NHTSA — Engine And Engine Cooling: Exhaust System: Emission Control: Catalytic Convertor Problems

6.0

fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
13,333 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

1999 Mazda MX-5 Miata exhaust system problems

exhaust system problem

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1999 Mazda MX-5 Miata Owner Comments

problem #3

Jun 152006

MX-5 Miata 4-cyl

  • Manual transmission
  • 40,000 miles

A D V E R T I S E M E N T S

Check engine light came on indicating catalytic converter failure. My vehicle has 40K miles and has been well taken care of. After investigation, many 99-00 miata's have ignition coil failures which causes unburnt fuel to contaminate the catalytic converter and associated O2 sensors. This situation was resolved and is not a problem on post 2000 miata's, and therefore should be covered by a recall by the manufacturer, since it is a known problem.

- Indianapolis, IN, USA

problem #2

Apr 012005

(reported on)

MX-5 Miata

  • miles
1999 Mazda miata had problem with ignition coils. The sensors indicated that there was a problem with the catalytic converter as well. Consumer is referencing complaint 10093484.

- Matthews, NC, USA

problem #1

Jan 122004

MX-5 Miata 4-cyl

  • Manual transmission
  • miles
1999-2000 miatas have an established intermittent ignition coil failure problem per several owners forums. The ignition coil fails which causes a misfire condition, this results in unburned fuel reaching the catalytic converter where it burns and overheats the converter. This overheating can destroy the converter and potentially destroy the oxygen sensors. This exact scenario happened to me on the indicated date. My vehicle has less than 37K miles on it but is out of warranty and now I must replace the coil and converter. I believe this situation warrants a recall.

- Harvest, AL, USA

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