2003 Infiniti M45 Engine Problems

NHTSA component category: ENGINE · data through 07/14/2026

23Engine complaints

17.8%Of all 129 complaints

#2Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How engine ranks on this vehicle

FUEL SYSTEM, GASOLINE65 · 50.4%

ENGINE23 · 17.8%

ELECTRICAL SYSTEM22 · 17.1%

ENGINE AND ENGINE COOLING13 · 10.1%

FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM6 · 4.7%

Share of the 129 complaints citing each category; one complaint can cite several. Full breakdown on the 2003 Infiniti M45 overview page.

What owners report

“WHILE LEAVING AN ENTRANCE RAMP TO MERGE ONTO THE INTERSTATE, THE VEHICLE SUFFERED A COMPLETE AND TOTAL ENGINE POWER LOSS ALONG WITH ITS POWER STEERING…”NHTSA complaint 10887887 — filed 07/22/2016

“THE CONTACT OWNS A 2003 INFINITI M45. THE CONTACT STATED THAT THE VEHICLE RANDOMLY STALLED WITHOUT WARNING. THE MANUFACTURER AND THE DEALER INDICATED THAT THE…”NHTSA complaint 10862550 — filed 05/02/2016

“THE CONTACT OWNS A 2003 INFINITI M45. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 15 MPH, THE ENGINE STALLED WITHOUT WARNING. AFTER WAITING FIFTEEN…”NHTSA complaint 10819262 — filed 01/11/2016

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Engine complaints by year filed

Frequently asked questions

Does the 2003 Infiniti M45 have engine problems?

Engine is the #2 most-reported problem area on the 2003 Infiniti M45: 23 of 129 complaints on file (17.8%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2003 Infiniti M45 have in total?

129 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 0 involved a crash, 0 involved a fire, 0 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.