There are 13 stored owner reports matching the brakes leading-label group for the 2003 Hyundai Sonata in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 13 of 13 matching reports.
Open the full vehicle complaint log (all categories)THE BRAKE PEDAL DROPS DURING BRAKING WITH A CLUNK. THE BRAKES ARE WEAK AT THAT POINT BUT RECOVER. I REPLACED THE BRAKE PADS AND ROTORS AND MASTER CYLINDER, STILL THE SAME PROBLEM. IT HAPPENS A LOT. MY WIFE WON'T DRIVE THE CAR ANYMORE.
METAL BRAKE LINES TO REAR BRAKES RUSTED OUT CAUSING BRAKES TO FAIL. *TT
OVER THE PAST YEAR, WHILE TRAVELING AT VARIOUS SPEEDS, IN VARIOUS WEATHER CONDITIONS MY BRAKE PEDAL VERY SPORADICALLY WILL NOT DEPRESS. THE PEDAL IS SOLID AND WILL NOT MOVE/RESPOND FOR BETWEEN 1 AND RECENTLY UP TO ABOUT 6 SECONDS, WHICH IS A LIFETIME WHEN YOU ARE TRYING TO STOP A CAR AT 55 MPH. TWO AUTO SHOPS HAVE DRIVEN THE CAR AND CAN NOT RECREATE OR DIAGNOSE THE ISSUE. BASED ON MY OWN RESEARCH, I FINALLY RESIGNED TO HAVE THE MASTER CYLINDER REPLACED. HOWEVER, WHILE THE MECHANIC WAS REPLACING THE MC HE NOTICED THAT THE VACUUM HOSE HAD A METAL CLAMP NEAR THE MC END AND THE CLAMP HAD SHIFTED DOWN THE HOSE. INSIDE THE HOSE, WHERE THE CLAMP HAD BEEN, THERE APPEARED TO BE A SPRING LOADED VALVE, POSSIBLY AN INTERNAL CHECK VALVE, WHICH WAS NOW "LOOSE" IN THE HOSE. IT SEEMS THAT IF THE CLAMP IS IN FACT KEEPING THE VALVE IN PLACE AND IT SLOWLY DRIFTS OVERTIME THIS PROBLEM IS SOMETHING THAT WOULD ONLY APPEAR WITH OLDER CARS. ALSO, I'VE SEEN REPORTS ON INTERNET FORUMS WHERE OTHERS HAVE DESCRIBED THE SAME BRAKE PROBLEM, HOWEVER THERE IS NO RECALL LISTED FOR THIS ISSUE. I DON'T KNOW HOW MANY INCIDENTS NEED TO BE REPORTED BEFORE ACTION IS TAKEN, BUT AS THIS IS A LIFE-THREATENING PROBLEM I WOULD HOPE YOU TREAT IT WITH URGENCY AND INVESTIGATE IT FULLY. *TR
HAD PROBLEMS WITH THE BRAKES FOR OVER A YEAR NOW. HAD BOTH FRONT BRAKES REPLACED COSTING ABOUT $200. THEY STILL SQUEAK WHEN TURNING THE WHEEL , AND SOMETIMES WHEN DRIVING. ALSO, PANT HAS COMPLETELY COME OFF THE DOOR HANDLES, AND THERE WAS RUST ON DIFFERENT SPOTS OF THE CAR HOOD. I HAD THE DOOR HANDLES REPLACED INSIDE THE CAR BECAUSE THE SILVER WAS PEELING, CAUSING US TO CUT OUR HANDS, BUT THAT DIDN'T COST ME ANYTHING. *AK
2003 HYUNDAI SONATA, RIGHT REAR DISC BRAKE BROKE AT 24,000 MILES - WE HAD THE VEHICLE TOWED TO THE DEALER AND WE WERE TOLD THAT BECAUSE WE DID NOT HAVE THE CAR SERVICED AT THE DEALER THAT THE WARRANTY WAS VOID - VEHICLE HAD BEEN SERVICED EVERY 5000 MILES PLUS A YEARLY NY STATE INSPECTION PERFORMED - THE DEALER ADVISED THAT BECAUSE THERE WAS A SERVICE BULLETIN ISSUE TO HAVE THE BRAKE 'SLIDERS' GREASED EVERY 15,000 MILES THAT THE WARRANTY WAS VOID - OUR SERVICE MANUAL FOR OUR VEHICLE DOES NOT STATE THAT THIS IS NEEDED - THE ON LINE SERVICE INFORMATION DIRECT FROM HYUNDAI DOES NOT INDICATE THAT THIS IS NEEDED NOR IS IT EVER RECOMMENDED TO HAVE THAT SERVICE DONE - THE DEALER SAID THAT WE WERE TO BLAME BECAUSE WE FAILED TO HAVE THE BRAKE 'SLIDERS' GREASED EVEN THOUGHT IT IS NOT MENTIONED OR RECOMMENDED ANYWHERE THAT ANY MEMBER OF THE PUBLIC CAN VIEW. *JB
DT: THE CONTACT'S WIFE OWNS A 2003 HYUNDAI SONATA. THE CONTACT STATED THAT THERE WAS PROBLEM WITH THE BRAKING SYSTEM. SHE HEARD NOISES, BUT THOUGHT IT WAS NOISES COMING FROM THE ROADWAY. THE FIRST TIME THE VEHICLE EXPERIENCED BRAKE PROBLEMS WAS AT 13,873 MILE. , THE SERVICE DEALER STATED THAT THE ROTORS WERE GLAZED AND HAD HOT SPOTS ON THEM. THE SERVICE DEALER TURNED THE ROTORS WITHOUT THE CONTACT'S KNOWLEDGE. THIS DID NOT REMEDY THE PROBLEM. AT 28,000 MILES, THE CONTACT HEARD A LOUD NOISE, SUCH AS AN AIRPLANE GOING OVER THE VEHICLE. THE CONTACT TOOK THE VEHICLE TO THE DEALER. THEY STATED THAT IT WOULD BE APPROXIMATELY $25.00 PER WHEEL TO INSPECT THE VEHICLE TO DETERMINE THE CAUSE OF THE PROBLEM. THE CONTACT TOOK THE VEHICLE TO DEALER, WHO HAD LUBRICATED THE FRONT BRAKE SLIDES AND REPLACED THE REAR BRAKE PADS. THIS DID SEEM TO HAVE FIXED THE PROBLEM. THE CONTACT WAS GOING TO TAKE THE VEHICLE TO DEALER TO HAVE THE 30,000 MILE ROUTINE MAINTENANCE PERFORMED TO MAKE SURE THAT THERE WAS NO LONGER A PROBLEM WITH THE BRAKES. THE CONTACT CONTACTED THE MANUFACTURER, AND THEY HAVE AGREED TO REIMBURSE THE CONTACT FOR THE REPAIRS.*AK
THE CONSUMER'S HYUNDAI SONATA DEVELOPED THE FOLLOWING PROBLEMS: THE PAINT WAS PEELING, THE SUN ROOF WAS BROKEN, THE PASSENGER SIDE WINDOW WAS INOPERATIVE, THE BRAKES FAILED, THE SEATBELT BROKE, THE ENGINE BLEW UP AND THE AIR BAGS FAILED TO DEPLOY. *MR THE ENGINE SURGED. AS A RESULT OF THE ENGINE BLOWING, THE RIGHT SIDE DISINTEGRATED. *SC *JB
WHILE DRIVING 55 MPH CONSUMER APPLIED THE BRAKES AND VEHICLE CONTINUED TO SPEED. DRIVER WAS ABLE TO MAINTAIN CONTROL OF THE VEHICLE, AND DROVE THE VEHICLE TO THE DEALER FOR INSPECTION. MECHANIC COULD NOT RESOLVE THE PROBLEM.*AK
BRAKE ROTORS VIBRATED VIOLENTLY WHILE DRIVING . *AK
WHEN APPLYING THE BRAKES VEHICLE BOUNCES AND SHAKES. DEALER STATES ROTORS ARE WARPED. *AK
I PURCHASED A 2003 DEMO HYUNDAI SONATA IN SEPTEMBER OF 2003. APPROXIMATELY 1 MONTHS AFTER TAKING DELIVERY I EXPERIENCED A HESITATION UPON ACCELERATION AND A FEELING AS IF THE CAR WAS GOING TO STALL WHILE DRIVING. I TOOK THE CAR IN TO HAVE IT CHECKED BY THE DEALERSHIP. I WAS TOLD THAT THEY COULD NOT FIND A PROBLEM. APPROXIMATELY 2 MONTHS INTO OWNERSHIP I EXPERIENCED A LOAD NOISE WHEN TURNING AND IT WAS DIFFICULT TO TURN. I TOOK THE CAR INTO THE DEALERSHIP AND MY RACK AND PINION STEERING WAS SHOT. THEY REPAIRED THE PROBLEM BUT THERE IS STILL A CLICKING NOISE WHEN I TURN THE CAR. I HAVE HAD THE CAR FOR APPROXIMATELY 8 MONTHS AND I AM NOW EXPERIENCING A STRONG VIBRATION UPON APPLYING THE BRAKES. I TOOK THE CAR TO AN INDEPENDENT DEALERSHIP AND HAD THE BRAKES INSPECTED. I WAS TOLD THAT I NEED NEW PADS AND ROTORS ALL THE WAY AROUND. I SAID THE CAR IS FAIRLY NEW AND I SHOULD NOT BE NEEDING NEW BRAKES ALL THE WAY AROUND JUST YET. I HAD THE CAR TAKEN TO THE DEALERSHIP AND WAS TOLD THE BRAKES ARE NOT COVERED UNDER WARRANTY. AFTER VIEWING CARSTATS WEB SITE I BECAME AWARE THAT OTHERS ARE EXPERIENCING THE SAME PROBLEM WITH THE BRAKES AS WELL AS WITH THE HESITATION AND THE FEELING AS IF THE CAR IS ABOUT TO STAHL. THE PROBLEMS THAT I AM HAVING ARE MULITFACETED, WHAT RECOURSE DO I HAVE AS A CONSUMER?*AK
WHEN THE BRAKES WERE APPLIED, THE VEHICLE EXPERIENCED A HEAVY VIBRATION, THE DEALER INSPECTED THE VEHICLE 3 TIMES AND WAS UNABLE TO DETERMINE THE CAUSE. *JB
AT A STOP LIGHT WHEN CONSUMER PUT HIS FOOT ON THE BRAKE, THE BRAKE PEDAL WENT TO THE FLOOR. THIS OCCURRED AT LEAST FOUR TIMES. THE FIRST TIME WHEN THIS HAPPENED VEHICLE HAD LESS THAN 200 MILES ON IT. DEALER INFORMED THE CONSUMER THAT THERE WAS LOST OF VACUUM TO THE POWER BOOSTER. THE CAUSE WAS A BLOCKAGE IN THE VACUUM HOSE. THE MANUFACTURER WAS INFORMED OF THE PROBLEM.*AK *JB
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.