2010 Hyundai Sonata Problems

What owners report

Owners of this model year most often report exterior door handles breaking or coming off in normal use, a complaint that appears across a very wide mileage range and often more than once on the same car. A smaller but notable group describes engines stalling or seizing with little or no warning at higher mileage, and some report brake pedal fade or a pedal that goes to the floor. Drivetrain complaints are fewer and centre on jerky or delayed shifting, particularly when the transmission is cold.

1. 1
   Body and structure

   Exterior door handles break off or detach

   • 154 complaints (45%)
   • median 65,034 mi at 5.5 yrs old (128 state mileage)
   • owner-quoted repair $400 (median of 7 quotes)
   • filed 2013–2025

   Complaints describe exterior door handles snapping, fracturing or separating from the door when the handle is pulled normally to get in. Several owners report that two, three or all four handles have broken over time, in some cases repeatedly on the same door, and that the door can then only be opened from inside. According to the complaints, dealers replaced handles under warranty in some cases and declined coverage once the car was out of warranty, quoting per-handle repair costs; some owners say the dealer had no explanation for the breakage. A number of owners also raise concern about being unable to open a door from outside in an emergency. Reported from under 20,000 miles to well over 100,000 miles, with many complaints filed between roughly 60,000 and 90,000 miles; several mention cold weather when the handle failed.

   1 related service bulletin

   What to check: Open and close every door several times from the outside and look closely at the handle and its end cap for cracks or looseness; ask the seller whether any handles have already been replaced. Replacement handles are a recurring cost, so factor that in.

   2 excerpts from owner complaints in NHTSA records

   “As I was trying to get into my car at 7:20 am on 02/24/15 the driver side door handle just fell off the door. The temperature was below zero and it was a surprise to see that happen to a 5 year old car!!!! I called the dealership to see if there is a recall or problem they know of regarding the door but turned with nothing. …”

   NHTSA complaint #10690269, filed 2015-02, 82,311 miles

   “I have had numerous issues of continually broken door handles for my 2010 Hyundai Sonata. Three of the four handles have broken since 2012 and one has broken twice. To date I have visited two dealerships at 8 times in total for these handles breaking. I was told by the service technicians that there is a plastic piece inside the handle as well as end cap that keeps breaking. Invoices are available upon request.”

   NHTSA complaint #10648774, filed 2014-10, 34,200 miles
2. 2
   Engine

   Engine stalls or seizes with little warning

   • 29 complaints (8%)
   • median 64,500 mi at 7.0 yrs old (24 state mileage)
   • 2 mention a crash, fire or injury
   • filed 2010–2025

   Complaints describe the engine quitting while driving, sometimes at highway speed, and in several cases not restarting afterwards. Owners report being told by a mechanic or dealer that the engine had seized, with one complaint stating the diagnosis was a motor seized from lack of oil and another describing a connecting rod coming through the block. Some owners say maintenance was up to date and that no warning light appeared beforehand; others describe a check engine light and repeated diagnostic visits before the failure. Mostly reported between roughly 70,000 and 120,000 miles, though a few complaints come in earlier and one past 125,000 miles.

   3 related service bulletins

   What to check: Check the oil level and condition and ask for oil change records, since some complaints tie the failure to low oil; a service bulletin describes an oil consumption inspection and a connecting rod bearing clearance test. Listen for knocking and have any check engine light read before buying.

   2 excerpts from owner complaints in NHTSA records

   “As I was driving on the freeway my car which was on cruise control. The car went from 60-50-40-30 within 30 seconds while it still said cruise control was on and the gas and brakes didnt work. I had to pull over to the side of the road. The electronics still work but the car no longer work and did not turn on. It seized while I was driving. No warning lights, no check engine light, no gas light, absolutely no warning before the car seized.”

   NHTSA complaint #11341411, filed 2020-07, 126,454 miles

   “Car has only 77,000 miles and was well maintained. On august 27, I had driven the car late afternoon, parked. Later after a couple of hours when I went to start it, it would not start, jump start did not work. Mechanic replaced the starter and still would not start. He checked the engine and told me that the engine has seized. I took it to the Hyundai dealer who confirmed that engine has seized. I contacted Hyundai as the complaint is similar to other car engines that seized when driven between 60,000 and 90,000 miles. …”

   NHTSA complaint #11353067, filed 2020-09, 77,000 miles
3. 3
   Brakes

   Brake pedal fades or fails to respond

   • 29 complaints (8%)
   • median 66,450 mi at 4.2 yrs old (24 state mileage)
   • 4 mention a crash, fire or injury
   • filed 2011–2023

   Complaints describe the brake pedal sinking toward the floor or failing to slow the car when pressed, in one case after highway driving in stop-and-go traffic and in another at 60 mph, where the driver put the car in neutral to stop it. One owner reports repeated pad, rotor and caliper replacement, and another was told that calipers on both rear wheels had frozen and a front caliper was sticking. Dealers and shops are described as replacing calipers, rotors and pads or, in some complaints, not diagnosing the problem at all. Reported between roughly 39,000 and 87,000 miles; several complaints describe the pedal fade appearing after sustained highway driving or in stop-and-go traffic.

   2 related service bulletins

   What to check: Ask when the brake fluid, pads, rotors and calipers were last serviced, and check for fluid weeping around the calipers. On a test drive, include several hard stops from highway speed and note whether the pedal stays firm.

   2 excerpts from owner complaints in NHTSA records

   “I have had to replace the brake pads three times. Replaced rotors front and rear. Replaced calipers on rear and repaired the fronts. 87000 highway miles. Transmission hard shift from new. Dealer states that they have never heard of any trouble like this.”

   NHTSA complaint #10682322, filed 2015-02, 87,357 miles

   “After driving on highway and then slowing for traffic which became stop and go traffic - the brake pedal started slowly fading all the way to the floor. After coming to a stop and pumping the pedal - the brakes seemed to respond but then the same issue repeated - had to have the car towed and discovered that the calipers had frozen on both rear wheels (wheels would not turn freely by hand when car was on lift) and the front right caliper was becoming tight as well. Repair involves new calipers, rotors and pads for all 4 wheels.”

   NHTSA complaint #10849659, filed 2016-03, 87,000 miles
4. 4
   Transmission and drivetrain

   Hard or delayed transmission shifting

   • 24 complaints (7%)
   • median 60,050 mi at 3.1 yrs old (21 state mileage)
   • 1 mention a crash, fire or injury
   • filed 2010–2023

   Complaints describe harsh or jerky shifting, including a hard downshift from third to second with a rise in engine speed while slowing to about 20 mph, and a car that jerks forward when the brake is applied. One owner reports rough shifting since the car was new and another says the car rolls backward on an incline while in Drive. According to the complaints, dealers reset computer values, said a new transmission might be needed, or told the owner the behaviour was normal for the design. Reported from the first few hundred miles on some cars up to past 150,000 miles; several complaints note the harshness is worse when the transmission is cold and eases once warmed up.

   3 related service bulletins

   What to check: Drive the car from a cold start and include stops from about 30 mph, watching for a clunk or lurch on downshift. Ask whether any transmission software update or adaptive relearn has been performed.

   2 excerpts from owner complaints in NHTSA records

   “Hyundai Sonata 2010 v6 sedan rolls backwards on incline when in drive. Basically goes into freefall in time it takes to put foot from brake to accelerator. Also steering is very swimmy. Tend to over or under steer and lots of sway in chasis when turning or changing lanes at high speeds on freeway. Have taken to dealer multiple times and told it is the way it is designed. Sounds flawed to me.”

   NHTSA complaint #10422804, filed 2011-08, 500 miles

   “When the transmission is cold, while driving and slowing down to 20 mhp the card jerks, hard downshift from 3rd to 2nd, and RPM increase by several hundred rps. Once the transmission warms up, issue mostly goes away. Issue started this year. Second issue is the white paint easily comes off all over the car, even just from hosing the car with water. Issue has been going on for several years. Its happening all over the car payment. Dealership said they have not seen the issue before, however I see alot of owners with white color have this issue. …”

   NHTSA complaint #11348953, filed 2020-08, 135,000 miles

Buying note. Door handles are the most common complaint on this model year and can break repeatedly, so inspect all four carefully and budget for replacements. On a test drive, check for a firm brake pedal and smooth cold shifts, and confirm the oil level and service history before buying.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.