One problem related to catalytic convertor has been reported for the 2000 Infiniti I30. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Infiniti I30 based on all problems reported for the 2000 I30.
2000 infinity I30t : from forums on internet, it seems that there is a common problem with the exhaust system on this model. There is a code p0420 that indicates a problem with the bank 1 catalytic converter. Infinity states that because the catalytic converter is enclosed in a "front tube assembly", it is not covered under the 80,000 mile warranty. I have replaced the rear cat, O2 sensors, mass air sensor and engine coils. The p0420 code was also worked on before we owned the car at 29,000 miles.