Infiniti
I30
Infiniti
J30
Infiniti I30 vs Infiniti J30: 1998 Comparison
The short answer
Based on available data, the Infiniti I30 comes out ahead of the Infiniti J30 on power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
I30
Overall
Overwhelmingly positive sentiment regarding long-term reliability and durability, particularly for the VQ30DE engine and automatic transmission. The vehicle is consistently praised as a high-mileage workhorse, with multiple reports of reaching 250,000 to 300,000 miles with basic maintenance. Owners describe it as a tremendous value, offering luxury features and comfort derived from the Nissan Maxima platform at a lower cost.
Best version to buy
Insufficient owner data available to specify a preferred trim or model year. Feedback is generalized across the 1996-2001 generation, with no specific trim (e.g., base, Touring) highlighted as superior.
Known issues
- ⚠Ignition coil failure: Coils reported to fail around 120,000-140,000 miles, causing misfires (codes P0300, P0305). Frequency: very frequent.
- ⚠Crankshaft/Camshaft Position Sensor failure: Causes intermittent stalling, no-start conditions, and diagnostic trouble codes (P0335). Frequency: recurrent.
- ⚠Idle Air Control Valve (IACV) failure: Leads to rough idle, stalling, and high idle issues (code P0505). Frequency: recurrent.
J30
Overall
Sentiment is mixed and primarily based on nostalgic ownership experiences and historical perspective. The vehicle is remembered fondly by some former owners for its unique styling, fun-to-drive nature, and the feeling of luxury it provided in its era. It is powered by the naturally aspirated VG30DE engine shared with the 300ZX, which is noted for its performance.
Best version to buy
Insufficient owner data available to declare a consensus "best" version. The J30t trim is mentioned, which included Super-HICAS four-wheel steering, but no specific praise or recommendation for it over the base model is provided in the discussions.
Known issues
- ⚠Intermittent crank/no-start & rough idle: Often related to fuel delivery problems after sitting, potentially due to old gas, a failing fuel pump, clogged fuel filter, or varnished injectors.
- ⚠Aging component failures: Leaking valve cover gaskets, failing window motor regulators, failing fan clutches leading to poor A/C performance, and problematic blend door actuators causing HVAC airflow issues. Frequency: recurrent.
- ⚠Belt squeal: Persistent squeal from the accessory drive belt (AC/Water Pump belt), often on cold starts, potentially related to a worn idler pulley. Frequency: isolated.
The verdict
The Infiniti I30 is the better choice for most buyers.
It has stronger reliability sentiment in owner reports than the Infiniti J30, based on the data above. If the specific known issues on the Infiniti I30 are a dealbreaker, the Infiniti J30 is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Infiniti I30 or the Infiniti J30?
Owner reports lean more positive on reliability for the Infiniti I30 than the Infiniti J30. See the known issues comparison above for the specific concerns owners report on each.
Which is better for families, the Infiniti I30 or the Infiniti J30?
Data on family-specific factors like cargo space is limited for one or both models, but based on available reports, both are positioned as practical daily drivers. Check the specs table above for seating and body type.
Which has better fuel economy, the Infiniti I30 or the Infiniti J30?
Fuel consumption data is limited for one or both models. Check the specs table above for the figures available on each catalogued version.
Which is cheaper to maintain, the Infiniti I30 or the Infiniti J30?
Exact maintenance costs aren't in our data, but reliability signals above are the closest proxy: fewer reported issues generally means lower repair costs over time.