Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2003 Infiniti G35 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2003 Infiniti. The contact stated that while driving at various speeds with the accelerator pedal was depressed, the transmission lever shifted inadvertently into neutral(N) for several few seconds and then remained in drive(D). The contact stated that the check engine, automatic transmission, and ABS warning lights were illuminated. Additionally, the contact stated that there was a constant gasoline odor present inside and outside of the vehicle. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the crankshaft sensor and the camshaft position sensor needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was 98,515.
While driving, the vehicle turned off on 2 occasions. On several occasions, it lost power, and then recovered, but twice, it literally turned completely off. The "slip", "vdc off", and "service engine soon" lights all appeared. I took it to my local Infiniti dealer who said it was subject to a recall for earlier-produced models, and subject to a bulletin which described exactly what had happened. The crank position sensor and bank 1 and 2 of the cam position sensors had to be replaced at a cost of $563.03, and Infiniti says that without NHTSA telling them to pay for it, they refuse. This car is a 2003, however, it is in mint condition with less than 55,000 original miles on it--always dealer maintained.
Tl* the contact owns a 2003 Infiniti G35. While driving at 60 MPH, the vehicle stalled and the transmission service indicator illuminated on the instrument panel. The vehicle was not able to be restarted. The vehicle was taken to an independent mechanic. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 87,000.
I had pulled up to drive thru window at the bank and put my car in park, with the engine running, when I finished my transaction I tried to put my car in drive but the gear shifter wouldn't move. I finally shut my car off and waited a few seconds and started it again and the shifter worked. It has also happened to me when I have started my car and tried to put it in reverse. It is intermittent. I also have an air bag sensor light flashing and hope they will include my VIN # in the recall but they haven't so far. Even in the expanded recall. I don't know why. When does our safety become important? My stereo/cd player also stopped working and I had to replace that. What good does all of these repetitive complaints do if the auto companies aren't made to repair all of them?
Tl contact owns a 2003 Infiniti G35 sedan. The contact stated that the transmission failed at 45,000 miles. In addition, the brakes failed on the vehicle and were replaced several times. When the vehicle was started, it would jolt and jerk on its own. The dealer stated that the transmission was slipping and needed to be replaced. He assumed that the repairs could be made under the extended powertrain warranty; however, the manufacturer stated that the warranty did not include the fly wheel or the clutch component of the transmission. The failure mileage was less than 45,000 and current mileage was 69,800.
Well I bought this car from bellflower auto mart thinking that I bought a pretty dependable car come to find out the previous owner was drinking and driving and totaled the car, so now the car should have a salvage title but it doesnt the airbag system in the car does not work at all, the dealer bought the wrecked car from auction and repaired it themselves and sold it to me as if it was never in any accident, I asked for the carfax report but it unfortunately slipped my mind after all the paper work, but I went the next day to return the car after I found all this out and was kicked off the property.
1.vibration upon acceleration, car can not run 40 miles/hour without severe continuous vibration. 2. Car can not run properly upon acceleration nor be driven safely 3. Immediately brought car to dealer, car purchased new and all scheduled service performed at said dealer. Current mileage <100K .
1.vibration upon acceleration, car can not run 40 miles/hour without severe continuous vibration. 2. Car can not run properly upon acceleration nor be driven safely 3. Immediately brought car to dealer, car purchased new and all scheduled service performed at said dealer. Current mileage <100K .
The transmission in my 2003 G35 Infiniti failed after only 76,000 miles. I contacted Infiniti and was denied any assistance. I had the repairs completed for $4,000 plus after negotiating with the dealership. I am very disappointed in such a major equipment failure after on a luxury car.
Tl* the contact owns a 2003 Infiniti G35. While driving 65 MPH, the vehicle stalled without warning. The dealer stated that the crank shaft position sensor needed to be replaced. The vehicle was repaired and the manufacturer was notified. The failure mileage was 61,000.
Transmission complaints in other G35 years
Frequently asked questions
How common are transmission problems on the 2003 Infiniti G35?
NHTSA has 22 complaints about the transmission & drivetrain of the 2003 Infiniti G35, 4% of the model year's 533 complaints. The component named most often is automatic transmission (14 mentions).
Is there a recall for 2003 Infiniti G35 transmission problems?
No. NHTSA lists no transmission & drivetrain recall for the 2003 Infiniti G35, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2003 Infiniti G35 transmission problems start?
Half of the complaints with a recorded mileage happened before about 76,000 miles, and 15% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.