Infiniti

Q70 (2003)

2003 · Midsize Sedan · 3 engines
Best Engine ⚠️ Caution (3.4)
226 NHTSA Complaints
6 Recalls
0 Fire Reports
2 Crash Reports
Includes data from: I30I35MM45
View all 7 generations of the Infiniti Q70 → 📋 Inspection checklist

Engine Reliability Ratings

Infiniti Q70 Unidentified Engine

⚠️ Caution (3.4)
25 complaints 25.0 per year
View details

Complaint Breakdown

fuel system
12
engine
7
electrical
6
cooling
3
brakes
2

Known Issues

Fuel System Issues (12 complaints)
Engine Issues (7 complaints)
Electrical System Issues (6 complaints)

4.5-V8-Gas

4.5L 8-cyl
⚠️ Caution (2.6)
113 complaints 113.0 per year Gasoline
View details

Complaint Breakdown

fuel system
67
engine
39
electrical
20
cooling
18
interior
5

Known Issues

Fuel System Issues (67 complaints)
Engine Issues (39 complaints)
Electrical System Issues (20 complaints)

Same engine used in

Vehicle-Level Issues

These issues affect the Infiniti Q70 regardless of engine variant.

Engine Issues (112 complaints)
engine moderate
Fuel System Issues (79 complaints)
fuel_system cosmetic
Electrical System Issues (46 complaints)
electrical cosmetic
Cooling System Issues (43 complaints)
cooling cosmetic

Recalls (6)

20V008000Aug 31, 2020critical
Air Bags

Nissan North America, Inc. (Nissan) is recalling certain 2001-2003 Maxima, 2002-2006 Sentra, 2002-2004 Pathfinder, 2007-2011 Versa Sedan and Versa Hatchback, 2001-2004 Infiniti I30 and I35, 2002-2003 Inifiniti QX4, 2003-2008 Infiniti FX35 and FX45 and 2006-2010 M35 and M45 vehicles. The vehicles are equipped with non-desiccated, frontal passenger air bag inflators containing phase stabilized ammonium nitrate (PSAN) propellant that were used as interim remedy parts for previous Takata recalls. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.

16V349000May 23, 2016critical
Air Bags

Nissan North America, Inc. (Nissan) is recalling certain model year 2003-2008 Infiniti FX35 and FX45, 2003-2004 Infiniti I35, 2006-2010 Infiniti M35 and M45, and 2007-2011 Nissan Versa vehicles, originally sold, or ever registered, in Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A." Additionally, unless included in "Zone A" above, Nissan is recalling certain model year 2005-2008 Infiniti FX35 and FX45, 2003-2004 Infiniti I35, 2006-2008 Infiniti M35 and M45, and 2007-2008 Nissan Versa vehicles, originally sold, or ever registered, in Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B." Lastly, unless included in "Zone A" or "Zone B" above, Nissan is recalling certain model year 2003-2004 Infiniti I35 vehicles originally sold, or registered, in Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. These inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

15V226000Apr 16, 2015critical
Air Bags

Nissan North America, Inc. (Nissan) is recalling certain model year 2003-2004 Infiniti I35, 2003-2005 FX35 and FX45, and 2006 M35 and M45 vehicles originally sold, or currently registered, in geographic locations associated with high absolute humidity. Specifically, vehicles sold, or ever registered, in Florida, Hawaii, Puerto Rico, the U.S. Virgin Islands, Saipan, Guam, and American Samoa, as well as Alabama, Mississippi, Louisiana, Texas, and Georgia, are included. Upon deployment of the passenger side frontal air bag, excessive internal pressure may cause the inflator to rupture.

15V287000May 14, 2015critical
Air Bags

Nissan North America, Inc. (Nissan) is recalling certain model year 2001-2003 Nissan Maxima, 2002-2004 Pathfinder, 2002-2006 Sentra, 2002-2003 Infiniti QX4 and I35, 2003 FX35 and FX45, and 2001 I30 vehicles. Upon deployment of the passenger side frontal air bag, excessive internal pressure may cause the inflator to rupture.

12V088000Jun 2, 2012serious
Fuel System

NISSAN IS RECALLING CERTAIN MODEL YEAR 2003-2004 INFINITI M45 VEHICLES MANUFACTURED FROM MARCH 7, 2002, THROUGH JUNE 3, 2004. DUE TO A CIRCUIT BOARD FAILURE, THE FUEL GAUGE MAY READ A FUEL LEVEL HIGHER THAN ACTUALLY EXISTS. AS A RESULT, THE VEHICLE MAY RUN OUT OF GAS WITHOUT NOTICE.

03V455000Nov 16, 2003serious
Engine & Cooling

ON CERTAIN PASSENGER VEHICLES, THE CIRCUIT BOARD FOR THE CRANK POSITION SENSOR OR CAM POSITION SENSOR MAY HAVE AN IMPROPER SOLDER JOINT DUE TO SOLDER DEFORMATION CAUSED BY HEAT STRESS ACCELERATED BY THE EXISTENCE OF FLUX RESIDUE DURING THE SOLDERING PROCESS.

Alternatives in Midsize Sedan

Frequently Asked Questions

What are the most common 2003-2003 Infiniti Q70 problems?

The 2003-2003 Infiniti Q70 has accumulated 226 NHTSA complaints. The most frequently reported problem areas are Engine, Fuel System, Electrical System. As with any used vehicle, an inspection before buying and a vehicle history report are recommended.

Which Infiniti Q70 engine is most reliable?

The 2003-2003 Infiniti Q70 was offered with 3 engine options. Based on NHTSA complaint data, the 3.5L 6-cyl has the lowest complaint density and is considered the most reliable choice for buyers.

Is the 2003-2003 Infiniti Q70 a good used car?

The 2003-2003 Infiniti Q70 can be a sound used car depending on trim, mileage, and maintenance history. With 226 total NHTSA complaints on record, prospective buyers should review the known problem areas and check for open recalls before buying.

How many NHTSA complaints does the 2003-2003 Infiniti Q70 have?

The 2003-2003 Infiniti Q70 has 226 complaints filed with NHTSA as of our latest data pull. Complaint counts reflect owner-reported issues and do not necessarily indicate defects or safety risks on their own.

What recalls affect the 2003-2003 Infiniti Q70?

There are 6 NHTSA recalls affecting some 2003-2003 Infiniti Q70 vehicles. Recall status varies by VIN — check the NHTSA recall database at recalls.nhtsa.dot.gov with your specific VIN to confirm which campaigns apply.

What should I check before buying a used Infiniti Q70?

Before buying a used Infiniti Q70, verify all open recalls are completed via the NHTSA VIN lookup tool. Pay particular attention to Engine, Fuel System, Electrical System, which are the most commonly reported problem areas. Request maintenance records, have an independent mechanic inspect the vehicle, and run a vehicle history report to check for prior accidents or title issues.

Does the Q70 have NHTSA crash test ratings?

NHTSA has not published crash test ratings for the 2003 Infiniti Q70. Not all vehicles are tested each year. For the latest NHTSA safety information, visit nhtsa.gov/ratings.

Data from NHTSA federal complaints database. 226 complaints analyzed. Data confidence: high. Last updated: 2026-05-23.

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