| 1 | 0 | 3 | 4 | 3 | 4 |
2008 Infiniti G repairs by problem area
Engine (26%)
Transmission and Drivetrain (8%)
Brakes and Traction Control (6%)
Suspension and Steering (12%)
Electrical and Air Conditioning (21%)
Paint, Rust, Leaks, Rattles, and Trim (20%)
Other (7%)
Chart based on 434 repairs.
2008 Infiniti G engine repair cost distribution
$2500+ (1%)
$1000 - $2499 (4%)
$500 - $999 (9%)
$100 - $499 (33%)
< $100 (53%)
Chart based on 93 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2008 Infiniti G 4dr Sedan
306-horsepower 3.5L V6 6-speed manual RWD
| 134300 mi US $110 |
Replace Radiator Fan |
| 65300 mi US $460 |
Heard a tapping sound from the dash when revving above 3500 rpm. Found a TSB (ITB07-007) that applied and asked my dealer to perform it. Work involved replacing the engine coolant and flushing the heater core. |
| 86300 mi US $300 |
Idle was dropping after a warm start. Did a throttle body cleaning. |
| 100000 mi US $200 |
Radiator fan control module went bad, and radiator fan was running all the time. Shop replaced it. |
| 110000 mi US $600 |
Car was overheating. Shop diagnosed two leaky radiator hoses, replaced them, and replaced the coolant. |
2008 Infiniti G 4dr Sedan
306-horsepower 3.5L V6 5-speed shiftable automatic RWD
| 30000 mi | Car would die after starting (warm engine), or RPM's would drop so low I needed to press gas to keep engine running. Dealer performed ECM reprogram per TSB ITB11-018. |
| 99000 mi US $200 |
NOISE IN ENGINE--REPLACED ALL BELTS AND WAS CORRECTED |
| 100000 mi US $300 |
LOOSING COOLANT DUE TO BROKEN PART BELOW MAIN COOLING HOSE |
| 78740 mi | replace bank 1 o2 sensor |
| 70000 mi US $700 |
Belts needed to be replaced |
| 60000 mi US $57 |
G ride would act like it was going to shut off at startup & after coming to a complete stop from driving. |
| 62000 mi US $157 |
Cleaned throttle body & intake. Adjusted the timing. |
| 65000 mi US $160 |
Stalling, when exiting highway, cleaned throttle body & all emissions at dealer |
| 98000 mi US $150 |
Car suddenly would not respond, I would step on the gas and it would not go past 5-10mph. House was approx. 1mile away. drove it slow, parked it. Next day engine light was on and drove "kind of ok" felt sluggish. needed immediate attention. Fuel injectors were clogged, that's what I was told by Dealer. I only used Premium Fuel, don't know why they were "clogged" but decided to get them cleaned out. |
| 62000 mi US $94 |
Leaking coolant hose. Slow leak. |
| 49000 mi | Catalytic converters crack threw ses light. |
| 29000 mi | Car was taken to dealer for extended crank time/intermittent no-start, and OCS problem. Could not duplicate no-start (fuel pump quit 6 miles after vehicle pickup) |
| 29300 mi | 3 days after we picked car up at dealer, fuel pump died in the driveway. Infiniti roadside assistance towed the car and the dealer replaced the fuel pump under warranty. |
| 45000 mi | I noticed a minor rattling sound under 20 MPH and ONLY when I took my pedal off the gas. Dealer noticed it too and upon further inspection, they deemed one of the catalytic converters at fault. They said the issue was caught early. |
| 62000 mi | I noticed a rattle sound coming from under the car under light acceleration. I identified the right catalytic converter as the culprit. Dealer confirmed and replaced it under warranty. |
| 115300 mi US $120 |
A three piece hose that is part of the heater core was leaking coolant behind engine. It was leaking over headers and causing a sound of rushing water under acceleration. It was a quick fix that took about an hour to swap out. |
| 130000 mi US $65 |
A small hose from the heater to the engine block tore and I was leaking coolant. It wasnt overheating so I dropped it off at shop and a day later, the hose was replaced. |
| 162000 mi US $273 |
Car was leaking fuel and smelled via AC. Shop identified some sort of pressure regulator hose (before fuel goes to the engine), was leaking. The entire part had to be changed. Small coolant hose was leaking coolant. Part was ordered but had to return the following week to replace. |
| 164000 mi US $1959 |
Water pump leaking coolant, Service Engine Soon light on for thermostat. It was stuck in open position. $1059. valve cover gaskets were leaking oil. Replaced valve covers and also discovered two hoses torn and another engine plastic part slightly broken. $900. |
| 25000 mi | Replaced fuel tank breather valve due to tank not filling up at gas station. A TSB was applied. |
| 87000 mi US $3200 |
Replaced internal oil gasket due to low oil pressure in upper engine |
| 60100 mi US $350 |
cracked radiator hose needed to be replaced - discovered during 60,000 mile service. |
| 64000 mi US $300 |
Updated software to fix idle issue. |
| 69960 mi US $200 |
VTC Solenoids were sticking, causing RPM drop. Dealer replaced timing cover. RPM fluxuated after highway driving. Had computer re-flashed previous year..didnt fix issue. The VTC solenoid was found to be sticking, and it was repaired. |
| 102000 mi US $200 |
Valve Cover Gaskets leaking, noticed when plugs were changed. |
| 34000 mi | leaking upper radiator hose |
| 46200 mi | After not driving the car for a week, it developed a high and surging idle problem. Code P0507. The dealership "downloaded an ECM update" to fix the problem, covered under powertrain warranty. |
| 54000 mi US $20 |
leaking radiator hose clamp |
| 111000 mi US $435 |
Coolant bypass hose |
| 90000 mi | Engine warning light came on but the mechanic found nothing wrong. |
| 59000 mi | Catalytic converter O2 sensors bad, had that bad sulfer smell!! |
| 75000 mi US $50 |
O2 sensor replaced, bank one! |
| 260000 mi US $400 |
Replaced spark plugs and ignition coils |
2008 Infiniti G 4dr Sedan
306-horsepower 3.5L V6 5-speed shiftable automatic AWD
| 40700 mi C $175 |
Took car in for oil change, dealer said car needed rad hose replaced and coolant flushed. The vehicle had just come off warranty 4 days previously. They paid as they would not inspect the car prior to coming off warranty. |
| 141000 mi US $200 |
Oil Cooler Gasket was failing. Had it replaced. |
| 189000 mi US $359 |
thermostat, head temp sensor, fan controller |
| 69000 mi US $200 |
Exhaust was rusted and was repatched |
| 71000 mi US $200 |
Exhaust pipe got rusted on the other side. Run off from the rain seems to drip off the same location on the exhaust muffler pipe. Nothing wrong from muffler, just the pipe needed to be reconnected. Might need to properly fix it with a full replacement of the exhaust |
| 148000 mi US $535 |
Code P0011. Replaced right side solenoid timing thing |
| 148200 mi US $535 |
Code P0011. Replaced left side solenoid timing thing |
| 133920 mi | Heat shield: trailing end detatched from catalytic converter was dragging on the pavement. Re-attached. |
| 68000 mi | Car shuts of on hills when idiling. Reset computer. |
| 37000 mi US $384 |
Idle was producing a loud ticking noise and I noticed the oil level was lower than it should be for a 3000 mile interval. Dealer reset the idle and did not find any issues with the car. |
| 67000 mi US $72 |
Catalytic converters are both rusting through. Dealer's quote to replace is $2,000. Was quoted $2,400 by Meineke. It passed emissions testing 2 days later. |
| 130200 mi US $82 |
part of emissions system. vapor canister vent valve. |
| 192000 mi US $700 |
Resonator assembly replaced due to erosion on pipe where weld cannot be made. |
| 42000 mi | THROTTLE BODY failed. Car did not start. At first thought it was the battery but jump start was not successful from three different cars and a charger. "Service engine soon" light came on. The dealer said that they did not reprogram computer to recognize new THROTTLE BODY part they installed during the last trip. |
| 61000 mi | Ticking sound. Needed new catalytic converter. Covered by warranty. Needed 2 days for parts to arrive and install after initial consultation |
| 98000 mi US $270 |
Stepping on throttle, it sounded like the engine was about to stall. Also variable RPM on tachometer during idle. Replaced mass airflow sensor to remedy the problem. |
| 42500 mi | Upper radiator hose leak at connection. Added sealant to upper rad hose and install additional clamp. Leak was minor but fairly common according to G owners. |
| 48000 mi | Hairline crack in head gasket turned even more major work when a crack in the external right camshaft was discovered. New cam and related parts had to be ordered in from Japan. A 2011 G37x was provided for the full period as a loaner. |
| 4000 mi | Service Engine Soon light went on. Car ran fine. Called and went to dealer who checked car computer that indicated something with the emission system (gas cap not on right but it was). He reset the software and the car has been fine since. Took 30 min. |
| 52000 mi US $10 |
Car began stuttering and hesitating after fuel fill-up and complete stall-out occurred. Car did restart and I suspected bad fuel. Cleaned out air intakes and refilled fuel at a different station. Car is now running 100%. |
| 95700 mi US $350 |
Heated oxygen sensor, right side, tripped the check engine light and had to be replaced. |
| 97000 mi US $80 |
Serpentine belt tensioner had to be replaced--was causing belt misalignment and premature belt wear. |
| 124000 mi US $250 |
Left and right flex pipes were replaced. |
2008 Infiniti G 2dr Coupe
330-horsepower 3.7L V6 6-speed manual RWD
| 24200 mi | Exhaust making rattle noise |
| 4000 mi | I had an exhaust/muffler that made a buzzing/rattling noise on a cold start and I got the muffler replaced by the updated part! |
| 30000 mi | Exhaust rattle, loose metal in muffler baffles. |
| 42000 mi US $1272 |
Leaking valve cover. Gasket and valve cover was replaced. |
| 2000 mi | Coolant odor - No leak found - Low beams aimed low - found to be within spec - Clear bra peeling & turning black around edges - clear bra removed - passenger air bag off lamp - system working within spec. |
| 81900 mi US $371 |
Idle issue. On startup, will start then fail. When idling, idle will drop to 200rpm then come back up. Performed Fuel Induction Service and Reset Idle and ECU. |
| 10000 mi | The second bank of the VVEL was knocking loudly when at idle. |
| 105000 mi US $450 |
Replaced spark plugs at 104,000 (with autolite). Engine running rough- general misfire across all plugs. Switched to original NKG plugs, corrected the misfire. ( Original plugs looked pretty good for 104,000 miles.) |
| 7000 mi | Muffler rattling; replaced as per TSB. |
| 8000 mi | VVEL knocking; repaired via TSB. Repair succesfully. |
| 2000 mi | Muffler replaced. |
| 4000 mi | Rattle in main muffler TSB. |
| 23000 mi | I noticed a rattle when starting the car & asked service at the Infiniti dealer to look into it during regular service. They decided muffler was the problem, and replaced it under warranty (no cost to me). I was happy with the resolution. |
| 9000 mi | Service engine soon light came on. It was determined that the problem wasn't a loose gas cap. Infiniti picked up the car, left a loaner and reset the computer management. |
| 128200 mi | battery was being drained by a faulty sensor in the exhaust system. Dealer replaced the sensor and the battery at no charge. Also, rotors were resurfaced due to shaking when brakes were applied (pads replaced as well). |
| 268000 mi US $400 |
coolant hose broke, draining all coolant |
2008 Infiniti G 2dr Coupe
330-horsepower 3.7L V6 5-speed shiftable automatic RWD
| 9000 mi | Idle speed high under some conditions. Existing TSB covered this and dealer re-flash the ECU. |
| 11000 mi | Exhaust rattle when cold. |
| 23000 mi | Battery Drain issue finally fixed. |
| 44000 mi US $125 |
Defective muffler replaced under warranty |
| 22320 mi C $1000 |
Broken muffler, internal baffling rattling with no external corrosion present .. rattles upon start up and just off idle |
| 14000 mi | TSB loose baffle in muffler. |
| 15000 mi | TSB on exhaust |
| 24000 mi | Dealer replaced battery, vent control valve and re-programed ECM under warranty |
| 29000 mi US $650 |
Muffler started to make noise on start up. |
| 63000 mi US $1500 |
Cat convert |
| 34000 mi | Engine would surge about 500 to 1000 rpm's after coming to a stop with foot on brake pedal. Dealer reset ECM. This also stopped the lifter rattle. |
| 4000 mi | TSB - when slowing or breaking RPMs would surge up 400 rpms. |
| 101000 mi | Juddering sound was coming from front end at speed. The problem was diagnosed to a loose gravel shield. The dealer fixed this by replacing a missing shield clip at no charge. |
| 5000 mi | Exhaust rattle. New muffler ordered. Scheduled to be repaired Friday 01/03/2008. |
| 37000 mi | The dealership replaced some kind of valve in the engine free of charge. |
| 23000 mi | Switch for Sport mode in shifter assembly went bad. Shifter would no longer recognized sport mode even though shifter was in sport mode position. New shifter assembly ordered and replaced and problem fixed. |
| 9300 mi | NOT FIXED: Reverse squeek/squeal NOT FIXED: Engine Surges when in reverse |
| 33000 mi US $700 |
rattling exhaust |
| 36000 mi | Car consumed enough oil in 5k miles to put the car into limp mode |
| 20000 mi | Replaced muffler due to rattles |
| 19000 mi | occasional intermittent surge and rough idle, Mfg bulletin 07-0488 reprogrammed ECU with latest logic. |
| 26000 mi | Muffler inner baffle breaks free. A rattle can be heard in the muffler as the engine decelerates to idle after high rev - known problem. |
| 40700 mi | I had a hard time filling my car with fuel. I asked the dealer and it is a known problem, the dealer replaced the gas vent valve with a newly designed one. |
| 47000 mi | Gas tank vent not working properly. When filling tank the fuel would gurgle up the fill spout shutting off the nozzle. Radiator hoses needed replacement. |
| 116000 mi US $810 |
Replaced fuel neck check valve. I was having a hard time filling the tank. |
| 123000 mi US $140 |
Hesitation when accelerating from a stop. Sometimes hesitation on the go randomly. Shop updated ECM software and placed in re-learn. Have not had any problem since. |
2008 Infiniti G 2-door
6-cylinder manual 2WD
| 14000 mi | Exhaust muffler had to be replaced as it was making a tin can sound. |
2008 Infiniti G 2-door
6-cylinder automatic 2WD
| 41000 mi | baffles issue in exhaust covered by warranty |
| 5000 mi | defective muffler. new one ordered |
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