28 MPG combined won’t win any hypermiling competitions, but it’s acceptable for the 2021 Mazda 3 4-Door with all-wheel drive and the 2.5L engine. This isn’t a car bought by those solely chasing economy figures. It’s a choice driven by a desire for a more engaging driving experience, a well-designed interior, and the security of all-wheel drive in climates where it’s a genuine asset. This Mazda 3 is for the enthusiast who also needs a practical and reliable daily driver, and they’re willing to trade a few MPGs for that added confidence behind the wheel.

City and highway performance

The EPA estimates for the 2021 Mazda 3 4-Door 4WD 2.5L are 25 MPG in the city and 33 MPG on the highway. The city figure accurately reflects the demands placed on the 2.5L engine when navigating stop-and-go traffic.

The six-speed automatic transmission, while smooth and responsive, is geared for performance as much as efficiency, meaning it may hold lower gears longer than a continuously variable transmission (CVT) found in some competitors. The highway number is more impressive, showcasing the engine’s ability to cruise efficiently at higher speeds. The strong torque output of the 2.5L also means less downshifting is required when encountering inclines, contributing to better fuel conservation on long road trips.

Annual fuel cost

The EPA estimates that the annual fuel cost for this particular configuration of the 2021 Mazda 3 is $1,550. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, using national average fuel prices. Your actual fuel costs may vary depending on your driving habits, the specific conditions in your area, and fluctuations in fuel prices. This $1,550 figure provides a useful benchmark for comparing the running costs of this Mazda 3 against other vehicles.

Real-world expectations

While the EPA estimates provide a standardized measure, real-world fuel economy can differ. Owners often report figures that fluctuate slightly above or below the official numbers depending on their driving style and conditions. Aggressive acceleration, frequent hard braking, and extended idling can all negatively impact fuel consumption.

A conscientious driver who anticipates traffic flow and practices smooth acceleration can often achieve figures closer to, or even slightly exceeding, the EPA estimates. Factors such as tire pressure, vehicle maintenance, and the type of terrain you typically drive on will all have an influence on your MPG.

How it compares

Compared to other compact sedans with optional all-wheel drive, the 2021 Mazda 3 4-Door 4WD’s fuel economy is competitive, but not class-leading. The Subaru Impreza sedan, a direct competitor with standard all-wheel drive, achieves a slightly better 31 MPG combined. The Mazda 3 offers a more powerful engine and a more premium driving experience than the Impreza.

The Toyota Corolla, in its front-wheel-drive configuration, can achieve upwards of 34 MPG combined, but lacks the all-weather capability and engaging handling of the Mazda. Someone prioritizing fuel efficiency above all else might opt for the Nissan Versa, estimated at 35 MPG combined. The Versa does not offer all-wheel drive or the upscale interior found in the Mazda 3. The Mazda 3 buyer is willing to accept a small compromise in fuel economy for the added benefits it offers.

To see all Mazda fuel economy data, and how the 3 MPG across all years compares, review our extensive database.

Tips to maximize efficiency

Take advantage of the Mazda 3’s “Sport” mode sparingly. It enhances throttle response and makes the driving experience more engaging, and it also consumes more fuel. Reserve its use for situations where you need the extra performance, like merging onto a busy highway or tackling a twisty road. Keep the car in “Normal” mode for everyday driving to optimize fuel efficiency.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which forces the engine to work harder and burn more fuel. Check your tire pressure regularly, ideally every few weeks, and inflate them to the recommended pressure listed on the driver’s side door jamb. Even a slight adjustment can make a noticeable difference in fuel economy.

Avoid unnecessary idling. If you anticipate a wait of more than a minute or two, such as at a long traffic light or while waiting to pick someone up, turn off the engine. Modern engines are designed to restart quickly and efficiently, and restarting the engine consumes less fuel than letting it idle for an extended period.

Be mindful of your driving habits. Aggressive acceleration and hard braking are major contributors to poor fuel economy. Practice smooth, progressive acceleration and anticipate traffic flow to avoid unnecessary braking. Driving more smoothly will not only save fuel but also improve the overall driving experience.