Problems · by component

2004 Infiniti G-Class engine problems

43 owner complaints to NHTSA about the 2004 Infiniti G-Class cite engine, 18% of all 244 complaints for this model year.

Complaints
43
18% of all complaints
Crashes
3
Reported by owners
Fires
2
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the engine

Verbatim from NHTSA complaints, newest first
“Car has unintended acceleration that can only be stopped by turning off ignition key. This happens without warning. When stopped and foot on brake car accelerates to top rpm then brake goes to floor resulting in no control of car.”
Owner complaint to NHTSAFiled Aug 27, 2024Vehicle speed control, Service brakes, EngineCrash reportedODI 11611258
“[XXX] ,[XXX] , Blmfld Ct [XXX]. [XXX] Hot Wheels Auto Sales LLC , 367 Oakland St , Manchester Ct 06042. [XXX] salesman [XXX] ([XXX]) [XXX] owner 11/2/21, I brought my 2004 Infiniti g35 to Monro muffler/brake 431 main st East Hftd Ct 06118 [XXX] due to a noise in the tire area. The Inspection shows there is Bondo filler placed in rotten holes and sprayed with black spray paint (underbody cover up). oil leaks, drive shaft problem. right front axle, steering rack leak, Knock sensor, rear shocks, oil filter housing leak. 11/2/21 I bring the vehicle to Infiniti dealer 150 Weston St Hartford CT 06120 [XXX] ext.[XXX] The diagnosis the car is unsafe, will not pass a safety inspection, will not pass emission, multi leaks, oil cooler seal, incorrect trans line, clamps leaking, axle seal, valve cover, cam sensor, right axle inner joint is failing coming apart, Bondo filler in rotten holes sprayed black and structural damage. 11/6/21 I went to Hot wheels and talked with [XXX] and [XXX] . [XXX] offered $2,000 for the car which is not a fair price. Then [XXX] stated he will call his welder. 11/10/21, I drove the car to Standard Welding 212 Prospect St East Hartford Ct 06108.…”
Owner complaint to NHTSAFiled Nov 24, 2021Electrical system, Structure, EngineODI 11441623
“VEHICLE WAS IN MOTION ON A CITY STREET WHEN THE ENGINE SEEMED TO ACQUIRE A LIFE OF ITS OWN AND SPED UP, UNRESPONSIVE TO DRIVERS APPLICATION OF BRAKES FOR SEVERAL SECONDS.AS DRIVER BROUGHT THE VEHICLE TO A STOP, A PUFF OF WHITE SMOKE EMERGED FROM UNDER THE HOOD.”
Owner complaint to NHTSAFiled Dec 22, 2020Service brakes, Engine, Fuel/propulsion systemFire reportedODI 11384590
“THE CAR BURNED NEARLY 4.2. QTS OF OIL IN UNDER 4000 MILES. MASSIVE NUMBER OF USERS INDICATE SAME PROBLEM OF INSANE AMOUNTS OF OIL CONSUMPTION ON VARIOUS FORUMS ON THE INTERNET. THIS IS MOST LIKELY ALSO A SERIOUS SMOG VIOLATION IN CA AND ALSO IS CAUSING ENGINES TO BLOW UP. NUMEROUS MECHANICS WILL VERIFY THAT THEY HAVE SEEN THE SAME PROBLEM WITH ENGINES BLOWING AT UNDER 100,00 MILES DO TO EXCESS OIL CONSUMPTION. I HAVE PROOF OF MY LAST OIL CHANGE AND NUMBER OF MILES. ALSO THE AMOUNT OF OIL THAT CAME OUT OF MY CAR WAS LESS THAN A QUARTER OF QUART AFTER ONLY 4,000 MILES OF DRIVING. MY MECHANIC VERIFIED THAT THERE ARE NO LEAKS. PLEASE NHTSA! PLEASE INVESTIGATE THIS ISSUE FURTHER. 20,0000 DOLLAR CAR IS BASICALLY TOTALED NOW. ALL DEALERS AND NISSAN REFUSES TO ACKNOWLEDGE THE PROBLEM EVEN THOUGH THERE IS A HIGH POSSIBILITY THEY KNOW OF THE PROBLEM AND ARE HIDING IT. ALSO, THE AIRBAG LIGHT HAS BEEN ON FOR THREE YEARS AND NO MATTER HOW YOU RESET IT, IT WILL CONTINUALLY RETURN TO BEING ON, INDICATING SOME SORT OF PROBLEM WITH THE AIRBAGS. *TR”
Owner complaint to NHTSAFiled Jan 18, 2017Air bags, EngineODI 10946244
“THIS CAR HAS EXCESSIVE BURNING OF OIL AND IT IS WELL KNOWN IN THE FORUMS FOR G35 DRIVERS. THIS IS FOLLOW UP ON A COMPLAINT I JUST MADE. I HAD THE CAR'S OIL CHANGED WITH SYNTHETIC AND ALWAYS MAKE SURE IT IS CHANGED EVERY 3-5000 MILES. THOUGH THE CAR BURNED OFF NEARLY 4.25 QTS OF OIL IN UNDER 4,000 MILES CAUSING DAMAGE TO MY ENGINE, THE OIL LIGHT NEVER CAME ON THE WHOLE TIME EVEN THOUGH THERE WAS NO OIL IN THE CAR. THE MECHANICS I WORK WITH INDICATED THAT THEY HAD THE SAME EXACT CAR AND HAD BLOWN 3 OF THE EXACT SAME ENGINES BETWEEN THE TWO OF THEM. THIS IS ABSURD. PLEASE NHTSA PLEASE HELP CONSUMERS THAT ARE HAVING BLOWN ENGINES DUE TO THE LACK OF COOPERATION BY INFINITI. *TR”
Owner complaint to NHTSAFiled Jan 18, 2017EngineODI 10946247
“WHILE DRIVING ON HIGHWAY AT A SPEED OF 65 MILES WHEN MY CAR SHUT OFF; I'M BLESSED THAT I WAS DRIVING ON A TWO LANE HIGHWAY AND MANEUVER OVER QUICKLY WITHOUT ANOTHER CAR REAR ENDING ME. AFTER SITTING FOR 10 MINUTES THEN THE POWER KICKED BACK IN. WHAT COULD BE THE ISSUE......NOW THE SERVICE ENGINE SOON LIGHT IS ON SO IS THE SLIP AND VDC LIGHT AS WELL. I HAVE BEEN EXPERIENCING THIS PROBLEM FOR AT A MONTH WHILE DRIVING CAR CUTTING OFF. BUT THIS IS THE FIRST TIME CAR COMPLETELY CUTTING OFF AND LIGHTS COMING ON (SERVICE ENGINE, VDC, AND SLIP) THE CHECK ENGINE LIGHT IS STILL ON. MY AIRBAG LIGHT HAS BEEN BLINKING SINCE I TOOK OWNERSHIP OF VEHICLE IN NOVEMBER 2015. THE CURRENT VEHICLE MILES IS 152,000. *TR”
Owner complaint to NHTSAFiled Oct 31, 2016Air bags, EngineODI 10920406

Showing 6 of 43 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 30, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Other 2004 G-Class problem areas