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Research · Midsize Cars

2001 Infiniti Q45Recalls, problems, MPG & safety

NHTSA lists 1 safety recall and 4 owner complaints for the 2001 Infiniti Q45. Most complaints involve electrical system (2) and child seat (1). The EPA rates it 18 mpg combined.

Check a VINAdd to my garage
Combined MPG
18mpg
EPA · 1 version
NHTSA overall
—
Not rated by NCAP
Safety recalls
1campaigns
Latest Mar 2003
Owner complaints
4
Top: electrical system
Fuel cost / yr
$4,400est.
EPA estimate, best version
01 —Recalls

Safety recalls

1 NHTSA campaign · applies to some vehicles, check your VIN

Wheels

Free remedy

ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 17 INCH ALLOY WHEELS, THE WHEELS MAY HAVE A CASTING DEFECT FROM WHICH CRACKS COULD PROPAGATE AS THE VEHICLE IS BEING DRIVEN.

WheelsReported Mar 19, 2003NHTSA 03V098000
Data from NHTSA Recalls API · synced Oct 30, 2026 · All recall detailsNHTSA vehicle page
02 —Complaints

Owner complaints by component

4 complaints filed with NHTSA · Aug 2003 – Jan 2007
  1. Electrical system2
  2. Child seat1
  3. Vehicle speed control1

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

By model year

Complaints for each Q45 model year we’ve synced.

View as table
Model yearNHTSA complaints
19967
199712
199814
19999
20009
20014
200222
200314
20047
20054
Crashes reported
1
Fires reported
0
Injuries reported
0
Deaths reported
0
Data from NHTSA Complaints API · synced Oct 30, 2026NHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Electrical system

2 reports
“TL* - THE CONTACT STATED THAT DURING 2006 THEY REPLACED THE ALTERNATOR IN HER 2001 INFINITI Q45. THE CONTACT IS CONCERNED BECAUSE SHE WAS INFORMED OF A RECALL IN CANADA FOR A SIMILAR FAILURE. THE CURRENT ODOMETER READING IS 79000. *NM UPDATED 03/02/07. *JB”
Owner complaint to NHTSAFiled Jan 16, 2007Electrical systemODI 10178823

Child seat

1 report
“CHILD SAFETY SEAT FAILURE, HARNESS ADJUSTER FAILS TO PROPERLY TIGHTEN. *BF *SC *JB”
Owner complaint to NHTSAFiled Sep 28, 2004Child seatODI 10095490

Vehicle speed control

1 report1 crash
“WHEN THE CONSUMER PLACED THE VEHICLE IN THE REVERSE GEAR THE VEHICLE ACCELERATED SUDDENLY AND CAUSED AN ACCIDENT. *AK *CB *NLM”
Owner complaint to NHTSAFiled Aug 1, 2003Vehicle speed controlCrash reportedODI 10026873
Send a problem to a mechanic on findmechanic.ai
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 30, 2026
04 —Key specs

Engines, transmissions & drive

1 version rated by the EPA
EPA class
Midsize Cars
Engines
4.1L 8-cyl
Transmissions
Automatic 4-spd
Drive
Rear-Wheel Drive
Fuel
Premium Gasoline

Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.

Data from EPA fueleconomy.gov · synced Oct 30, 2026EPA listing
05 —Fuel economy

EPA fuel economy by version

City / highway / combined, annual fuel cost and CO₂
EPA
VersionCityHwyComb.Fuel / yrCO₂ g/mi
Q45
Auto 4-spd, 8 cyl, 4.1 L · Rear-Wheel Drive
162118$4,400494
  • Q45
    Auto 4-spd, 8 cyl, 4.1 L
    16 city · 21 hwy · $4,400/yr
    18
    mpg comb.
Estimate your fuel costCost of ownership
Data from EPA fueleconomy.gov · synced Oct 30, 2026 · Fuel cost is EPA’s annual estimate (15,000 mi, 55% city)
06 —Safety

NHTSA 5-Star Safety Ratings

New Car Assessment Program
NHTSA has not published 5-Star Safety Ratings for the 2001 Infiniti Q45 as of Oct 30, 2026.
Data from NHTSA NCAP Safety Ratings API · synced Oct 30, 2026
07 —Maintenance

Maintenance basics

General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
ItemMilesTimeNote
Engine oil & filter5,000–10,000 mi6–12 monthsFollow the oil-life monitor if fitted
Tire rotation5,000–7,500 miEvery oil changeCheck pressure monthly
Engine air filter15,000–30,000 mi1–2 yearsSooner in dusty areas
Cabin air filter15,000–25,000 mi1–2 years
Brake fluid—2–3 yearsAbsorbs moisture over time
Coolant60,000–100,000 mi5–10 yearsLong-life coolants last longer
Spark plugs60,000–100,000 mi—Iridium/platinum plugs at the long end
12V battery—3–5 yearsHeat shortens battery life
  • Engine oil & filter5,000–10,000 mi
    6–12 months
  • Tire rotation5,000–7,500 mi
    Every oil change
  • Engine air filter15,000–30,000 mi
    1–2 years
  • Cabin air filter15,000–25,000 mi
    1–2 years
  • Brake fluid—
    2–3 years
  • Coolant60,000–100,000 mi
    5–10 years
  • Spark plugs60,000–100,000 mi
    —
  • 12V battery—
    3–5 years
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
09 —FAQ

2001 Q45 questions

How many recalls does the 2001 Infiniti Q45 have?

1 safety recall as of Oct 30, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.

What are the most common 2001 Infiniti Q45 problems?

Owners filed 4 complaints with NHTSA. The most-cited components are electrical system (2), child seat (1), vehicle speed control (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.

What MPG does the 2001 Infiniti Q45 get?

The EPA rates the 2001 Infiniti Q45 at 18 mpg combined, depending on engine and drivetrain (1 version rated).

Data from NHTSA & EPA · synced Oct 30, 2026