Summary
The Mazda RX-7 has 10 recalls spanning the 1981-1995 production run, with the most serious affecting 1993 models where deteriorating fuel hoses can leak and the radiator cap releases coolant at too high a pressure, both of which can result in an engine compartment fire.
The 1993 model year carries the heaviest fire risk across two related issues. The fuel hoses degrade from residual heat after the engine is shut off, and once degraded, any removal and reinstallation makes leakage more likely, creating fire conditions under the hood. Separately on 1993 models, the radiator cap's pressure relief valve is calibrated too high, causing coolant to overheat and leak onto the top of the engine, where it can drip onto the exhaust manifold and ignite. These two 1993 fire-related concerns are distinct problems involving different components. The 1993 model also has a brake vacuum check valve that accumulates oil mist from the intake air over time, blocking the valve from opening properly and reducing power-assisted braking, particularly on the first few stops after the car has sat overnight.
On 1995 models, the same brake vacuum check valve issue appears, where oil mist buildup blocks the valve and reduces braking power.
The 1990 model year has a front automatic shoulder belt recall: the rail that guides the shoulder belt can wear down enough that the cable retracting the buckle assembly jams in place, leaving the shoulder belt unable to restrain the occupant in a crash.
On 1986 models, road salt can accumulate on the front brake caliper components, causing pad corrosion that prevents the disc pads from moving freely and lengthens stopping distances. The 1986 model year also has an evaporative emissions compliance issue involving a misrouted purge hose. Going back to the earliest production, 1981 models have an exhaust emissions compliance issue that surfaces at high altitudes.
