"How reliable is the 2003 Infiniti G35?"

"Based on 737 NHTSA complaints, the 2003 Infiniti G35 has a median complaint mileage of 87200 miles. The most common issue is Electrical System."

"What are common problems with the 2003 Infiniti G35?"

"The most frequently reported component in NHTSA complaints for the 2003 Infiniti G35 is Electrical System, accounting for a significant portion of the 737 total complaints filed."

2003 Infiniti G35: Reliability Data

Source: NHTSA — 737 complaints

737

Total Complaints

87,200mi

Median Mileage

Electrical System

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

65,000 25th Percentile

87,200 Median Mileage

117,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Electrical System

218

Engine

Engine And Engine Cooling

Exterior Lighting

Visibility

Defroster/Defogger/Hvac System

Service Brakes, Hydraulic

Equipment

Radio/Tape Deck/Cd Etc.

Seats

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"CONSUMER STATES VEHICLE'S CLOCK IS POORLY ILLUMINATED, MAKING IT DIFFICULT TO VIEW WHEN DARK. CONSUMER STATES HAS TO TAKE EYES OFF OF ROAD WHEN ATTEMPTING TO VIEW CLOCK BECAUSE OF IT'S UNSAFE DESIGN. MR"

"WHILE DRIVING ON AN ENTRANCE RAMP TO HIGHWAY THE REAR WINDOW SHATTERED. THERE WAS NO OVERPASS WHERE AN OBJECT COULD HAVE BEEN DROPPED. THE ENTRANCE RAMP AT THE POINT OF IS LONG WAY FROM ANY OTHER TRAFFIC. I FAIL TO SEE HOW A SMALL PEBBLE COULD CAUSE THE REAR WINDOW TO SHATTER INTO SO MANY PIEC..."

"CONSUMER STATED THE AUTOMATIC TRANSMISSION DOESN'T SHIFT PROPERLY FROM FIRST GEAR. DEALER HAS BEEN NOTIFIED. PLEASE PROVIDE FURTHER INFORMATION.*JB"

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

Electrical System 218 complaints

25th: 73,651 mi Median: 90,000 mi 75th: 114,000 mi

Engine 62 complaints

25th: 92,400 mi Median: 130,000 mi 75th: 161,000 mi

Engine And Engine Cooling 53 complaints

25th: 79,742 mi Median: 95,000 mi 75th: 120,000 mi

Exterior Lighting 45 complaints

25th: 72,792 mi Median: 100,000 mi 75th: 126,500 mi

Visibility 34 complaints

25th: 79,500 mi Median: 93,100 mi 75th: 108,227 mi

Where Are Complaints Coming From?

Top states by complaint count.

CA: 180 FL: 66 TX: 50 GA: 43 NJ: 31 NY: 31 PA: 29 WA: 27 IL: 24 MD: 24

Who Files Complaints?

11.8%

Original Owners

88.2%

Second+ Owners

Infiniti G35 — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
2004	351	67,450	Engine	27
2005	295	80,000	Air Bags	15
2006	184	66,728	Air Bags	11
2007	149	67,000	Air Bags	10
2008	130	75,000	Air Bags	17

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28