31 MPG combined is a core appeal of the 2018 Mazda 3 4-Door with the 2.0L engine. This isn’t a hybrid chasing maximum efficiency at the expense of driving pleasure, nor is it a budget-basement economy car. It’s a sweet spot. Mazda targeted drivers who want a car that’s genuinely enjoyable to drive but remains sensible for everyday use, and fuel economy is a key part of that. These are often buyers who appreciate a well-balanced chassis and responsive steering as much as they value saving money at the pump.

City and highway performance

The EPA estimates for city and highway driving reflect the Mazda 3’s dual personality. The 28 MPG city rating shows that the engine’s stop-and-go performance is respectable, aided by its responsive throttle and smooth-shifting six-speed automatic transmission. In city driving, efficient driving habits will be rewarded.

On the highway, the 37 MPG estimate underscores the 2.0L engine’s ability to cruise comfortably and efficiently. This makes the 2018 Mazda 3 an ideal commuter car that is cheap to run on long journeys.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2018 Mazda 3 4-Door 2.0L is $1,400. This figure is based on driving 15,000 miles per year and using national average fuel prices. The EPA’s calculation provides a standardized baseline for comparing different vehicles’ running costs, but naturally, your actual fuel costs will vary depending on your driving habits, local fuel prices, and the specific conditions in which you drive. However, at $1,400 per year, the 2018 Mazda 3 remains an affordable choice for drivers seeking to minimize their transportation expenses. View all Mazda fuel economy data here.

Real-world expectations

While EPA estimates provide a valuable point of reference, real-world fuel economy can vary. The 2018 Mazda 3 is generally regarded as being relatively close to its EPA numbers in real-world driving.

Drivers who prioritize smooth acceleration, maintain consistent speeds, and anticipate traffic flow are more likely to achieve or even exceed the EPA’s estimates. Aggressive driving, heavy acceleration, or frequent short trips can reduce fuel economy below the rated figures. As with any vehicle, careful driving habits are critical for realizing the car’s full fuel-saving potential. See 3 MPG across all years.

How it compares

Competitors like the Honda Civic offer comparable fuel economy in certain configurations. For example, a 2018 Honda Civic sedan with the 2.0L engine achieves roughly similar numbers. The Toyota Corolla, another popular choice in this segment, also provides fuel efficiency in the same ballpark. The Hyundai Elantra, with its various engine options, presents another alternative, with some trims exceeding the Mazda 3’s MPG slightly.

The complete package matters. Some buyers prioritize Mazda’s engaging driving dynamics even if it means sacrificing a tiny bit in fuel economy compared to a more appliance-like competitor.

Tips to maximize efficiency

Avoid rapid acceleration and hard braking. The 2.0L engine is responsive enough to get you up to speed without needing to bury your foot in the throttle. Gentle acceleration conserves fuel and also reduces wear on your tires and brakes.

Maintain a consistent speed on the highway. Use cruise control when appropriate to hold a steady pace. The Mazda 3’s six-speed automatic is well-geared for highway cruising, allowing the engine to operate at lower RPMs for maximum fuel efficiency. Avoid unnecessary lane changes, which require bursts of acceleration.

Ensure your tires are properly inflated. Low tire pressure increases rolling resistance, which directly impacts fuel economy. Check your tires regularly. The correct tire pressure can be found on the sticker on the driver’s side door.

Reduce unnecessary weight in the vehicle. Carrying extra items in the trunk or backseat adds weight, forcing the engine to work harder. Remove anything that isn’t essential for your daily driving. Simple measures like this can yield small improvements in fuel efficiency over time.

Consider using the air conditioning sparingly. While air conditioning is a necessity in warm weather, using it increases the load on the engine. On cooler days or at lower speeds, try opening the windows or using the ventilation system to reduce the strain on the engine.