MazdaCX92015Overview/mazda/cx9/2015/base/

2015 Mazda CX9

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2015 CX9.

Body SUVTransmission Automatic (S6)

The 2015 Mazda CX9 is a midsize SUV built on Mazda’s well‑regarded platform and powered by an automatic S6 transmission that delivers an EPA rating of 17 city/24 highway/19 combined miles per gallon. It requires 5.5 quarts of 5W‑20 engine oil, a specification that reflects Mazda’s emphasis on longevity and efficient power delivery. With only 35 total owner complaints and a relatively low recall count of two, this model year sits near the top of the CX9’s reliability history, underscoring its reputation for durable performance and dependable engineering.

Model year20202019201820172016201520142013

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity5.5 qtOEM · verified
Engine oil type5W-20OEM · verified
EPA fuel economy17/24/19 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 24F · 585 CCA battery, OE oil filter YF0914302A. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 24F · 585 CCAOEM · verified
Tail / brake / turnFUSEOEM · verified
Tire sizeP245/50R20OEM · verified
Wheel / rim7.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filterYF0914302A
Engine air filterCY0113Z40A
Spark plugZZJ118110
Battery000080124FWB
Front wiper bladesTD1267330 alt TD1167330
Serpentine beltCY0115907B alt CY0115908D
ThermostatZZJ115171B alt 9XB06807S
Cabin air filterL2Y661P11

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S6)

Ratings & economy EPA / vPIC

EPA city / highway / combined17 / 24 / 19 mpg
DrivetrainFront-Wheel Drive
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 5.5 qt of 5W-20 engine oil, API · 80W-90 in the differential, SAE J1703 brake fluid. Torque the oil drain plug to 20.0 ft-lbs. The firing order is 1-4-2-5-3-6. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity7.4
Brake FluidSAE J1703
Differential Gear OilAPI · 80W-90
Differential Gear Oil Capacity2.0-2.2
Engine CoolantFL22 type engine coolant
Engine Coolant Capacity12.8
Engine CoolantUse genuine Mazda FL-22 coolant/antifreeze

Engine torques

Engine Flywheel Bolts54-64 ft-lbs
Intake Manifold to Engine BoltsLower: 6.2-; Upper: 1st
Exhaust Manifold to Cylinder Head Bolts17
Engine Oil Pan Drain Plug20.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs96.0 inch lbs. ft-lbs

Chassis torques

Transfer Case Fill Plug13.0-17.0 ft-lbs
Front Wheel Hub174-202 ft-lbs
Rear Wheel Hub174-202 ft-lbs

Ignition

Cylinder Firing Order1-4-2-5-3-6
Curb Idle Speed (No Load)550-650 rpm
Curb Idle Speed (Secondary Under Load)570-745 rpm
Spark Plug ManufacturerMazda
Spark Plug Gap.050 - .057 in
Spark Plug Torque6-14 ft-lbs
Ignition Timing12, Not adjustable degrees

Battery & A/C

RefrigerantR134a
Refrigerant Capacity23.3-25.0 lbs
Oil TypeDENSO OIL 8
Oil Capacity5.4 oz
Standard BCI Group Number24F
Standard BCI Cranking Performance585 cca

Service checks

Fuel Pump Pressure Minimum54.4 psi
Fuel Pump Pressure Maximum65.2 psi
Injector Primary Resistance11.3-12.7 @ 68 degreesF ohms
Engine Compression1 psi
Engine Oil Pressure45-90 psi
Engine Oil Pressure RPM2000 rpm
Intake Valve Lash0.006-0.009 in
Exhaust Valve Lash0.011-0.015 in

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 61-; Rear: 16-; Front: 61-; Rear: 16-
Brake Caliper Carrier to Hub Bolt TorqueFront: 79-; Rear: 58-; Front: 79-; Rear: 58-
Minimum Pad ThicknessFront: 0.080; Rear: 0.080 in
Vented Rotor Minimum Thickness for ReplacementFront: 1.030; Rear: .630
Vented Rotor Minimum Thickness after RefinishFront: 1.060; Rear: .660
Variation from Parallelism Thickness Variation.0005
Maximum Rotor Runout.002
Maximum Drum DiameterParking brake 7.520

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
1103 ft. lbs., step 2: 360 degrees, step 3: 35-39 ft. lbs., 85-95103 ft. lbs
Cylinder Head — tightening sequence 5 stages

Prep Do not reuse old bolts. Coat bolt threads with clean engine oil.

1Bolts 1-1615 ft. lbs
2Bolts 1-1626 ft. lbs
3Bolts 1-1690 degrees
4Bolts 1-1690 degrees
5Bolts 1-1690 degrees

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 100,000 mi; coolant at 60,000 mi. The big-interval services (at 60,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 7,500 miBody Latches, Locks & Hinges (lubricate) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 15,000 miBrake Linings (inspect) · Brake Rotor (inspect)
At 22,500 miEngine Air Filter Element (clean)
Every 30,000 miBody Fasteners (torque) · Brake Line (inspect) · CV Joint Boot (inspect) · Cabin Air Filter (replace) · Fuel Line (inspect) · Steering Linkage (inspect)
Every 37,500 miEngine Air Filter Element (replace) · Engine Air Filter Element (clean)
Every 45,000 miExhaust System (Complete) (inspect) · Exhaust System Heat Shield (inspect)
At 60,000 miEngine Coolant System (drain, flush & refill)
Every 60,000 miFuel Evaporative Emission Control System Lines (inspect)
Every 100,000 miSpark Plugs (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Owner complaints about the 2015 Mazda CX9 dominate in one area — the engine, 11 of 35 reports (31%), well ahead of the next concern. None of this vehicle's 2 recall campaigns target the engine, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 1 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the engine pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

2
Open recalls
NHTSA campaigns
245
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
35
Owner complaints
1 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★
Frontal★★★★★
Side★★★★★
Rollover★★★★

Owner complaints filed with NHTSA, by component

All 35 complaints on record, top 8 components.

Engine11
Unknown Or Other5
Unknown Or Other,Engine2
Exterior Lighting2
Service Brakes2
Air Bags2
Power Train,Engine,Fuel/Propulsion System1
Engine & Engine Cooling1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

18V717000Air Bags:Frontal:Passenger Side:Inflator ModuleReported 12/10/2018

Mazda North American Operations (Mazda) is recalling certain 2014-2015 Mazda CX-9 vehicles sold, or ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina… Remedy: Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate inflator, free of charge. The recall began November 9, 2018. Owners may…

16V203000SteeringReported 11/04/2016

Mazda North American Operations (Mazda) is recalling certain model year 2016 CX-3 vehicles manufactured June 1, 2015, to December 2, 2015, 2013-2014 Mazda2 vehicles manufactured July 3, 2013, to August 8, 2014… Remedy: Mazda will notify owners, and dealers will inspect the lower mounting nuts and bolts that secure the front strut assembly to the steering knuckle. If the bolts are loose, they…

Technical service bulletins NHTSA · verified

Showing 5 of 245 bulletins on record with NHTSA.

BulletinDateComponentSummary
SA-041-262026-06-18Electrical SystemThis SA supersedes the previously issued SA(s) listed below. The changes are noted in…
SA-029-262026-04-21Power TrainThis Service Alert supersedes the previously issued SA listed below: The changes are…
SA-061-252025-12-17Electrical SystemIf you encounter any type of electrical concern (e.g, dead battery, engine no start…
07-004-25a2025-12-10Unknown Or OtherA musty/mildew type odor may come from the vents when the air conditioning (A/C) system…
SA-039/252025-08-21StructureSome vehicles may experience exterior trim heat damage such (melted, separating, etc.)…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific CX9. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2015 CX9 take?

5.5 qt of 5W-20 ILSAC multigrade engine oil, per the factory manual.

Does the 2015 CX9 have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the CX9 get?

EPA figures are 17 city / 24 highway / 19 combined mpg.