Is the 2015 Mazda CX-9 4WD fuel efficient?

Not particularly. The 2015 Mazda CX-9 4WD returns 19 combined MPG, which trails the average car in the Small Sport Utility Vehicle 4WD class for the same model year by about 17%.

What MPG does the 2015 Mazda CX-9 4WD get?

The EPA rates the 2015 Mazda CX-9 4WD at 19 combined MPG, 16 MPG in city driving, and 22 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is.

How much does it cost to fuel a 2015 Mazda CX-9 4WD per year?

The EPA estimates an annual fuel cost of $3,150 for the 2015 Mazda CX-9 4WD. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade.

What fuel does the 2015 Mazda CX-9 4WD use?

The EPA lists the 2015 Mazda CX-9 4WD as running on regular gasoline. Using a different grade than the manufacturer specifies can affect fuel economy and engine longevity.

Has the Mazda CX-9 4WD become more fuel efficient over time?

Yes. The first EPA-rated Mazda CX-9 4WD, the 2007 Mazda CX-9 4WD , returned 17 combined MPG. The most recent 2023 Mazda CX-9 4WD returns 23 MPG, an improvement of 6 MPG over the run.

How much CO₂ does the 2015 Mazda CX-9 4WD emit?

Tailpipe CO₂ emissions are 480 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 7,200 kilograms of CO₂.

What is the difference between the city and highway MPG of the 2015 Mazda CX-9 4WD?

City driving returns 16 MPG and highway driving returns 22 MPG, a gap of 6 MPG. A spread that wide is typical of cars with conventional automatic or manual transmissions, where stop-start city traffic eats more fuel than a steady highway cruise.

What engine is in the 2015 Mazda CX-9 4WD?

The 2015 Mazda CX-9 4WD has a 3.7-liter 6-cylinder engine.

What transmission and drivetrain does the 2015 Mazda CX-9 4WD have?

The 2015 Mazda CX-9 4WD comes with a automatic (s6) transmission and 4-wheel drive.

How does the 2015 Mazda CX-9 4WD compare to the best car in its class?

The most efficient car in the Small Sport Utility Vehicle 4WD class for the 2015 model year is the Lexus NX 300h AWD at 31 combined MPG. The Mazda CX-9 4WD returns 19 MPG, a gap of 12 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.

2015 Mazda CX-9 4WD MPG and Fuel Economy

This page collects every fuel-economy figure the EPA publishes for the 2015 Mazda CX-9 4WD. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.

Key takeaways

The most efficient car in the Small Sport Utility Vehicle 4WD class for the 2015 model year is the Lexus NX 300h AWD at 31 MPG.
The Mazda CX-9 4WD has gained 6 MPG since its first rated model year, the 2007 Mazda CX-9 4WD at 17 MPG.
EPA estimates this car costs around $5,000 more in fuel over five years than an average new vehicle of the same model year.

Fuel economy at a glance

These are the EPA's official ratings for the 2015 Mazda CX-9 4WD. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.

Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).

Combined MPG	19 MPG
City MPG	16 MPG
Highway MPG	22 MPG
Annual fuel cost	$3,150
Tailpipe CO₂	480 g/mi
Fuel type	Regular

How the 2015 Mazda CX-9 4WD compares

The 2015 Mazda CX-9 4WD returns 19 combined MPG. Cars in the Small Sport Utility Vehicle 4WD class for the same model year average 22.8 MPG, which puts this car behind the class average by about 17%.

The most efficient car in the Small Sport Utility Vehicle 4WD class for the 2015 model year is the Lexus NX 300h AWD at 31 MPG. The bar chart below puts the Mazda CX-9 4WD alongside the class best and the class average so you can see the full picture.

For broader context, the average new car of the 2015 model year (across all classes) returns 24.6 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2015 model year is on its own page.

2015 Mazda CX-9 4WD

19 MPG

Class average, 2015

22.8 MPG

Class best, 2015

31 MPG

Average new car, 2015

24.6 MPG

Annual fuel cost across driving patterns

The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for regular gasoline, which is $3.99/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.

The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 789.5 gallons (the car's annual consumption at the rated MPG).

Driving pattern	Estimated annual fuel cost
Light driver, 7,500 miles per year	$1,575
Average driver, 15,000 miles per year	$3,150
Heavy driver, 25,000 miles per year	$5,250

Year-over-year MPG for the Mazda CX-9 4WD

The EPA has rated the Mazda CX-9 4WD across 17 model years, from 2007 Mazda CX-9 4WD through 2023 Mazda CX-9 4WD. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.

The 2007 Mazda CX-9 4WD returned 17 MPG. The most recent 2023 Mazda CX-9 4WD returns 23 MPG. That is an improvement of 6 MPG over 16 model years, the kind of gain that usually comes from smaller engines, hybrid systems, or aerodynamic redesigns.

Year	Combined MPG	Open year page
2023	23 MPG	2023 Mazda CX-9 4WD
2022	23 MPG	2022 Mazda CX-9 4WD
2021	23 MPG	2021 Mazda CX-9 4WD
2020	23 MPG	2020 Mazda CX-9 4WD
2019	23 MPG	2019 Mazda CX-9 4WD
2018	23 MPG	2018 Mazda CX-9 4WD
2017	23 MPG	2017 Mazda CX-9 4WD
2016	23 MPG	2016 Mazda CX-9 4WD
2015	19 MPG	this page
2014	19 MPG	2014 Mazda CX-9 4WD
2013	19 MPG	2013 Mazda CX-9 4WD
2012	19 MPG	2012 Mazda CX-9 4WD
2011	19 MPG	2011 Mazda CX-9 4WD
2010	17 MPG	2010 Mazda CX-9 4WD
2009	17 MPG	2009 Mazda CX-9 4WD
2008	17 MPG	2008 Mazda CX-9 4WD
2007	17 MPG	2007 Mazda CX-9 4WD

Compare against other Small Sport Utility Vehicle 4WD for 2015

If you are cross-shopping the 2015 Mazda CX-9 4WD, the most useful comparison is against the other cars in the Small Sport Utility Vehicle 4WD class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.

The Lexus NX 300h AWD leads this group at 31 MPG, 12 MPG ahead of the 2015 Mazda CX-9 4WD.

2015 Lexus NX 300h AWD

31 MPG 2015 Subaru XV Crosstrek Hybrid AWD

31 MPG 2015 BMW X3 xDrive28d

30 MPG 2015 Subaru XV Crosstrek AWD

29 MPG 2015 Honda CR-V 4WD

28 MPG 2015 Lexus RX 450h AWD

28 MPG

2015 Mazda CX-9 4WD

19 MPG

Specifications

The 2015 Mazda CX-9 4WD runs a 3.7-liter 6-cylinder engine paired with a automatic (s6), sending power through 4-wheel drive.

Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.

Vehicle class: Small Sport Utility Vehicle 4WD
Engine: 3.7L 6-cylinder
Transmission: Automatic (S6)
Drivetrain: 4-Wheel Drive
Fuel type: Regular
Annual petroleum use: 15.7 barrels per year

Common questions about the 2015 Mazda CX-9 4WD

Quick answers to the questions people most often search for when looking up the 2015 Mazda CX-9 4WD.

Is the 2015 Mazda CX-9 4WD fuel efficient?

Not particularly. The 2015 Mazda CX-9 4WD returns 19 combined MPG, which trails the average car in the Small Sport Utility Vehicle 4WD class for the same model year by about 17%.
What MPG does the 2015 Mazda CX-9 4WD get?

The EPA rates the 2015 Mazda CX-9 4WD at 19 combined MPG, 16 MPG in city driving, and 22 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is.
How much does it cost to fuel a 2015 Mazda CX-9 4WD per year?

The EPA estimates an annual fuel cost of $3,150 for the 2015 Mazda CX-9 4WD. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade.
What fuel does the 2015 Mazda CX-9 4WD use?

The EPA lists the 2015 Mazda CX-9 4WD as running on regular gasoline. Using a different grade than the manufacturer specifies can affect fuel economy and engine longevity.
Has the Mazda CX-9 4WD become more fuel efficient over time?

Yes. The first EPA-rated Mazda CX-9 4WD, the 2007 Mazda CX-9 4WD, returned 17 combined MPG. The most recent 2023 Mazda CX-9 4WD returns 23 MPG, an improvement of 6 MPG over the run.
How much CO₂ does the 2015 Mazda CX-9 4WD emit?

Tailpipe CO₂ emissions are 480 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 7,200 kilograms of CO₂.
What is the difference between the city and highway MPG of the 2015 Mazda CX-9 4WD?

City driving returns 16 MPG and highway driving returns 22 MPG, a gap of 6 MPG. A spread that wide is typical of cars with conventional automatic or manual transmissions, where stop-start city traffic eats more fuel than a steady highway cruise.
What engine is in the 2015 Mazda CX-9 4WD?

The 2015 Mazda CX-9 4WD has a 3.7-liter 6-cylinder engine.
What transmission and drivetrain does the 2015 Mazda CX-9 4WD have?

The 2015 Mazda CX-9 4WD comes with a automatic (s6) transmission and 4-wheel drive.
How does the 2015 Mazda CX-9 4WD compare to the best car in its class?

The most efficient car in the Small Sport Utility Vehicle 4WD class for the 2015 model year is the Lexus NX 300h AWD at 31 combined MPG. The Mazda CX-9 4WD returns 19 MPG, a gap of 12 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.

Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.