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Reliability indicates how models have performed in the past, providing the basis for predicting how the vehicles will hold up in the year ahead. These charts provide the most comprehensive reliability information available to consumers. Based on information received from our latest subscriber survey, our reliability history charts give you a rundown on how used vehicles are holding up in 17 potential trouble spots, ranging from the engine, transmission, and brakes to power equipment and the electrical system.
The Reliability score is based on our latest subscriber survey of 2003 Toyota Avalon owners. The owner comments describe problems respondents experienced with this vehicle.
Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
"My car spent its first several years in Chicago, dealing with winters there. So it has had several rust problems underneath because of that."
Anonymous, CA (2003 Toyota Avalon 3.0-L V6)"Replace Radiator"
Anonymous, CA (2003 Toyota Avalon XLS 3.0-L V6)Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
"Water entry from right front door on passenger floor. The rubber seal drain holes at bottom of door were clogged resulting in water entry from the door. In addition, someone tried to open this door with force resulting top backend of window frame to be bent out. Forcing the door frame back in. The leak problem was resolved."
Anonymous, CO (2003 Toyota Avalon XL 3.0-L V6)AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
"compressor had to be replaced."
Anonymous, AL (2003 Toyota Avalon XLS 3.0-L V6)Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.
"Neutral Safety Switch Stopped Functioning correctly. I was able to raise the car, remove the left front tire to gain access to the switch. Then i sprayed the switch three or four times until it started functioning again. Knock on wood it has been working okay for awhile now. When good weather gets here I will probably change it. Although it is $140 for a new switch."
Anonymous, NY (2003 Toyota Avalon XLS 3.0-L V6)Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.
Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.
Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
"Started it up one day and when put in gear, made the horrible rattling noise. Had it towed to repair shop and had it fixed. Did not know what the problem was, that's why I had it towed."
Anonymous, WI (2003 Toyota Avalon XLS 3.0-L V6)