Mazda CX-9 Ownership Cost Calculator 2026
Pre-filled with real Mazda CX-9 specs. Estimate your Mazda CX-9 5-year cost of ownership — depreciation, fuel, insurance, maintenance, loan, and residual value — then compare against same-class rivals side by side.
Year-by-Year Cost Breakdown — Mazda CX-9
| Year | Start Value | Depreciation | Fuel | Insurance | Maint. | Reg | Loan Pmt | Yr Out-of-Pkt | Cumulative | End Value |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | $42,000 | −$5,880 | $2,030 | $1,900 | $950 | $150 | $8,557 | $13,587 | $21,987 | $36,120 |
| 2 | $36,120 | −$4,620 | $2,030 | $1,900 | $950 | $150 | $8,557 | $13,587 | $35,574 | $31,500 |
| 3 | $31,500 | −$4,200 | $2,030 | $1,900 | $950 | $150 | $8,557 | $13,587 | $49,160 | $27,300 |
| 4 | $27,300 | −$3,360 | $2,030 | $1,900 | $950 | $150 | $8,557 | $13,587 | $62,747 | $23,940 |
| 5 | $23,940 | −$2,940 | $2,030 | $1,900 | $950 | $150 | $8,557 | $13,587 | $76,334 | $21,000 |
| 5-yr total | — | −$21,000 | $10,150 | $9,500 | $4,750 | $750 | $42,784 | $76,334 | — | $21,000 |
Combined 24 MPG (EPA). Depreciation uses a midsize-suv segment-average retention curve (editable). Figures are estimates for planning, not a quote.
Mazda CX-9 — Base Parameters
Powertrain
- Engine2.5L Turbo I4 (Skyactiv-G Turbo)
- DrivetrainAWD
- Fuelgas
- Market years2016-2024
EPA Efficiency
- City22 MPG
- Highway28 MPG
- Combined24 MPG
- Source year2021
Trims & MSRP
- Base (entry trim)$36,000
- Popular (mid trim)$42,000
- Top (fully loaded)$48,000
Same-Segment Cost Comparison
Every model below is modeled with identical assumptions (Popular trim, 20% down, 5-year loan at the national average new-car APR, 12,000 miles/year, national average tax & insurance). This apples-to-apples view is exclusive to VehCalc — manufacturer sites and KBB do not show it side by side.
| Model | Popular MSRP | 5-Yr Cost to Own | Avg / Year | Residual (5 yr) | Cost / Mile |
|---|---|---|---|---|---|
| Mazda CX-9 (this car) | $42,000 | $55,334 | $11,067 | $21,000 | $0.92 |
| Chevrolet Express 2500 | $42,000 | $56,257 | $11,251 | $21,000 | $0.94 |
| Honda Passport | $42,500 | $56,616 | $11,323 | $21,250 | $0.94 |
| Nissan Pathfinder | $42,500 | $56,135 | $11,227 | $21,250 | $0.94 |
| Mitsubishi Outlander PHEV | $42,500 | $54,913 | $10,983 | $21,250 | $0.92 |
Mazda CX-9 Reliability, Fault Codes & Maintenance Specs
Model-specific diagnostic data for the Mazda CX-9 (2016-2024 (2nd Gen TC), 2016-2024): known OBD-II trouble codes, symptom-to-fix mapping, model-year issues, and the factory maintenance specification sheet. Print it and hand it to your technician.
OBD-II fault codes
5 codes logged for this platform, with the cause most often seen on the 2.5L Turbo I4 (Skyactiv-G Turbo).
| Code | Description | Common cause here | Severity |
|---|---|---|---|
| P0234 | Turbocharger/Supercharger Overboost Condition | Wastegate actuator sticking, turbo control solenoid | High |
| P0011 | Camshaft Position A - Timing Over-Advanced (Bank 1) | Dirty VCT phaser / oil control valve | Medium |
| P0300 | Random/Multiple Cylinder Misfire | Carbon-fouled intake valves, worn spark plugs | High |
| P0299 | Turbocharger/Supercharger Underboost | Wastegate rattle, cracked charge pipe, degraded turbo | Medium |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) | Catalyst aging from rich turbo mixture | Low |
Symptoms, causes & fixes
What owners actually report, what it turns out to be, and what the repair involves.
| Symptom | Root cause | Fix | Model years |
|---|---|---|---|
| 2.5L Turbo cylinder head cracking | Cylinder head casting defect | Cylinder head replacement | 2018-2019 |
| Carbon buildup | GDI intake valve carbon | Walnut blast at 60k miles | 2016-2024 |
| Coolant loss from head crack | Cylinder head cracking | Cylinder head replacement. | 2016-2024 |
Model-year issues
Problems tied to a specific production window rather than the whole generation.
| Years | Issue | Fix | Status |
|---|---|---|---|
| 2018-2019 | 2.5T cylinder head cracking | Cylinder head replacement | Resolved in later build |
Common problems owners report
Recurring complaints for this model, summarized from owner-reported fault patterns.
- 2.5T cylinder head cracking
- GDI carbon buildup
- Coolant loss from head crack
- Transmission rough 2-1 downshift
Factory maintenance specification sheet
Spec-grade values for the Mazda CX-9. Verify against your owner's manual before service.
| Engine oil grade | 0W-20 |
| Oil capacity (with filter) | 4.8 qt |
| Oil change interval | 5,000 mi |
| Spark plug interval | 60,000 mi |
| Tire size | 255/60R18 |
| Tire pressure (cold) | 34 psi |
| Tire rotation interval | 5,000 mi |
| Air filter interval | 30,000 mi |
| Coolant service interval | 60,000 mi |
| Brake fluid interval | 30,000 mi |
| 12V battery group | Group H6 |
| Battery cold-cranking amps | 600 CCA |
Powertrain & drivetrain identity
Confirm your exact configuration before ordering parts or booking service.
| Engine / motor | 2.5L Turbo I4 (Skyactiv-G Turbo) |
| Drivetrain | AWD |
| Body style | SUV |
| Generation | 2016-2024 (2nd Gen TC) |
| Market years | 2016-2024 |
| Original MSRP range | $36,000-$48,000 |
| Market | US/CA |
Data sources & methodology
- OBD-II code definitionsSAE J2012 / ISO 15031-6 standardized powertrain diagnostic trouble codes, with platform-specific causes matched against the model in this dataset. Retrieved August 29, 2026.
- Fuel economy & MPGeU.S. Environmental Protection Agency fuel-economy data (fueleconomy.gov), model-year matched where available. Retrieved August 29, 2026.
- Maintenance specificationsFactory scheduled-maintenance intervals, fluid grades, tire sizes, and battery group sizes compiled per model. Retrieved August 29, 2026.
- Defects, recalls & technical service bulletinsNational Highway Traffic Safety Administration (NHTSA) defect and recall records. Retrieved August 29, 2026.
Methodology and citations are maintained by the VehCalc editorial team. Where an official schedule is not yet loaded, results are shown as model estimates and the source is stated as a reference.
Mazda CX-9 — Common Ownership Questions
What is the Mazda CX-9 5-year cost of ownership in 2026?
Based on a Popular-trim purchase at $42,000 with a 20% down payment, a 5-year loan at the national average new-car APR, 12,000 miles per year, and national average tax and insurance, the estimated 5-year cost of ownership is $55,334 — about $11,067 per year — with an estimated $21,000 residual value after 5 years. Use the calculator above to tailor it to your state, down payment, and mileage.
How much does a Mazda CX-9 depreciate each year?
The CX-9 sits in the midsize-suv segment. Applying a segment-average retention curve, it is estimated to keep roughly 86% of its value after the first year and 50% after five years. Depreciation is typically the single largest ownership cost, which is why our calculator shows it year by year alongside every other expense.
What is the Mazda CX-9 MSRP and which trims are available?
The CX-9 ranges from $36,000 (Base (entry trim)) to $48,000 (Top (fully loaded)). Trims shown: Base (entry trim) ($36,000); Popular (mid trim) ($42,000); Top (fully loaded) ($48,000). Select a trim in the calculator to recompute costs instantly.
What are the Mazda CX-9 real-world fuel costs?
EPA combined rating is 24 MPG (city 22 / highway 28). At the 2026 national average of $4.06/gal and 12,000 miles per year, fuel runs about $2,030 per year, or $10,150 over 5 years.
Does the Mazda CX-9 qualify for any tax credits?
The CX-9 is a gas vehicle, so federal EV credits do not apply. State-level incentives, if any, are listed on each state's page — select your state in the calculator to see local tax and fee impact.
How do Mazda CX-9 ownership costs compare with rivals?
See the side-by-side comparison table on this page. We model the CX-9 against Chevrolet Express 2500, Honda Passport, Nissan Pathfinder, Mitsubishi Outlander PHEV using identical assumptions — same annual miles, down payment, and loan terms — so the difference is truly apples-to-apples. That is data the manufacturer's site and KBB do not show side by side.
What are the most common Mazda CX-9 problems?
Owners of the Mazda CX-9 (2016-2024) most often report: 2.5T cylinder head cracking; GDI carbon buildup; Coolant loss from head crack; Transmission rough 2-1 downshift. Each is broken down with its root cause and the repair path in the reliability section above.
Which OBD-II codes does the Mazda CX-9 throw most often?
The codes logged most frequently for this platform are P0234 (Turbocharger/Supercharger Overboost Condition), P0011 (Camshaft Position A - Timing Over-Advanced (Bank 1)), P0300 (Random/Multiple Cylinder Misfire). The full list with the cause usually found on the 2.5L Turbo I4 (Skyactiv-G Turbo) and a low/medium/high severity rating is in the fault-code table above.
Why does my Mazda CX-9 2.5L Turbo cylinder head cracking?
On this model the usual cause is cylinder head casting defect. The typical repair is cylinder head replacement (reported on 2018-2019 cars). The symptoms table above lists every reported fault for this platform.
Are there model-year-specific Mazda CX-9 issues I should check before buying used?
Yes — 2018-2019 cars are associated with 2.5T cylinder head cracking. Recommended action: cylinder head replacement Later builds were corrected. The model-year table above lists all known production-window issues.
What are the Mazda CX-9 service intervals and fluid specs?
Factory spec is 0W-20 oil (4.8 qt) changed every 5,000 miles, 255/60R18 tires at 34 psi cold rotated every 5,000 miles, air filter every 30,000 miles, coolant every 60,000 miles, spark plugs every 60,000 miles, and a group H6 battery at 600 CCA. The full spec sheet is above and printable.