Mazda · 2015
6 2.5L 4-cyl
✓ EPA Verified
Regular Gasoline
Midsize Cars
Front-Wheel Drive
City
26
MPG
Combined
30
MPG
Highway
37
MPG
Annual Fuel Cost
$1,450
Based on 15,000 miles/year · EPA estimates
vs avg gas vehicle
$700
saved per year
Class Comparison — Midsize Cars
Top 39%
Better than 61 out of 100 vehicles in its class for fuel efficiency.
This vehicle: 30 MPG
This vehicle
30 MPG
Class average
35 MPG
Class lowest
13 MPG
EPA Energy & Environment Scores
7
Energy Score
Out of 10
7
GHG Score
Out of 10
298 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 ClassMidsize Cars
Engine DescSIDI
Start-StopNo
EPA Vehicle ID34646

30 MPG combined is impressive for the 2015 Mazda 6 2.5L 4-cylinder. It’s a mid-size sedan that focuses on the driver without losing good fuel economy. It’s not a hybrid claiming Prius-like numbers, but a traditionally powered, fun-to-drive sedan that gets economy many competitors can’t match, proving efficiency and driving pleasure can go together.

City and highway performance

The EPA numbers are 26 MPG in the city and 37 MPG on the highway. The city figure is respectable. This reflects the engine’s readily available torque and the automatic transmission’s smooth operation, which minimizes hard acceleration. The highway figure is where the Mazda 6 shines because of its aerodynamic design and relatively low curb weight, allowing it to cruise efficiently at higher speeds. Owners who often travel long distances will benefit most from the impressive highway fuel economy, making the Mazda 6 a comfortable and economical choice for road trips without losing driving enjoyment.

Annual fuel cost

The EPA says the estimated annual fuel cost for the 2015 Mazda 6 2.5L is $1,450. This is based on driving 15,000 miles per year and using national average fuel prices. Individual fuel costs will vary based on driving habits and local gas prices, but this is a good benchmark to compare it to other vehicles. This relatively low annual fuel cost is a key selling point for many Mazda 6 buyers, who often want a practical and affordable daily driver that still looks good and handles well.

Real-world expectations

EPA estimates are a useful starting point, but real-world fuel economy always varies. Owners of the 2015 Mazda 6 2.5L often report numbers close to the official ones, but hard driving, stop-and-go traffic, and tire pressure can all make a difference. Weather conditions like extreme heat or cold can also affect fuel efficiency. Most drivers can expect combined fuel economy in the high 20s to low 30s, showing the balance between performance and efficiency Mazda put into this vehicle. For those looking for more specific data, resources exist to research 6 MPG across all years.

How it compares

The 2015 Mazda 6 2.5L competes in a crowded mid-size sedan group. Rivals include the Toyota Camry, Honda Accord, and Ford Fusion. The Toyota Camry LE, known for its reliability, gets a slightly lower 28 MPG combined. The Honda Accord LX matches the Mazda 6’s 30 MPG combined but some drivers find the Mazda more fun to drive. The Ford Fusion 1.5L EcoBoost manages 29 MPG combined. The Mazda 6 offers sporty handling and fuel efficiency to drivers who want a good driving experience and good economy. To compare the Mazda 6 to others, all Mazda fuel economy data is available.

Tips to maximize efficiency

Keeping tires properly inflated is critical for getting the best fuel economy in any vehicle, including the 2015 Mazda 6. Check your tire pressure often and inflate the tires to the pressure on the doorjamb sticker. Underinflated tires increase rolling resistance, which lowers fuel efficiency.

Avoid hard driving like fast acceleration and hard braking. These waste fuel and put stress on the engine and drivetrain. Smooth acceleration and gentle braking will improve your fuel economy a lot. The Mazda 6’s responsive engine might make you want to push it, but a steady approach gets the best results.

Minimize idling. If you’re stopped for more than a few seconds, turn off the engine. Modern engines restart quickly, and idling wastes fuel and increases emissions, especially in cities. Avoid long warm-up periods in cold weather. The engine will warm up faster while driving.

Regular maintenance is important for good fuel economy. Keep your engine tuned, change the oil and air filter as recommended, and keep up with all other maintenance. A well-maintained engine runs more efficiently and delivers better fuel economy. Using the right motor oil as the owner’s manual says is also important.

Plan your trips to avoid traffic jams if you can. Stop-and-go traffic uses much more fuel than steady driving. Use navigation apps to find traffic and plan other routes. The Mazda 6’s comfortable ride makes it a good road-trip car, but avoid traffic to maximize fuel efficiency.