Which parts fail
Components named in complaints (service brakes, ABS, rotors and pads, parking brake).
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).
Tl* the contact owns a 2003 Infiniti G35. The contact stated while the vehicle was parked, the emergency brake released and the vehicle rolled away until crashing into another vehicle. There were no injuries. The vehicle was not taken to the dealer. The manufacturer was not contacted but the vehicle was not repaired. The failure mileage was 124,000 and the current mileage was 125,000.
At 11,784 miles (after 16 months of ownership) I took my car to my local shop for its fourth oil change and tire rotation. My mechanic informed me that the front brakes and rotors on my 2003 Infiniti G35 sedan were very close to being worn out. I drove to the local infinti dealer (Infiniti of willow grove, pa) that same day and arranged for a service appointment. The following Friday I dropped off my car, and was later informed by the service writer that yes, the front rotors were worn beyond specification and that the front pads were worn very close to required replacement. Service writer said that Infiniti would cover the cost of replacement rotors as a one-time goodwill gesture due to the low mileage on the car, but I was to bear the cost of brake pad replacement. I ordered OEM front brake pads from grubbs Infiniti of texas. …
I bought this car used, should have checked this site first. I now have to replace my brakes once a year because they wear prematurely. That is a $1000 job. Only have has the car for 3 years. Last year in 09, the cd player stopped working with 6 cd's stuck in the changer, I had nationwide infinity look into this, when they said it would be $1400 to fix, but my year car has these problems. So I said forget it, I do not have this kind of money sitting around. Then couple months after that, the radio would shut off by it self a couple times a week and come right back on. Then just the other day, being June 5th 2010 my radio would not come on at all and I now have no control over my air condition. It is stuck on 70 full blast. Now wasting a ton of gas also. …
At 9.5K service (3rd), car had slight pulsing in the brakes. Dealer confirmed warped rotors and machined. Estimated remaining pad life only about 50%. Car and brakes have been well maintained in mainly city driving. This is the fastest wear I have seen on any car I have owned in 35 years including numerous performance cars. Dealer acknowledges many complaints for premature brake wear. This has also been a reccuring topic on Infiniti web forums. Dealer indicated Infiniti used to cover this as warranty but is now balking at replacement under the guise these are "high performance" brakes and normal wear and tear. With the potential for ultra short brake life, some consumers May not believe the brake wear indicator squeal and not get the brakes checked in time to prevent failure. This could turn into a long term safety issue. …
I took in the car for an oil change and service for recalls and the service dept. Notified me that the front brake pads on both sides were almost completely worn out and the rotors would need resurfacing. I purchased the car from the same dealer in April 2002 and the car was built in March 2002. The car presently has 17.5K miles on it. It is ridiculous, even with performance brakes, for them to fail at such a low mileage. My previous car that I traded in to this dealer was a 1998 320 hp Pontiac t/a with an even greater weight and power than this car, and the brakes lasted 40K miles. I believe the brakes Infiniti uses in the G35 should be replaced for free for the duration of the warranty since this is unacceptable. Also, make sure your dealer puts something in writing that they will replace the rotors once they are serviced beyond repair. Don't let the Infiniti service dept. …
I purchased my 2003 Infiniti G35 in October 2003. I only have 19,000 miles on my car and the brakes have been squeaking loudly since about 13,0000 miles. I have mentioned this to the service dept at the dealership on 2 or 3 occasions when I've taken my car in for service and was told this is normal. I've bought several cars and never have I heard that the breaks squeaking unbearably was normal. They told me to wait until I bring my car in for service again and if the brakes are even more worn down they might see what they can do. I don't know if the car is even safe to drive. Do the breaks have to totally go out and I run into the back of someone before I can get them fixed under warranty??? I have a 95 mustang and it sounds better than my 2003 Infiniti. I don't want to pay 30,000 for a car that squeeks as if I'm driving an old beat up lemon. Help! Kdj.
Infinity has neglected to remedy a well documented problem with their defective brake pads and rotors particularly as it pertains to the 2003 and 2004 G35 sedan with automatic transmission. Extremely excessive wear results in rotor replacement every 10-15,000 miles. Warranty program addressing the problem failed to inform consumers that the new rotors replacing the defective rotors were the same make and manufacturer. Consumers LED to believe defective rotor situation was resolved only to discover (after warranty expired) that rotors failed again. Result is excessive repairs due to faulty parts and extreme loss of resale value. Infinity refuses to cover replacement. My 2003 G35 has 29,877 miles and needs it's second set of rotors!
I purchased my 2003 Infiniti G35 in August 2002. When I first purchased my vehicle I noticed a lot of brake dust on my front brakes. I informed the service dept of the dealership where I bought the vehicle and was told this is normal. About a month later I began hearing a squealing sound when I applied the brakes, I contacted the dealership again and I was told that this was normal. The dealer even began to read me an article/publication suggesting that this was because these were high performance brakes. Needless to say after back and forth with this dealer and Infiniti for over 4 months, to no avail I left the issue alone. Now 6 months later, I require new front brakes at only 19,000 miles.
Bought my Infiniti G35 in May of 2002, ever since day one, the driver's seats seems to be moving, rocking during acceleration and braking.. This seems to be a common problem on a lot of G35's. Dealer's and Infiniti has not relesase a fix that works yet after a year... I believe that this is a dangerous problem, because twice my foot slipped off of the brake pedal during braking and almost caused an accident..... There also seems to be a problem with life of the brake pads and rotors where they might fail prematurely... Most drivers of the g complain that their pads and rotors are needing to be replaced as soon as 8,000 miles and are not covered by the warranty.
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.
Brake complaints in other G35 years
Frequently asked questions
How common are brake problems on the 2003 Infiniti G35?
NHTSA has 53 complaints about the brakes of the 2003 Infiniti G35, 10% of the model year's 533 complaints. The component named most often is foundation components › disc › rotor (15 mentions).
Is there a recall for 2003 Infiniti G35 brake problems?
No. NHTSA lists no brakes 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 brake problems start?
Half of the complaints with a recorded mileage happened before about 18,000 miles, and 63% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 0 injuries to brakes problems on this model year. If you notice symptoms, have the car checked before driving further.
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.