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Mazda · Known Issues

1990 Mazda MX-6 Problems: 3 Known Issues

1990 model year · 220+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 220+ owner reports, the 1990 Mazda MX-6 has 3 documented known issues. None of the listed issues is rated critical; this is not a complete reliability assessment. The most commonly reported issue is Clutch Slave Cylinder Failure (Manual) with 120 owner reports. Across all issues with published estimates, repair costs range from $100 to $3,000. DIY maintenance guides at au7o.io.

In This Article

  • MX-6 Drivetrain2
  • MX-6 Body/Panels1
  • Recalls7
  • FAQ
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In This Article

  • Drivetrain2
  • Body/Panels1
  • Recalls7
  • FAQ

All 3 Known Issues

Filter:
ALL YEARS1997199619951994199319921991199019891988
Community reported
120 owners

On the 1990-1997 Mazda MX-6, clutch slave cylinder leaks hydraulic fluid causing soft or no clutch pedal. Internal seal deteriorates. Can strand vehicle if complete failure.

Common Symptoms

  • Clutch pedal goes to floor
  • Soft clutch pedal
  • Difficulty shifting
  • Fluid leak near transmission
  • Clutch does not fully disengage

How to Fix

Replace clutch slave cylinder. Bleed hydraulic system. Consider replacing clutch master cylinder at same time. Use DOT 3 or 4 brake fluid.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • GJ22-41-920 clutch slave cylinder
    OEMGJ22-41-920 / JoeTLC GJ2241920

    Slave-cylinder replacement for the 1990-1992 first-generation branch after leakage/loss of travel is confirmed Fitment/availability: The inspected direct product page lists SKU GJ2241920 as a new clutch slave cylinder for 1988-1992 Mazda…

    JoeTLC
  • Dorman CS360018 clutch slave cylinder
    OEMDorman CS360018

    Slave-cylinder replacement for the 1993-1997 second-generation branch after leakage/loss of travel is confirmed Fitment/availability: The inspected direct page identifies Dorman CS360018, a 0.75-inch external slave cylinder, for 1993-199…

    PartCatalog

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Owner tips & cautions

  • TipReplace master and slave cylinder together — if one leaks the other is likely near failure
Typical repair cost:$100 - $350

Research This Issue

Based on 120 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Low Confidence120 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
Community reported
100 owners

On the 1990-1997 Mazda MX-6, transmission mount breaks causing excessive drivetrain movement, shifting issues, and vibration. Broken mount can also damage shift linkage cables.

Common Symptoms

  • Excessive vibration at idle
  • Hard shifting
  • Clunk when shifting to Drive or Reverse
  • Vibration under acceleration
  • Shift cable feels loose

How to Fix

Replace transmission mount. Inspect engine mounts at same time — they often fail together.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Anchor 9082 center-lower manual transmission mount
    OEMAnchor 9082 / PartsGeek 8552-05270441

    Center-lower manual-transmission mount after separation/collapse is confirmed Fitment/availability: The inspected/indexed direct page lists Anchor 9082 for 1993-1997 Mazda MX6 with either 2.0L I4 or 2.5L V6 and manual transmission, posit…

    PartsGeek
  • Genuine Mazda GA2G-39-070C left automatic transmission mount
    OEMMazda GA2G-39-070C

    Left-side automatic-transmission mount for the 1993-1997 2.5L V6 branch after failure is confirmed Fitment/availability: The inspected direct OEM page identifies GA2G-39-070C, replacing GA2G-39-070B, for 1993-1997 626/MX-6 2.5L six-cylin…

    Real Mazda Parts

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Owner tips & cautions

  • TipReplace all mounts as a set if one has failed — the others are likely near failure too
Typical repair cost:$100 - $350

Research This Issue

Based on 100 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Low Confidence100 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 1988-1997 Mazda MX-6, both MX-6 generations rust in predictable places: the lip and top of the rear wheel wells where a right-angle seam traps salty road grime, the seams where the quarter panels meet the trunk floor behind the rear wheels, the rocker panels, and the rear strut towers. The 1988-1992 GT is described by owners as having 'terminal' rust in these areas in salt-belt regions, and the 1993-1997 car repeats the rear-wheel-well and quarter-seam pattern. Trunk seal leaks add water from inside. Because quarter-panel replacement requires removing the quarter glass, tail lights and rear windshield, structural rust here is usually the end of the car's life economically.

Common Symptoms

  • Bubbling paint on the rear wheel arch lips
  • Rust holes at the quarter-panel/trunk seam behind the rear wheels
  • Soft or perforated rocker panels
  • Rust on the rear strut towers under the trunk trim
  • Water in the trunk

How to Fix

Inspect the rear wheel-well lips, rear quarter/trunk seams, rockers and rear strut towers before buying; clean out trapped dirt and treat early surface rust with rust converter and cavity wax. Rust-through requires cutting and welding patch panels or full quarter panels (body-shop work, often $1,000+ per side); rocker replacement is also a cut-and-weld job. No recall.

Typical repair cost:$200 - $3,000

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium ConfidenceVerifiedReviewed Sep 2026
NHTSA Recalls7 recalls

ELECTRICAL SYSTEM:IGNITION:SWITCH

Mazda North American Operations (Mazda) is recalling certain model year 1989-1998 MPV, 1990-1995 323, 1990-1998 Protege, 1992-1993 MX-3, 1993-1995 929, 1993-1997 MX-6, and 1993-1998 626 vehicles. In the affected vehicles, grease applied to the contact points inside the ignition switch may become conductive and overheat.

Campaign #15V67400019/10/2015

FUEL SYSTEM, GASOLINE

CERTAIN SPX FILTRAN FUEL FILTERS WITH A 45-DEGREE ANGLE INLET TUBE, MODEL 800F350-S1, SOLD AS REPLACEMENT FILTERS FOR 1993-1997 FORD PROBE,1993-2001 MAZDA 626 AND MX-6, AND 1983-1994 LOYAL, 3-DOOR COUPE, HATCHBACK, SEDAN, WAGON, BRAT, DL, GL, GL-10, RX, XT, AND XT6 PASSENGER VEHICLES WITH EFI OR TURBO ENGINES. THESE FILTERS ARE PACKAGED AS WIX, NAPA, AND CARQUEST BRAND FUEL FILTERS. CERTAIN SPX FILTRAN FUEL FILTERS WITH A 90-DEGREE ANGLE INLET TUBE, MODEL 800F300-S2, SOLD AS REPLACEMENT FILTERS FOR 19983-1994 SUBARU VEHICLES WITH EFI OR TURBO ENGINES. THESE FILTERS ARE PACKAGED AS WIX, NAPA, AND CARQUEST BRAND FUEL FILTERS. FUEL MAY LEAK FROM THE FILTER DUE TO NON-CONFORMING BRAZING WELDS WHERE THE INLET TUBE IS CONNECTED TO THE FILTER CAN.

Campaign #05E06500005/10/2005

AIR BAGS:FRONTAL:SENSOR/CONTROL MODULE-INACTIVE

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Frequently Asked Questions

What are the most common Mazda MX-6 problems?

According to Au7o's analysis of 220+ owner reports, the 1990 Mazda MX-6 has 3 documented issues. The most frequently reported are: Clutch Slave Cylinder Failure (Manual), Transmission Mount Failure, Rear Wheel Well, Quarter-Panel Seam and Rocker Panel Rust-Through. None are rated critical, but regular maintenance is recommended.

Is the Mazda MX-6 reliable?

The 1990 Mazda MX-6 has 3 known issues documented across 220+ owner reports. None of the matching records is rated critical; this is not a complete reliability assessment. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Mazda MX-6 problems?

Repair costs for known Mazda MX-6 issues range from $100 to $3,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 1990-1997 Mazda MX-6 Clutch Slave Cylinder Failure (Manual)?

Clutch slave cylinder leaks hydraulic fluid causing soft or no clutch pedal. Internal seal deteriorates. Can strand vehicle if complete failure. Repairs typically run $100-$350. Severity: medium.

What is the 1990-1997 Mazda MX-6 Transmission Mount Failure?

Transmission mount breaks causing excessive drivetrain movement, shifting issues, and vibration. Broken mount can also damage shift linkage cables. Repairs typically run $100-$350. Severity: medium.

What is the 1988-1997 Mazda MX-6 Rear Wheel Well, Quarter-Panel Seam and Rocker Panel Rust-Through?

Both MX-6 generations rust in predictable places: the lip and top of the rear wheel wells where a right-angle seam traps salty road grime, the seams where the quarter panels meet the trunk floor behind the rear wheels, the rocker panels, and the rear strut towers. The 1988-1992 G… Repairs typically run $200-$3,000. Severity: medium.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 220+ owner reports, NHTSA recalls, TSBs, and automotive forums.

VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH THE SAS SENSOR UNIT. THESE VEHICLES CAN EXPERIENCE AIR BAG DEPLOYMENTS IN MINOR UNDERCARRIAGE IMPACTS.

Campaign #98V24900008/10/1998

EXTERIOR LIGHTING:HEADLIGHTS:SWITCH

VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE HEADLIGHT WIRE THAT RUNS THROUGH THE TURN SIGNAL LEVER CAN FAIL AT THE POINT WHERE IT IS SOLDERED TO THE HEADLIGHT SWITCH.

Campaign #99V35800017/12/1999

ENGINE AND ENGINE COOLING:ENGINE

VEHICLE DESCRIPTION: PASSENGER VEHICLES. AN EXTERNAL SPRING IN THE TIMING BELT TENSIONER CAN BREAK AND GET CAUGHT IN THE TIMING BELT.

Campaign #98V20600108/09/1998

+ 2 more recalls. Check all on NHTSA.gov

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