MazdaCX92019Overview/mazda/cx9/2019/base/

2019 Mazda CX9

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2019 CX9.

Body SUVTransmission Automatic (S6)

The 2019 Mazda CX‑9 is a midsize SUV that pairs its sleek, body‑on‑frame architecture with a six‑speed automatic (S6) transmission and a powertrain that requires 5.1 qt of 5W‑30 oil, delivering an EPA‑rated 22 mpg city, 28 mpg highway and 24 mpg combined fuel economy. Its engineering balances efficiency and practicality, while the modest oil capacity and viscosity reflect Mazda’s focus on streamlined maintenance. Reliability data for this model year shows 52 total owner complaints, with the engine identified as the most frequent issue and two recalls recorded, placing the 2019 CX‑9 in a middling reliability tier that researchers should consider when assessing long‑term durability.

Model year20202019201820172016201520142013

Quick specs

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

Engine oil capacity5.1 qtOEM · verified
Engine oil type5W-30OEM · verified
Lug nut torque80-108 ft-lbsOEM · verified
EPA fuel economy22/28/24 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 35 · 520 CCA battery, OE oil filter 1WPY14302. 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 35 · 520 CCAOEM · verified
Tire sizeP255/60R18 107HOEM · verified
Wheel / rim8 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter1WPY14302
Engine air filterPY8W133A0
Spark plugPY8V18110
Battery0000800035WB
Front wiper bladesTK4867330 alt TK7867330
Serpentine beltP30115908 alt PY0115909A
ThermostatP50215171
Cabin air filterTK4861J6X

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S6)

Ratings & economy EPA / vPIC

EPA city / highway / combined22 / 28 / 24 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 5.1 qt of 5W-30 engine oil, Dot 3 brake fluid. Torque lug nuts to 80-108 ft-lbs. The firing order is 1-3-4-2.

Lubricants & capacities

Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity8.5 qt
Brake FluidDot 3
Engine CoolantMazda FL-22 Coolant
Engine Coolant Capacity10.5 qt
Engine Oil5W-30
Engine Oil Capacity5.1 qt

Engine torques

Engine Flywheel Bolts80-85 ft-lbs
Engine Flywheel Bolts113-118 ft-lbs
Intake Manifold to Engine Bolts12
Exhaust Manifold to Cylinder Head Bolts32-47 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs15-19 ft-lbs

Chassis torques

Lug Nuts80-108 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Cylinder Firing Order1-3-4-2
Curb Idle Speed (No Load)Setting Speed: 700 rpm
Curb Idle Speed Variance (No Load)50 rpm
Curb Idle Speed Variance (Secondary Under Load)75 rpm
Spark Plug ManufacturerMazda
Spark Plug Gap.028-.031 in
Spark Plug Torque12-14 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.60 - 1.706 lbs
Oil GroupPAG
Oil Type46
Oil Capacity6.09 oz
Standard BCI Group Number35
Standard BCI Cranking Performance520 cca

Service checks

Fuel Pump Pressure Minimum79.1 psi
Fuel Pump Pressure Maximum100.0 psi
Regulated Fuel System Pressure (Without Vacuum)25.4
Regulated Fuel System Pressure (With Vacuum)25.4

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 62.0 -; Rear: 17.0 -
Brake Caliper Carrier to Hub Bolt Torque88.0 - 95.0 ft-lbs
ABS Sensor TorqueFront: 6.0; Rear: 6.0
Minimum Pad ThicknessFront: 0.079 in; Rear: 0.079 in
Vented Rotor Minimum Thickness for ReplacementFront: 1.024; Rear: .354
Vented Rotor Minimum Thickness after RefinishFront: 1.055; Rear: .386
Variation from Parallelism Thickness Variation.0006
Maximum Rotor RunoutFront: .002; Rear: .004

Multi-step torque procedures OEM · verified

Front Wheel Hub — tightening sequence 1 stages
1110.0 ft. lbs., Step 2: Back off 180 degrees, Step 3: 175.0-202.0110 ft. lbs
Rear Wheel Hub — tightening sequence 1 stages
1110.0 ft. lbs., Step 2: Back off 180 degrees, Step 3: 175.0-202.0110 ft. lbs
Camshaft Bearing/Carrier Cap Bolts or Studs — tightening sequence 1 stages
127-53 inch lbs., Step 2: 71-97 inch lbs.27–53 in
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
120-23 ft. lbs., Step 2: 80°-100°.20–23 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
167.0-81.0 ft. lbs., Step 2: 55 degrees-6567–81 ft. lbs
Cylinder Head — tightening sequence 1 stages
19.5-12.5 ft. lbs., Step 2: 24-26 ft. lbs., Step 3: Turn 85-95°, Step 4: Turn 85-95°.9.5–12.5 ft. lbs
Main Bearings — tightening sequence 1 stages

Prep Main Bolts: Step 1: 20-30 ft. lbs., Step 2: Loosen all bolts.

323-25 ft. lbs., Step 4: 58°-62°. Side Bolts: 15-1823–25 ft. lbs

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 40,000 mi; coolant at 120,000 mi. The big-interval services (at 120,000 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 5,000 miEngine Coolant System (inspect fluid level)
Every 7,500 miBrake Linings (inspect) · Brake Rotor (inspect) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 15,000 miBody Fasteners (torque) · Brake Line (inspect) · CV Joint Boot (inspect) · Cabin Air Filter (replace) · Fuel Line (inspect) · Steering Linkage (inspect)
Every 22,500 miAccessory Drive Belt (inspect) · Engine Air Filter Element (replace)
Every 30,000 miFuel Evaporative Emission Control System Lines (inspect)
Every 37,500 miExhaust System (Complete) (inspect) · Exhaust System Heat Shield (inspect)
Every 40,000 miSpark Plugs (replace)
At 120,000 miEngine Coolant System (drain, flush & refill)
At 180,000 miEngine Coolant System (drain, flush & refill)

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 2019 Mazda CX9 lead in one area — the engine, 15 of 52 reports (29%), 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
393
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
52
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 52 complaints on record, top 8 components.

Engine15
Unknown Or Other6
Electrical System4
Back Over Prevention3
Power Train,Engine2
Suspension2
Power Train2
Electrical System,Unknown Or Other2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

21V875000Fuel System, Gasoline:Delivery:Fuel PumpReported 12/11/2021

Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and… Remedy: Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Mazda customer service at 1-800-222-5500 Option 4…

19V770000Tires:Tread/BeltReported 28/10/2019

Mazda North American Operations (Mazda) is recalling certain 2019 CX-9 vehicles equipped with Sumitomo Falken ZIEX CT50 A/S tires, size P255/50R20 104V, having date code 1619. An incorrect rubber compound may have been… Remedy: Mazda will notify owners, and dealers will inspect all four tire serial numbers, replacing the tires as necessary, free of charge. The recall began December 4, 2019. Owners may…

Technical service bulletins NHTSA · verified

Showing 5 of 393 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…
01-008-262026-05-01Power TrainThis bulletin supersedes the previously issued bulletin(s) listed below. The changes are…
SA-031-262026-04-30StructureDESCRIPTION Some vehicles may require the replacement of a damaged VIN plate or vehicle…
SA-029-262026-04-21Power TrainThis Service Alert supersedes the previously issued SA listed below: The changes are…
SA-026-262026-04-16EngineThis Service Alert supersedes the previously issued M-Tip(s) listed below. The changes…

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 2019 CX9 take?

5.1 qt of 5W-30, per the factory manual.

Does the 2019 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 22 city / 28 highway / 24 combined mpg.