Mazda · Known Issues
1993 Mazda MX-5 Miata Problems: 10 Known Issues
1993 model year · 14,800+ owner reports · Updated September 2026
1993 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
1993 model year · 14,800+ owner reports · Updated September 2026
1993 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy
Visual coming soon
Your interest helps us choose what to build next.
Visual Known Issues · Coming soon
$4.99/month plus taxes at launch · No payment today
According to Au7o's analysis of 14,800+ owner reports, the 1993 Mazda MX-5 Miata has 10 documented known issues, with 4 rated critical. The most serious are Short Nose Crank Keyway Failure (NA 1.6L) ($50-$400 repair), Clutch Slave Cylinder Piston Seal Leak - Sudden Loss of Clutch Release ($60-$400 repair), Timing Belt and Water Pump Failure (NA 1.6L/1.8L) ($200-$600 repair) and Rocker panel and front frame-rail rust (rear of rockers / behind front wheels) ($500-$4,000 repair). The most commonly reported issue is Short Nose Crank Keyway Failure (NA 1.6L) with 6,000 owner reports. Across all issues with published estimates, repair costs range from $40 to $4,000. DIY maintenance guides at au7o.io.
Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.
According to Au7o's analysis of 14,800+ owner reports, the 1993 Mazda MX-5 Miata has 10 documented issues. The most frequently reported are: Short Nose Crank Keyway Failure (NA 1.6L), Clutch Slave Cylinder Piston Seal Leak - Sudden Loss of Clutch Release, Timing Belt and Water Pump Failure (NA 1.6L/1.8L). Of these, 4 are rated critical and should be addressed promptly.
The 1993 Mazda MX-5 Miata has 10 known issues documented across 14,800+ owner reports. 4 issues are rated critical: Short Nose Crank Keyway Failure (NA 1.6L) and Clutch Slave Cylinder Piston Seal Leak - Sudden Loss of Clutch Release and Timing Belt and Water Pump Failure (NA 1.6L/1.8L) and Rocker panel and front frame-rail rust (rear of rockers / behind front wheels). 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.
Repair costs for known Mazda MX-5 Miata issues range from $40 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Short Nose Crank Keyway Failure (NA 1.6L), typically costs $50-$400 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
Early NA Miatas (1990-1993) with the 1.6L B6ZE engine have a shorter crankshaft snout that is prone to keyway wallowing. The crankshaft pulley bolt loosens over time, causing the Woodruff key to shear and the pulley to spin freely on the crankshaft. This leads to loss of timing b… Repairs typically run $50-$400. Severity: high.
The externally mounted clutch slave cylinder on NA/NB/NC Miatas fails at the piston seal. Fluid weeps past the seal and collects behind the rubber boot, then the cylinder stops holding pressure and the pedal drops to the floor with no gear engagement - frequently without warning. Repairs typically run $60-$400. Severity: high.
Both the 1.6L B6 and 1.8L BP engines in the NA Miata are interference engines that require timing belt replacement every 60,000 miles. A broken timing belt causes pistons to strike valves, resulting in bent valves and potentially damaged pistons — often totaling the engine. The w… Repairs typically run $200-$600. Severity: high.
NA and NB Miatas are prone to structural rust in two well-known areas: the rear ends of the rocker panels (sills) and the front frame rails behind the front wheels. Road water enters through wheel-arch pinch welds and body seams and collects inside the double-layer sheet metal, r… Repairs typically run $500-$4,000. Severity: high.
Miata soft tops deteriorate over time from UV exposure, flexing during operation, and age. Vinyl tops develop cracks and tears, cloth tops fade and shrink. The rear plastic window (NA/NB) or glass window (NC/ND) can delaminate from the top material, causing water leaks and reduce… Repairs typically run $300-$1,500. Severity: medium.
All generations of Miata (NA through NC) are prone to rear main seal leaks as the engine ages. Oil seeps from the crankshaft rear seal, dripping onto the clutch housing and eventually contaminating the clutch disc. High mileage engines and infrequent oil changes accelerate seal d… Repairs typically run $400-$1,200. Severity: medium.
The NA's retractable headlights are driven by two independent retractor motors, each containing a limit-switch assembly of three spring contacts riding on printed traces plus a set of diodes under a white plastic cover. Grease dries and the contacts and traces wear, so one light… Repairs typically run $40-$400. Severity: medium.
Both the 1.6L B6 and 1.8L BP are belt-driven and Mazda specifies timing-belt replacement at 60,000 miles. On 25-35 year-old cars, belts frequently fail on age/dry-rot rather than mileage. The engines are non-interference, so a snapped belt will not bend valves, but it will strand… Repairs typically run $350-$900. Severity: medium.
The 1.6L B6 and 1.8L BP engines use hydraulic lash adjusters inside the bucket followers. Varnish and sludge from extended oil changes, or oil that is too thick or too thin, restrict flow into the adjuster so it cannot stay pumped up. The result is a persistent sewing-machine tic… Repairs typically run $60-$900. Severity: low.
NA and most early NB tops use a flexible plastic (vinyl) rear window, on many NA tops joined to the top with a zipper so the window can be lowered. With UV exposure and age the plastic yellows, hazes to near-opaque, and cracks (often starting at corners or the zipper seam); the z… Repairs typically run $100-$700. Severity: low.
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.