2004 Toyota Prius Engine And Engine Cooling:engine Problems
NHTSA component category: ENGINE AND ENGINE COOLING:ENGINE · data through 07/14/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How engine and engine cooling:engine ranks on this vehicle
Share of the 610 complaints citing each category; one complaint can cite several. Full breakdown on the 2004 Toyota Prius overview page.
What owners report
“DT: 2004 TOYOTA PRIUS, CONSUMER WAS DRIVING ON HIGHWAY 24 AND THE VEHICLE STOPPED. IT HAD TO BE TOWED. VEHICLE LOST POWER WHILE GOING 60-65…”NHTSA complaint 10124301 — filed 09/16/2005
“DT: TOYOTA PRIUS GAS ENGINE STALLED 3 TIMES, TWICE WHILE DRIVING ON HIGHWAY AND ON RAMP. 1) MAY 13 2004 STALLED IN BUSY INTERSECTION GOING…”NHTSA complaint 10124673 — filed 06/09/2005
“PE05029 2 TIMES THE CAR ENGINE STOPPED FOR NO REASON AT ALL. DASHBOARD LIT UP ENTIRELY. BOTH TIMES THE CAR RESTARTED. EACH TIME, FEWER LIGHTS…”NHTSA complaint 10124409 — filed 06/07/2005
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Engine And Engine Cooling:engine complaints by year filed
Frequently asked questions
Does the 2004 Toyota Prius have engine and engine cooling:engine problems?
Engine And Engine Cooling:engine is the #5 most-reported problem area on the 2004 Toyota Prius: 29 of 610 complaints on file (4.8%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2004 Toyota Prius have in total?
610 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 38 involved a crash, 2 involved a fire, 29 reported injuries, and none reported deaths.
What does NHTSA's engine and engine cooling:engine category include?
NHTSA assigns each complaint to standard component categories; this page reports the ENGINE AND ENGINE COOLING:ENGINE category exactly as NHTSA defines and records it.
