Mazda · 2017
3 4-Door 2.5L 4-cyl
✓ EPA Verified
Regular Gasoline
Compact Cars
Front-Wheel Drive
City
27
MPG
Combined
30
MPG
Highway
36
MPG
Annual Fuel Cost
$1,450
Based on 15,000 miles/year · EPA estimates
vs avg gas vehicle
$700
saved per year
Class Comparison — Compact Cars
Top 36%
Better than 64 out of 100 vehicles in its class for fuel efficiency.
This vehicle: 30 MPG
This vehicle
30 MPG
Class average
33 MPG
Class lowest
12 MPG
EPA Energy & Environment Scores
7
Energy Score
Out of 10
7
GHG Score
Out of 10
293 lbs
Annual CO₂
g/mile tailpipe CO₂
No
Start-Stop
Not equipped
Vehicle Specifications
Engine2.5L 4-cyl
TransmissionAutomatic (S6)
DriveFront-Wheel Drive
Fuel TypeRegular Gasoline
Vehicle ClassCompact Cars
Engine DescSIDI
Start-StopNo
EPA Vehicle ID38313

Offering respectable fuel economy and an engaging driving experience, the 2017 Mazda 3 4-Door 2.5L gets 30 MPG combined. This sporty compact sedan doesn’t penalize you excessively at the pump, it is not a hybrid chasing maximum efficiency.

City and highway performance

The EPA estimates the 2017 Mazda 3 2.5L gets 27 MPG in the city and 36 MPG on the highway. These figures reflect the car’s behavior in different driving environments.

Mazda’s engineering prioritizes efficiency alongside performance, which helps the 27 MPG city rating. The engine’s responsiveness and the automatic transmission’s intelligent programming allow for brisk acceleration without over-revving, contributing to reasonable fuel consumption in stop-and-go traffic. Achievable during steady-state cruising, the 36 MPG highway rating happens when the automatic transmission slips into its highest gear to minimize engine RPM, thus boosting efficiency. For those looking to compare against other years, check out 3 MPG across all years.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Mazda 3 2.5L is $1,450. This calculation uses 15,000 miles per year and national average fuel prices. Your actual fuel costs may vary depending on your driving habits, the type of fuel you use, and the prevailing gas prices in your area.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy often differs. Some drivers report achieving figures close to the EPA estimates, and some exceed the highway MPG in ideal conditions. Aggressive driving, heavy acceleration, frequent short trips, and carrying extra weight will negatively impact fuel efficiency. Owners who prioritize fuel economy may see slightly better numbers than the combined rating, while those who frequently exploit the engine’s performance will likely see lower figures.

How it compares

The 2017 Mazda 3 2.5L competes in a crowded segment. The Honda Civic EX-T with its 1.5L turbo engine offers similar performance, with MPG figures around 32 MPG combined. The Toyota Corolla, while not as sporty, achieves around 32 MPG combined. Thanks to its smaller turbocharged engine and focus on efficiency, the Hyundai Elantra Eco offers around 35 MPG combined. The Mazda 3’s blend of driving pleasure and reasonable fuel economy distinguishes it from these competitors. Drivers who appreciate a responsive engine and sharp handling will choose it, not just because of low gas prices.

Tips to maximize efficiency

Anticipate traffic flow and avoid unnecessary hard acceleration. The 2.5L engine is responsive, but quick launches and frequent bursts of speed will drastically reduce your MPG. Gentle acceleration and maintaining a steady speed are key to efficient driving, especially in city environments.

Ensure your tires are properly inflated to the recommended pressure listed on the driver’s side doorjamb. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly, especially during temperature changes.

Reduce unnecessary weight in the vehicle by removing any items from the trunk or backseat that aren’t essential. Extra weight directly impacts fuel economy, and every pound counts, especially when navigating stop-and-go traffic.

Avoid extended idling. If you’re stopped for more than a minute, turn off the engine. Modern engines are designed to restart quickly and efficiently, and idling consumes fuel without contributing to forward motion.

Use cruise control on the highway when appropriate. Cruise control helps maintain a constant speed, minimizing variations in throttle input and maximizing fuel efficiency, particularly over long distances. It’s one of the easier methods to improve fuel mileage. You can view the full lineup on this site which also shows all Mazda fuel economy data.