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Mazda · Known Issues

1992 Mazda RX-7 Problems: 1 Known Issue

1992 model year · 280+ owner reports · Updated September 2026

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1992 · All trims · All engines

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Issue summary

According to Au7o's analysis of 280+ owner reports, the 1992 Mazda RX-7 has 1 documented issue, with 1 rated critical. The most serious is Overheating and Coolant System Weakness ($300-$800 repair). The most commonly reported issue is Overheating and Coolant System Weakness with 280 owner reports. Across all issues with published estimates, repair costs range from $300 to $800. DIY maintenance guides at au7o.io.

In This Article

  • RX-7 Cooling1
  • Recalls5
  • FAQ
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In This Article

  • Cooling1
  • Recalls5
  • FAQ

All 1 Known Issue

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ALL YEARS20022001200019991998199719961995199419931992199119901989198819871986
Community reported
280 owners

On the 1990-1995 Mazda RX-7 13B-REW, rotary engines generate extreme heat and the cooling system is barely adequate, especially on turbo models. Radiator, thermostat, and water pump failures cause rapid overheating that quickly damages apex seals.

Common Symptoms

  • Temperature gauge climbing
  • Coolant boilover
  • Steam from engine bay
  • Temperature spikes in traffic
  • Fan not engaging

How to Fix

Upgrade to aluminum radiator. Replace thermostat and water pump proactively. Monitor coolant temperature closely. Never drive with high temps — rotary engines suffer immediate seal damage.

Owner tips & cautions

  • TipUpgrade to a Koyo or Mishimoto aluminum radiator — the OEM radiator is marginal for cooling needs
Typical repair cost:$300 - $800

Research This Issue

Based on 280 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Low Confidence280 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
NHTSA Recalls5 recalls

LATCHES/LOCKS/LINKAGES:HOOD:LATCH

EQUIPMENT DESCRIPTION: MAZDA SPEED RESINOUS HOODS, DESIGNED AND SOLD AS ACCESSORY PARTS FOR MODEL YEAR 1992-1995 RX7 VEHICLES, MANUFACTURED BETWEEN JUNE 1, 1997, THROUGH SEPTEMBER 19, 2000.

Campaign #00E06900006/11/2000

ENGINE AND ENGINE COOLING:COOLING SYSTEM

THE RADIATOR CAP PRESSURE RELIEF VALVE RELEASE PRESSURE IS SET TOO HIGH. THIS CAN CAUSE THE COOLANT TO REACH TEMPERATURES THAT EXCEED THE THERMAL DESIGN LIMITS OF SOME COMPONENTS OF THE COOLANT SYSTEM. SHOULD THIS OCCUR, ENGINE COOLANT CAN LEAK COLLECT ON TOP OF THE ENGINE.

Campaign #94V09400011/05/1994

FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

RESIDUAL ENGINE HEAT CAN CAUSE PREMATURE DETERIORATION OF THE FUEL HOSE CAUSING THE HOSE TO LEAK. ALSO, REMOVING AND REINSTALLING THE DETERIORATED FUEL HOSES INCREASES THE LIKELIHOOD OF A LEAK.

Campaign #95V06900030/03/1995
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Frequently Asked Questions

What are the most common Mazda RX-7 problems?

According to Au7o's analysis of 280+ owner reports, the 1992 Mazda RX-7 has 1 documented issue. The documented issue is: Overheating and Coolant System Weakness. Of these, 1 is rated critical and should be addressed promptly.

Is the Mazda RX-7 reliable?

The 1992 Mazda RX-7 has 1 known issue documented across 280+ owner reports. 1 issue is rated critical: Overheating and Coolant System Weakness. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Mazda RX-7 problems?

Repair costs for known Mazda RX-7 issues range from $300 to $800, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Overheating and Coolant System Weakness, typically costs $300-$800 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 1990-1995 Mazda RX-7 Overheating and Coolant System Weakness?

Rotary engines generate extreme heat and the cooling system is barely adequate, especially on turbo models. Radiator, thermostat, and water pump failures cause rapid overheating that quickly damages apex seals. Repairs typically run $300-$800. Severity: high.

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 280+ owner reports, NHTSA recalls, TSBs, and automotive forums.

SEAT BELTS:FRONT:WEBBING

THE RAIL OF THE AUTOMATIC SHOULDER BELT CAN WEAR SUFFICIENTLY SUCH THAT THE CABLE WHICH RETRACTS THE BUCKLE ASSEMBLY WILL BECOME JAMMED IN THE RAIL RENDERING THE SHOULDER BELT INOPERATIVE.

Campaign #96V17300016/09/1996

SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM:HOSES, LINES/PIPING, AND FITTINGS

OIL MIST CONTAINED IN THE ENGINE INTAKE AIR CAN COLLECT OVER TIME IN THE BRAKE VACUUM CHECK VALVE PREVENTING THE CHECK VALVE FROM OPENING AT THE SPECIFIED PRESSURE REDUCING POWER ASSIST TO THE BRAKES.

Campaign #96V14900002/08/1996

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