsive 2.0-liter engine. Unlike larger engines that demand more fuel to operate, this four-cylinder powerplant provides adequate performance while maintaining reasonable consumption rates. The continuously variable transmission adjusts engine RPMs throughout acceleration and cruising, helping to keep the engine operating in its most efficient range. For drivers prioritizing a balance between driving dynamics and fuel economy, the ILX Base model offers a practical alternative to both larger luxury sedans and smaller economy cars.

City vs Highway Performance

The ILX Base demonstrates the typical efficiency pattern found in most vehicles, with better performance on the highway than in city driving. The EPA rating shows 25 MPG in city driving conditions and 33 MPG on the highway. This 8 MPG difference reflects the reality of urban driving, where frequent stops, starts, idling, and lower speeds require more fuel consumption per mile traveled. Highway driving, characterized by sustained speeds and fewer acceleration events, allows the 2.0L engine and CVT transmission to operate more efficiently, resulting in the higher 33 MPG highway rating.

City drivers will experience the 25 MPG rating during typical commuting with traffic lights, congestion, and variable speed changes. Highway trips on interstate routes or open roads should approach or occasionally exceed the 33 MPG figure, depending on driving habits and road conditions. Drivers who split their time between both environments will find their real-world fuel economy hovering near the 28 MPG combined rating. Understanding this distinction helps owners set realistic expectations and plan fuel budgets accordingly.

Annual Fuel Cost

Based on the EPA estimates and average driving patterns, calculating annual fuel costs for the 2025 ILX Base provides practical budgeting information. Using the combined 28 MPG rating, 15,000 miles driven annually, and a fuel price of $3.50 per gallon, the math breaks down as follows:

Annual miles ÷ Combined MPG = Gallons needed per year
15,000 miles ÷ 28 MPG = 535.7 gallons per year
Gallons per year × Fuel price = Annual fuel cost
535.7 gallons × $3.50 = $1,875 annually

This calculation assumes consistent fuel pricing and average driving patterns. Owners who drive more city miles than highway miles may experience slightly higher annual costs, while those with more highway-focused driving patterns could see costs approach $1,800 or less. Fuel prices fluctuate regionally and over time, so this estimate serves as a baseline for typical operating costs.

Real-World MPG Expectations

EPA ratings represent controlled test conditions, so actual fuel economy varies based on individual driving habits, vehicle maintenance, and environmental factors. Most 2025 ILX Base owners report real-world fuel economy ranging from 26 to 31 MPG, slightly different from the EPA combined rating depending on their specific driving patterns. Aggressive acceleration, frequent idling, and stop-and-go city traffic generally reduce efficiency, while steady highway cruising tends to improve it.

Several factors influence real-world performance beyond EPA estimates. Maintaining proper tire pressure, keeping the engine properly tuned, and using the recommended grade of motor oil all contribute to optimal efficiency. Cold weather operation temporarily reduces MPG, as does carrying heavy loads or towing. Drivers who adopt consistent, moderate acceleration and maintain steady speeds will likely achieve fuel economy at or near the EPA combined rating.

How It Compares

Comparing the ILX Base to competing compact luxury sedans provides context for its efficiency standing. The 2025 Lexus IS 300 with a 2.0L turbocharged engine achieves approximately 26 city and 35 highway MPG (combined 29 MPG), slightly edging the ILX. The 2025 BMW 330i with similar displacement produces around 29 MPG combined. The 2025 Mercedes-Benz C 300 delivers approximately 27 MPG combined. Among its direct competitors, the ILX Base performs competitively, offering fuel economy in line with class expectations while providing the reliability and resale value Acura owners value.

Tips to Maximize Efficiency

• Maintain steady speeds: The CVT transmission operates most efficiently at constant RPMs, so maintaining consistent highway speeds improves fuel economy significantly.
• Minimize idling: Modern engines use fuel when idling; turning off the engine during extended stops conserves fuel.
• Check tire pressure monthly: Underinflated tires increase rolling resistance, reducing MPG. Maintain the pressure listed on the driver’s door jamb.
• Use premium fuel cautiously: The ILX Base runs on regular unleaded; premium fuel offers no efficiency benefit and increases fuel costs unnecessarily.
• Avoid excessive weight: Removing unnecessary cargo reduces the engine’s workload and improves overall fuel economy.

Frequently Asked Questions

Does the 2025 ILX Base require premium gasoline?
No. The 2025 Honda Acura ILX 2.0L Base model operates on regular unleaded gasoline (87 octane). Using premium fuel provides no performance or efficiency advantage and unnecessarily increases fuel costs.

What transmission does the ILX Base use?
The ILX Base comes equipped with a continuously variable transmission (CVT) automatic. This transmission type adjusts smoothly through infinite gear ratios, optimizing efficiency throughout various driving conditions compared to traditional multi-speed automatics.

How does real-world MPG compare to EPA ratings?
EPA ratings represent controlled test conditions. Real-world fuel economy typically ranges 2-5 MPG above or below EPA estimates, depending on driving habits, maintenance, weather, and road conditions. Highway-focused drivers may exceed the 33 MPG highway rating, while city drivers might see slightly less than the 25 MPG city rating.

The 2025 Honda Acura ILX 2.0L 4-cylinder Base model offers practical fuel efficiency for luxury sedan buyers. With a 28 MPG combined rating and straightforward operating costs, it provides a balanced option for those seeking quality engineering and reliability without excessive fuel expenses.