Infiniti G35 Engine and Engine Cooling Problems

Source: NHTSA · Updated Sep 10, 2026 · 143 complaints analyzed

Owners have filed 143 complaints with NHTSA about engine and engine cooling problems on the Infiniti G35 across 6 model years. The 2003 model year has the most (67). The words owners use most often: “oil consumption” (18% of reports).

What owners describe

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

  • Oil consumption: mentioned in 26 of 143 complaints (18%)
  • Position sensor: mentioned in 24 of 143 complaints (17%)
  • Included engine engine: mentioned in 16 of 143 complaints (11%)
  • Cam shaft: mentioned in 13 of 143 complaints (9%)

How much does it cost to fix?

Owners who wrote down what they paid or were quoted put the typical engine and engine cooling repair on the Infiniti G35 at $770, and half of them between $490 and $1,050.

Based on 8 NHTSA complaints about this problem alone that state a repair bill or quote (2005–2011), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.

At what mileage do engine and engine cooling problems happen?

Based on 130 complaints that reported the odometer reading.

Under 10k miles23 · 18%
10k–25k miles10 · 8%
25k–50k miles14 · 11%
50k–75k miles16 · 12%
75k–100k miles30 · 23%
100k–150k miles29 · 22%
150k+ miles8 · 6%

How serious are the reports?

Of 143 complaints, 1 mention a crash, 3 a fire.

Infiniti G35 engine and engine cooling complaints by model year

Peak: 2003, with 67 complaints
2003: 672003672004: 212004212005: 212005212006: 212006212007: 9200792008: 420084

n = 143 complaints · Source: NHTSA

Model yearEngine and Engine Cooling complaintsShare of that yearMedian miles
2008 G3544%2,201
2007 G3598%23,000
2006 G352114%11,400
2005 G352110%51,000
2004 G35219%49,100
2003 G356713%98,000

When owners reported it

Peak: 2010, with 27 complaints
2005: 4200542006: 2200622007: 222007222008: 242008242009: 112009112010: 272010272011: 262011262012: 9201292013: 6201362014: 102014102015: 220152

n = 143 complaints · Source: NHTSA

Related recalls (1)

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

Model years: 2003

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.

Tl* the contact owns a 2006 infiniti g35. While traveling approximately 30 mph, the vehicle suddenly stalled and the service engine warning lamp, slip warning lamp, and vdc off warning lamp illuminated. The contact was able to pull the vehicle over, turn off, and restart the vehicle. The vehicle…

Received Jun 23, 2015 · NHTSA complaint 10726807

Check engine light came and mechanic cannot figure out why. *tr

Received Jan 21, 2015 · NHTSA complaint 10678174

Tl* the contact owns a 2005 infiniti g35. The contact stated that while driving at 65 mph, the vehicle stalled and all the lights on the dashboard illuminated. The vehicle was restarted. The contact diagnosed that the cam position sensor needed to be replaced. The vehicle was not repaired. The vin…

Received Dec 22, 2014 · NHTSA complaint 10667577

Tl* the contact owns a 2007 infiniti g35. The contact stated that while driving at approximately 40 mph, the engine stalled without warning. The vehicle was able to restart after multiple attempts. The vehicle was taken to the dealer, who recommended reprogramming the ecm and the tcm system. The…

Received Nov 3, 2014 · NHTSA complaint 10652227

Not sure this is something you would pursue but i have not been able to get satisfaction from lake norman infiniti locally or their national customer service support desk. I have a 2006 infiniti coupe with 24k miles on it. I had an issue with what was determined to be the cooling fans for that car…

Received Oct 10, 2014 · NHTSA complaint 10643920

Frequently asked questions

Do all Infiniti G35s have engine and engine cooling problems?

No. NHTSA has 143 owner complaints about engine and engine cooling for the Infiniti G35. Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the Infiniti G35 engine and engine cooling?

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

How much does it cost to fix engine and engine cooling problems on the Infiniti G35?

Owners report a typical cost of $770 (half paid between $490 and $1,050), from 8 complaints that state a repair bill or quote, in 2026 dollars.

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

The most frequent phrase is “oil consumption”, in 26 of 143 complaints, followed by “position sensor” (24).

Other Infiniti G35 problems

See all Infiniti G35 problems.