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Reliability report · 2023 Mazda CX-9 · Updated July 2026 · ~$2,700/yr fuel · what it costs to keep →

The quiet final year — the engine drama is behind it, and the file is small and scattered.

The 2023 is the final second-generation CX-9 (Mazda replaced it with the CX-90 for 2024). Its file is small and diffuse — no cracked-head coolant leak, no oil-consumption cluster. The scattered recent notes include a hard/low brake pedal one owner chased through multiple dealer visits, an electric-power-steering (EPS) failure with a failed u-joint shaft and bearing (owner cites TSBs 06-001/20 and 06-001/24, with a roughly $2,000 EPS replacement), a spontaneous sunroof shatter, and the familiar i-ACTIVSENSE driver-aid faults.

One manufacturer program touches 2023: SSPC8, a Special Service Program (not a safety recall) for a remote-tuner module whose outdated software can let the 12-volt battery drain if the car sits unused — a fix worth confirming was done, but not a defect to fear. This is a Calm, buy-on-condition year. One caution: our automated 2023 recall check did not return cleanly — do a direct VIN recall lookup before buying.

Evidence: 12 NHTSA complaints · 0 recall campaigns · 7 mechanic & forum sources

Canary status

Calm

What that means: 12 federal complaints — one of the smallest files in the range — and no confirmed safety recall for 2023 as of this check. The last year of the second-generation CX-9 before the CX-90 replaced it. No cracked-head or oil-consumption cluster; the recent notes are scattered (brake feel, an electric-power-steering failure, sunroof shatter, driver-aid faults). A settled send-off that rewards a normal careful inspection.

CalmChirpingSquawkingFainted

12

Federal complaints

0

Confirmed recalls

Known issues

Ranked by the cost of ignoring them. Every claim carries its source.

Electric power steering (EPS) and brake-feel one-offs

moderate

The two mechanical notes that stand out in a small file. One owner reported an electric-power-steering fault — a 'thud' from the wheel traced first to a failed u-joint shaft, then to a failed bearing in the EPS unit requiring full replacement (they cite TSBs 06-001/20 and 06-001/24 and an EPS replacement quoted over $2,000, partly covered as goodwill). Separately, another owner chased a hard/low brake pedal through four dealer visits with parts replaced and no clean fix. Neither is a recall or a documented fleet-wide pattern at this volume, but on a test drive pay attention to steering feel/noise and brake-pedal firmness, and pull codes for any stored steering or brake faults.

Sources: NHTSA complaint database, 2023 Mazda CX-9 · NHTSA manufacturer communications (SSPC8 program; owner-cited TSBs 06-001/20, 06-001/24)

Remote-tuner battery drain (SSPC8 — a program, not a recall)minor

Mazda ran SSPC8, a Special Service Program (a manufacturer fix campaign, not a safety recall) covering certain 2023 CX-9s (and other models) whose remote-tuner module shipped with outdated software; if the car sits unused for a while, the 12-volt battery can discharge. The fix is a software update. It's worth confirming SSPC8 was performed, especially on a car that has sat, but it is a convenience/no-start nuisance, not a safety defect.

Sources: NHTSA manufacturer communications (SSPC8 program; owner-cited TSBs 06-001/20, 06-001/24)

Driver-aid faults and sunroof shatterminor

The familiar low-frequency items carry into the final year: i-ACTIVSENSE Smart Brake Support / forward-collision false activations and, occasionally, a stored malfunction affecting acceleration; plus a spontaneous sunroof shatter (a burst with no impact) that appears across several CX-9 years and is usually not covered as glass. Test the driver aids on the drive and inspect the sunroof/glass.

Sources: NHTSA complaint database, 2023 Mazda CX-9

The 2023 is the send-off year: a tiny complaint file, no big engine pattern, and the reliable end of the second-generation CX-9.
7 mechanic & owner sources

Safety recalls

A verified zero — not an unchecked one. Here’s what that means.

No NHTSA safety recalls — verified July 11, 2026

Checked against NHTSA’s recall database on July 11, 2026. Any manufacturer Special Coverage programs for this year are listed under the issues above, not here.

What it costs to keep

The purchase price is what you negotiate. These are the numbers you live with afterward — each one sourced, none of them blended into a fake total.

The ownership picture — 2023 CX-9

One sourced number. No fake total.

Fuel

23 MPG combined (20 city / 26 highway) for the 4WD, 2.5L turbo on the EPA federal fuel-economy test.

Source: FuelEconomy.gov (EPA) — EPA’s federal fuel-economy test, recomputed with current gas prices. EPA record 45956 (CX-9 4WD).

$2,700/yr

at $4.15/gal · 15,000 mi/yr · 55/45 city/hwy · pulled Jul 12, 2026

Why there’s no single “cost to own” number: sites that promise one are guessing at your insurance quote, your annual miles, and your luck. These are the numbers we can actually source — and each one carries its receipt.

Shopping this year?

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The VIN is on the listing. We’ll check this exact car — build, open recalls, and whether the “completed” repairs stayed fixed.

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Before you buy

Print this
  1. 01On the drive, check steering feel and any 'thud'/knock from the wheel (an EPS/u-joint issue one owner hit) and brake-pedal firmness.
  2. 02Confirm the SSPC8 remote-tuner software update was performed — especially if the car has sat unused (it's a battery-drain fix, not a recall).
  3. 03Test the automatic Smart Brake Support and adaptive cruise for false activation, and inspect the sunroof/glass.
  4. 04Do a normal engine check (coolant and oil) — the cracked-head and oil-consumption patterns are behind this year.
  5. 05IMPORTANT: our automated 2023 recall check returned an empty (stale-blank) response — re-run the VIN on NHTSA's own recall lookup before purchase to confirm no open campaign.
  6. 06This is a buy-on-condition year: a clean, serviced example needs no special defect-dodging.

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