2003 Toyota Prius

Family: Prius · filed with NHTSA as PRIUS

Summary

Of the 97 complaints that name a component, 40% concern Steering (39).
These are complaint counts, not failure rates: they are not divided by how many cars were sold, because no public source reports U.S. sales by model year.
Not enough history to compare this year with the rest of its generation.
1 recall filed for this model year.
1 federal defect investigation covers this model year.

At a glance

Owner complaints: 99
Recalls: 1
Investigations: 1
NCAP overall: Not rated
Combined MPG: 41
Annual fuel cost: $1,500
Median mileage at complaint: 71,000 mi (n = 81)
Crashes / fires / injuries / deaths: 5 / 0 / 5 / 0

What owners report

Steering

39 complaints · 40% of complaints that name a component · median 85,000 mi (n = 34)

Owner report The contact owns a 2003 Toyota Prius. The contact stated that while driving at 65 MPH, the steering wheel began to vibrate with an unknown message displayed on the instrument panel. As the failure persisted, the message disappeared, and the contact was able to drive to her destination. Upon restart of the vehicle, the …

Owner report IT'S MOSTLY WHEN I'M TURNING RIGHT THE POWER STEERING WARNING LIGHT WILL COME AND THERE WILL BE NO POWER STEERING. I HAVE SEE A LOT OF COMPLAINTS WITH THE SAME PROBLEM. SOMETIMES AS I WAS DRIVING IN THE CITY OR JUST AS I'M STARTING TO DRIVE

Brakes

16 complaints · 16% of complaints that name a component · median 83,000 mi (n = 15)

Owner report OCCASIONALLY, WHEN BRAKING, THE CAR WILL BEGIN TO BRAKE, THEN LURCH FORWARD A LITTLE, AND THEN BRAKE AGAIN PROPERLY. IT'S DISCONCERTING AT BEST AND SCARY AND DANGEROUS AT WORST. I'VE HAD THIS BRAKE PROBLEM FOR YEARS BUT FINALLY REALIZED THAT IT'S A SIGNIFICANT TOYOTA FLAW WITH THE ABS, AND THAT NEWER PRIUSES AND LEXU…

Owner report THE VEHICLE WOULD NOT COME TO A STOP WHEN THE BRAKES WERE APPLIED. AN ALARM/LIGHT INDICATOR CAME ON FOR ABS BRAKES AT THE SAME TIME. I HAD TO APPLY THE EMERGENCY BRAKES FOR THE VEHICLE TO COME TO A STOP. I WAS ABLE TO AVOID TWO VEHICLES AND CAME TO A STOP IN THE BUS STOP AREA. THE VEHICLE WAS TOWED FOR REPAIR BUT T…

Electrical System

13 complaints · 13% of complaints that name a component · median 108,000 mi (n = 9)

Owner report 2003 TOYOTA PRIUS HAD 12V BATTERY REPLACED UNDER TOYOTA TSB EL014-03 "BATTERY CAPACITY IMPROVEMENT" INSTRUCTIONS WERE OMITTED AS WELL AS NOT FOLLOWED. CAR WAS DRIVEN FOR APPROX. 2 WEEKS WITH BATTERY NOT VENTED OUTSIDE PASSENGER COMPARTMENT AND NOT PROTECTED FROM DAMAGE BY HEAVY OBJECTS IN TRUNK. WAS CORRECTED BY ME …

Owner report FOR NO APPARENT REASON WHEN DRIVING, THE EMERGENCY BRAKE WILL ENGAGE, WITHOUT PRESSING THE E BRAKE PEDAL. ALSO, INTERMITTENT ONCE CAR IS PARKED AND DOORS LOCKED, ALARM WILL JUST START GOING OFF FOR NONREASON.

2% of complaints name no specific component and are left out of the shares above.

Across the generation (2001–2003)

To compare years fairly, each year is counted over the same span: complaints received up to two calendar years after its model year. A year is compared only when that span is over and it holds at least 50 complaints.

Model year	All complaints	First three years	Note
2001	165	45	not compared
2002	167	36	not compared
2003	99	20	not compared

Recalls

Whether a recall has been fixed on a specific car depends on its VIN; check it at nhtsa.gov/recalls.

11V304000 · STEERING:ELECTRIC POWER ASSIST SYSTEM

Filed 2011-06-01 · 52,377 vehicles

Defect: TOYOTA IS RECALLING CERTAIN MODEL YEAR 2001 THROUGH 2003 PRIUS PASSENGER CARS MANUFACTURED FROM JANUARY 28, 2000, THROUGH MAY 30, 2003. THE STEERING LINKAGE MAY LOOSEN, RESULTING IN REDUCED ELECTRIC STEERING ASSISTANCE WHEN MAKING A LEFT TURN.

Risk: LOSS OF POWER STEERING, PARTICULARLY WHEN AN OPERATOR IS ACTIVELY INTENDING TO STEER THE VEHICLE, MAY INCREASE THE RISK OF A CRASH.

Remedy: TOYOTA WILL NOTIFY OWNERS AND DEALERS WILL REPLACE THE NUTS IN THE STEERING LINKAGE FREE OF CHARGE. THE SAFETY RECALL BEGAN ON JULY 8, 2011. OWNERS MAY CONTACT TOYOTA AT 1-800-331-4331.

Federal investigations

Action	Component	Opened	Closed	Recall
DP22005	ELECTRICAL SYSTEM:PROPULSION SYSTEM	2023-01-27	2023-08-07	22V063000

DP22005: Pedestrian alert sounds

Engines and fuel economy

Version	Engine	Transmission	Drive	City	Hwy	Combined	Fuel cost / yr
Prius	1.5L 4cyl Hybrid	Automatic (variable gear ratios)	Front-Wheel Drive	42	41	41	$1500

Fuel cost is EPA's estimate at the fuel prices of its last update, not today's.

Crash test ratings (NCAP)

Variant	Overall	Frontal	Side	Rollover
2003 Toyota Prius 4-DR.	Not Rated	Not Rated	Not Rated	Not Rated

Service bulletins

Toyota issued 133 service bulletins listed against this model year, most often about equipment.

A bulletin tells dealers how to fix a known condition. It is not a recall and not a defect finding. Most bulletins cover several model years at once, so one listed here may not be specific to this year. The number of bulletins tracks how long and how widely a model was sold, so it is not a measure of reliability.

Date	Component	Summary
2026-02-13	ENGINE	OBSOLETE NOTICE February 13, 2026: This bulletin is now obsolete. Please see T-SB-0009-26.
2026-02-13	ENGINE	This bulletin includes basic procedures for performing a rescue charge on Ni-MH high voltage (HV) batteries. This bulletin should be used in conjunction with the applicable model and model year Repair Manual while performing a rescue charge…
2024-12-06	STRUCTURE:BODY	Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere. If these acidic compounds settle on an exposed vehicle, especially the horizontal areas such as the hood…
2024-12-06	STRUCTURE:BODY	To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover. The purpose of the wheel film is to shield the disc brake rotor from weather elements and in…
2024-12-06	STRUCTURE:BODY	The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicl…
2024-12-05	STRUCTURE:BODY	Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal painted surfaces. This material protects from acid rain, environmental fallout, and rail contamination. Follow the Removal Procedure …
2024-12-03	STRUCTURE:BODY	Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad tracks, train wheels, exposure to heavy machinery facilities, grinding, welding, etc. This type of contamination can be identified by the …
2024-07-12	STRUCTURE:BODY	Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere. If these acidic compounds settle on an exposed vehicle, especially the horizontal areas such as the hood…
2024-07-12	STRUCTURE:BODY	To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover. The purpose of the wheel film is to shield the disc brake rotor from weather elements and in…
2024-07-12	STRUCTURE:BODY	The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicl…

How to read this page

Complaint counts are not failure rates. A model that sells more cars draws more complaints, and owners file more often after news coverage or a recall. That is why this page compares a model year only with other years of the same generation, never with other models.

Each complaint is counted once, even when it names several components; a complaint that names several systems appears under each of them. Owner reports are quoted as filed and have not been verified by NHTSA or by us.

Every model year of this Prius, including the ones without a page of their own, is listed on the Toyota Prius model page.

Sources

NHTSA Office of Defects Investigation: complaints, recalls and investigations (bulk files, data as of 2026-10-28).
NHTSA New Car Assessment Program: crash test ratings.
U.S. EPA / DOE fueleconomy.gov: engines, transmissions and fuel economy.

MotorAlmanac is independent and not affiliated with NHTSA, EPA or any manufacturer. This page summarises public records; it is not a mechanical inspection. Before buying a used car, check its VIN for open recalls and have it inspected.