Mazda CX-9 Transmission Fluid Capacity

The Mazda CX-9 made its debut in 2007 and has since established itself as a robust player in the midsize SUV market. Offering a blend of style, space, and Mazda’s renowned driving dynamics, the CX-9 appeals to families who require utility but don’t want to sacrifice the pleasure of a spirited drive.

Key Takeaways:

  • 1st Gen: Total Capacity is between 7 to 7.4 quarts.
  • 2nd Gen (2016-Now): Total Capacity is about 8 quarts.
  • 1st Gen change interval: Every 30,000 to 60,000 miles depending on driving conditions.
  • 2nd Gen change interval: Every 60,000 miles for normal conditions; 30,000 miles for severe conditions.
  • Dealership cost: $200 to $300.
  • Independent Mechanic cost: $100 to $200.
2019 Mazda CX-9

With its various generations, the CX-9 has continually adapted to meet the needs of a changing market while upholding the quality that Mazda is known for.

One crucial aspect that often goes unnoticed in the routine maintenance of a vehicle like the CX-9 is the transmission fluid.

What is Transmission Fluid?

Transmission fluid plays a vital role in the health and efficiency of your Mazda CX-9’s transmission system. This slippery liquid serves multiple purposes:

  1. Lubrication: It lubricates the moving parts within the transmission to reduce friction and prevent overheating.
  2. Heat Dissipation: The fluid helps to disperse heat generated during the transmission operation, thus preventing damage due to overheating.
  3. Power Transfer: In automatic transmissions, the fluid acts as a hydraulic medium to facilitate gear shifts, enabling your vehicle to move smoothly.
  4. Enhanced Drive Quality: Good quality transmission fluid ensures that your ride is smooth and your gear transitions are seamless.

Ignoring your transmission fluid can lead to poor performance, decreased fuel efficiency, and, ultimately, a failing transmission system.

Especially for a vehicle as versatile and robust as the Mazda CX-9, maintaining optimal transmission fluid levels is critical for long road trips, daily commutes, and everything in between. Understanding what type of fluid to use and when to replace it can save you from costly repairs and untimely breakdowns.

2007-Now Mazda CX-9 Transmission Fluid Capacity And Transmission Fluid Type

Knowing the correct amount of transmission fluid that your Mazda CX-9 requires is essential for optimal performance and durability. Overfilling or underfilling can lead to mechanical issues or even transmission failure.

Here are the specific fluid capacities for each generation of the Mazda CX-9.

2007 – 2009 1st Gen (TB)

  • Total Capacity: 7.0 L (7.4 US qt, 6.2 Imp qt).
  • Fluit type: Mazda Genuine JWS3309.

2010 – 2012 1st Gen (TB) Facelift

  • Total Capacity: 6.6 L (7.0 US qt, 5.8 Imp qt).
  • Fluid type: Mazda Genuine JWS3309.

2013 – 2015 1st Gen (TB) Facelift 2

  • Total Capacity: 6.6 L (7.0 US qt, 5.8 Imp qt).
  • Fluid type: Mazda Genuine JWS3309.

2016 – Now 2nd Gen (TC)

  • Total Capacity: 8.0 L (8.5 US qt, 7.0 Imp qt).
  • Fluid type: Mazda Genuine ATF FZ.

A Few Notes:

  1. Drain and Fill: This is the amount you would typically replace during routine maintenance. A total fluid replacement would generally only occur during a transmission rebuild or replacement.
  2. Check Owner’s Manual: Always refer to your vehicle’s owner’s manual for the most accurate and specific information about transmission fluid capacity.

When to Replace Transmission Fluid

Timely replacement of your Mazda CX-9’s transmission fluid is essential for the longevity and optimal performance of your vehicle. While guidelines may vary slightly based on driving conditions and usage, here are some general milestones for when to consider changing your transmission fluid.

Mileage Intervals

  • 1st Gen (2007-2015): Every 30,000 to 60,000 miles, depending on driving conditions.
  • 2nd Gen (2016-Now): Every 60,000 miles for normal conditions, or every 30,000 miles for severe driving conditions.

Signs Your Fluid Needs Changing

Apart from mileage, there are certain signs that suggest it might be time to replace the transmission fluid.

  1. Slipping Gears: If your vehicle unexpectedly changes gears or has difficulty staying in gear.
  2. Delayed or Rough Shifting: Experiencing hard or delayed shifts, especially when the vehicle is cold.
  3. Noise: Unusual noises like grinding or clunking when the vehicle is in neutral.
  4. Fluid Color and Smell: Healthy transmission fluid is red and has a slightly sweet smell. If the fluid is brown or has a burnt smell, it needs to be replaced.
  5. Transmission Warning Lights: Always pay attention to warning lights on your dashboard.

A Note on Driving Conditions

  • Severe Conditions: If your CX-9 is frequently used for towing, or you drive in extremely hot or cold climates, consider replacing the fluid more often.
  • Normal Conditions: Daily commuting and long-distance travel without extreme temperature fluctuations fall under this category.

Consult Your Manual

As always, your owner’s manual will provide the most accurate advice tailored to your specific model and year, so be sure to consult it for guidance.

Regularly monitoring and replacing your transmission fluid will keep your Mazda CX-9 in peak condition, allowing you to enjoy the smooth, high-quality drive that you’ve come to expect from this remarkable SUV.

Cost of Changing Transmission Fluid

One of the many maintenance costs to consider when owning a Mazda CX-9 is the expense associated with changing the transmission fluid. The cost can vary depending on several factors such as location, labor rates, and whether you opt for a dealership or an independent mechanic.

At a Dealership

  • Average Cost: Typically, you can expect to pay anywhere from $200 to $300 for a full transmission fluid change at a dealership. This generally includes labor, new transmission fluid, and any applicable fees and taxes.
  • Advantages: A dealership will have specialized tools and OEM parts, along with mechanics who are trained specifically on Mazda vehicles. This ensures high-quality service and peace of mind.

At an Independent Mechanic

  • Average Cost: The cost at an independent mechanic can range from $100 to $200 for a complete service, depending on the mechanic’s rates and your location.
  • Advantages: An independent mechanic can offer a more personalized service at a lower price. However, make sure to choose a reputable mechanic to ensure quality.

Additional Costs to Consider

  1. Fluid Type: If your CX-9 requires a specific type of fluid that is more expensive, the overall cost will increase.
  2. Extra Services: Some places might recommend additional services such as a transmission flush, which could add to the cost.
  3. Geographical Variance: Costs can differ significantly depending on where you live. Urban areas tend to be more expensive due to higher labor costs.
  4. Coupons or Promotions: Keep an eye out for seasonal promotions or coupons, which could save you a significant amount.


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