2003 Infiniti G35 Engine Problems

Source: NHTSA · Updated Sep 10, 2026 · 62 complaints analyzed

Owners have filed 62 complaints with NHTSA about engine problems on the 2003 Infiniti G35, 12% of all complaints for this model year. Half of the reports with a mileage happened before 131,000 miles. The words owners use most often: “engine cooling” (39% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Engine cooling: mentioned in 24 of 62 complaints (39%)
  • Position sensor: mentioned in 21 of 62 complaints (34%)
  • Stalled without: mentioned in 8 of 62 complaints (13%)
  • Vdc off: mentioned in 5 of 62 complaints (8%)

At what mileage do engine problems happen?

Based on 54 complaints that reported the odometer reading.

Under 10k miles0 · 0%
10k–25k miles1 · 2%
25k–50k miles1 · 2%
50k–75k miles5 · 9%
75k–100k miles11 · 20%
100k–150k miles21 · 39%
150k+ miles15 · 28%

How serious are the reports?

Of 62 complaints, 1 a fire.

Infiniti G35 engine complaints by model year

Peak: 2003, with 62 complaints
2003: 622003622004: 432004432005: 382005382006: 142006142007: 102007102008: 10200810

n = 177 complaints · Source: NHTSA

Model yearEngine complaintsShare of that yearMedian miles
2008 G351011%103,000
2007 G35109%110,000
2006 G351410%72,930
2005 G353818%103,328
2004 G354318%106,500
2003 G356212%131,000

When owners reported it

Peak: 2014, with 13 complaints
2012: 9201292013: 8201382014: 132014132015: 7201572016: 112016112017: 4201742018: 1201812019: 4201942020: 2202022022: 1202212023: 1202312025: 120251

n = 62 complaints · Source: NHTSA

Related recalls (1)

Engine and engine coolingNov 17, 2003 · NHTSA campaign 03V455000 · 630,000 vehicles

Problem: On certain passenger vehicles, the circuit board for the crank position sensor or cam position sensor may have an improper solder joint due to solder deformation caused by heat stress accelerated by the existence of flux residue during the soldering process.

Risk: This could cause the "service engine soon" warning light to come on, create a no start condition, cause reduced engine power, or cause the engine to stop running without warning during vehicle operation, which could result in a crash.

Fix: Dealers will replace the crank position sensors. Camshaft position sensor(s), and in some cases, the variable timing control sensor(s). Vehicles involved in a previous recall campaign, 01v357, are also included in this new campaign. The replacement sensors used in that campaign are also affected. Owner notification began on december 22, 2003. Owners should contact nissan at 1-800-647-7261 or infiniti at 1-800-662-6200.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

my g35 dies randomly i tried to have nissan in garden city kansas to fix they said they dont work on recalls not safe to drive 3 hours to Wichita kansas im not sure what todo

Received Aug 21, 2025 · NHTSA complaint 11682283

The car engine cuts off / stalls while driving. This has happened multiple times. When driving on highway, the engine stops running, the car loses all power, and it is very difficult to restart the car. I had the car inspected and the local mechanic stated the crankshaft sensor/ camshaft censor is…

Received Aug 18, 2023 · NHTSA complaint 11539419

Twice while driving approximately 70 mph on the freeway, the engine shut off without warning and the service engine soon warning indicator illuminated. The vehicle coasted. There was no shoulder to pull over to. I put it in neutral and it restarted. The vehicle was taken to an independent mechanic…

Received Oct 13, 2022 · NHTSA complaint 11489067

Frequently asked questions

Do all 2003 Infiniti G35s have engine problems?

No. NHTSA has 62 owner complaints about engine for the 2003 Infiniti G35 (12% of the 533 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the 2003 Infiniti G35 engine?

Yes: 1 safety recall list engine. Check your VIN on NHTSA.gov to see whether the fix was done on your car.

At what mileage do engine problems start?

The median reported mileage is 131,000 miles: half of the reports with a mileage came before that.

What do owners say about engine problems on the 2003 Infiniti G35?

The most frequent phrase is “engine cooling”, in 24 of 62 complaints, followed by “position sensor” (21).

Other 2003 Infiniti G35 problems

See all 2003 Infiniti G35 problems or engine problems across all G35 years.