AI Damage2018 Mazda MX-5: common problems
Owners of the 2018 Mazda MX-5 filed 3 complaints with NHTSA, most often about electrical system and structure. The maker issued 212 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 3
- Technical service bulletins (TSB)
- 212
What fails most often
- 1 Electrical system 33% of all complaints
- 2 Structure 33% of all complaints
- 3 Powertrain 33% of all complaints
- 4 Engine 33% of all complaints
- 5 Vehicle speed control 33% of all complaints
- Electrical system: 1 complaints (33% of all); manufacturer bulletins for this component: 68.
- Structure: 1 complaints (33% of all); manufacturer bulletins for this component: 22.
- Powertrain: 1 complaints (33% of all); manufacturer bulletins for this component: 16.
- Engine: 1 complaints (33% of all); manufacturer bulletins for this component: 14.
- Vehicle speed control: 1 complaints (33% of all); manufacturer bulletins for this component: 1.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 2 L · petrol · 4 cyl
- automatic, 6-speed
- manual, 6-speednamed in 1 complaints
Drive: RWD
Symptoms owners describe
How many of the 3 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 1 | 0 | 68 |
| Structure | 1 | 0 | 22 |
| Powertrain | 1 | 0 | 16 |
| Engine | 1 | 0 | 14 |
| Vehicle speed control | 1 | 0 | 1 |
| Equipment | 0 | 0 | 71 |
| Engine and cooling | 0 | 0 | 15 |
| Service brakes | 0 | 0 | 10 |
| Wheels | 0 | 0 | 10 |
| Visibility | 0 | 0 | 8 |
| Fuel/propulsion system | 0 | 0 | 6 |
| Steering | 0 | 0 | 6 |
| Suspension | 0 | 0 | 6 |
| Seats | 0 | 0 | 5 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
2018 Mazda Miata MX-5 Club Sport, manual transmission Heading home from a friends house that evening, transmission started whirring/whining in 6th gear, then 5th, and so on through 2nd - 1st gear seems to be unaffected.
At first I hadn't noticed, but when going in and out of 'drive' the vehicle felt like it was either going to stall or accelerate. I had initially thought was because it's a 'sports car.' in august of 2020 the window regulator on the passenger side had malfunctioned.
Now it developed to some ticking noise every time car accelerate or decelerate. The car is only at about 9700 mi went to spreen mazda loma linda ca to inspect the car. They said it is normal and come back when it gets worse
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 1,806 of 2,102 model years in the NHTSA data (among the 14% least complained about).
On average one model year of the MX-5 has 8 complaints (11 years in the data). This year has 3, below average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...),…
If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been…
- Some vehicles may exhibit scratches (1) on the rear of the seat back bar garnish (2) from contact with the…
Some vehicles may exhibit scratches (1) on the rear of the seat back bar garnish (2) from contact with the convertible top (3). Due to assembly variations, the clearance between the seat back bar garnish and the…
- Some vehicles may require the replacement of a damaged VIN plate or vehicle certification label
To obtain a replacement VIN plate (bulkhead-mounted and visible through the lower-left area of the windshield), contact DAG (Dealer Assistance Group) using VIN Plate Request Form available on One Mazda. To obtain a…
- Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems
Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not…
- If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake…
If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the intake manifold is not cleaned properly…
- Some customers may complain that the front passenger seat belt warning light flashes and the seat belt…
Some customers may complain that the front passenger seat belt warning light flashes and the seat belt warning beep is activated, even though there is no occupant in the front passenger seat. When a passenger seat…
- Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt…
Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt auto tensioner. This may be caused by insufficient sealing at the drive belt auto tensioner damper when the auto…
- There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very…
There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small coolant leak from the bleed hole. This Service Alert is to inform you about the water pump sealing mechanism…
- There are currently 2 methods for cutting a new auxiliary key blank
A. Auxiliary Key Trace Cut Method • B. Auxiliary Key Code Cut Method 2019 and newer models require a 10-digit key code to accurately cut keys • 5-digit codes CANNOT be provided for 2019 and newer vehicles (the…
- Some customers may report an odor or water in the HVAC system and upon inspection, the cabin air filter…
Some customers may report an odor or water in the HVAC system and upon inspection, the cabin air filter may be found to be wet.
- Some vehicles may exhibit the power window(s) not working properly (window does not move or has fallen…
Some vehicles may exhibit the power window(s) not working properly (window does not move or has fallen into the door) and/or making an abnormal noise while operating the power window switch. This may be caused by the…
- If the right-side Blind Spot Monitoring (BSM) control module is replaced for any reason, it is also…
If the right-side Blind Spot Monitoring (BSM) control module is replaced for any reason, it is also necessary to replace the left-side BSM control module in order to complete the radar aiming procedure. If the…
NHTSA lists 212 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2018 Mazda MX-5?
Owner complaints to NHTSA most often mention: electrical system, structure, powertrain. Total complaints: 3. The most frequent symptoms in complaint texts: knocking, grinding or other noise (67%), stalls while driving (33%), windows, sunroof (33%).
How many service bulletins (TSB) were issued for the 2018 Mazda MX-5?
NHTSA lists 212 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2018 Mazda MX-5 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2018 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.