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Chart based on 80 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2006 Hyundai Sonata
Engine not specified
75000 mi
needed left bank o2 sensor replaced. Also need to check suspension
76000 mi
US $365
Had issues with check engine light and car stalled out. Dealer diagnosed throttle body bad and owner paid cost of replacement.
77000 mi
Surging remained. New spark plugs end fix.
60000 mi
car currently in garage for the 6th heater core failure and no cause for problem found. Hyundai not addressing this Lemon problem properly. Car is totally unreliable for trips
Three motor mounts were busted and transmission mount was starting to fail. Replaced all four mounts.
54700 mi
front O2 sensor
59700 mi
rear O2 sensor
106000 mi
US $300
Replaced spark plugs and cleaned injectors. Latter was preventive.
39060 mi
Throttle Position Failed and vehicle could not be driven.
99200 mi
C $442
Oil leak, valve cover gaskets replaced.
33000 mi
Engine sometimes loses power under full-throttle acceleration. Check Engine, ABS and ESC lamps lit. ABS and ESP lamps go off after restart, and engine power is restored. Check Engine lamp goes off after multiple restarts. Dealer claims OBD has no codes.
48200 mi
Replaced harmonic balancer.
77000 mi
US $100
Leaking valve cover.
181000 mi
US $98
This is the seventh time since April 2010. My Sonata still exhibits the same identical problem with the engine intermittently shutting off without warning. The dealer just reset the ECU.
37200 mi
C $775
car would not start and flooded itself
40920 mi
C $453
Vehicle would not start and was flooded. they had to clean plugs and checked the systems. New battery was installed
127000 mi
Valve gasket leaks a bit of oil on to alternator. Mechanic said I don't need to repair at this time. Update: unclear if still leaking when sold, would have had to clean engine to find out.
54300 mi
US $600
Gasket Leak
83000 mi
US $350
O2 sensor went bad
94000 mi
I twice tried to get my dealer to deal with the ticking and rattle coming from the engine.
14200 mi
US $100
Check Engine Light on...replaced 1 Oxygen Sensor. After getting car back, next day, check engine light blinking. Car towed to dealer. Per dealer replaced a second Oxygen Sensor.
76000 mi
US $466
Harmonic balancer was about to fall off. It was damaged and had to be replaced.
118100 mi
US $3000
Engine mount
112000 mi
US $280
The cam position sensor needed to be changed.
131200 mi
US $125
The key got stuck in the ignition. I had to get a locksmith.
112000 mi
new tensioner pulley thermostat housing replaced. seems after 100,000 miles car is falling apart under normal driving situation.
28000 mi
US $3000
Timing chain broke & blew the engine; oil changed every 3k ml. Had oil change 5 days before this @ Tarbox Hyundai RI - was told no current problems w/car. Ordered used engine online & had private service station replace it.
92000 mi
US $458
Charging light kept coming on and when checked was told that the alternator was not charging. The alternator was replaced and the shop advised that leaking oil caused the failure. Gasket still to be replaced to stop oil leak
81000 mi
US $500
Throttle assembly had bad sensors and had to be replaced. There were two other problems:Brake light switch and air bag sensor. The air bag problem was covered by warranty
62000 mi
US $600
Left front valve gasket cover brittle and leaking oil into alternator. Discovered when brought in to have spark plugs replaced at 107,000 miles (spark plug removal requires removing the intake manifold)
118000 mi
Car died today without warning while driving . Thought it was alternator, but wasn't that. Crankshaft won't even manually turn. Plenty of oil, battery good. Won't repair or replace engine due to high mileage and cost.Will junk car.
44100 mi
US $600
Oil leak they had to take engine apart to repair it and reassemble but it was repaired
50000 mi
leak in car; pump replaced engine leak
50000 mi
leak started after shop pulled the engine and then continued after shop pulled the engine again. shop replaced bearing and leak discontinued
27000 mi
Check engine light was comming on also car was bucking and shaking at idle. Two sensors were replaced car seems OK now.
37000 mi
Check engine light on, car runs rough. Dealer cleared code said if it came back they would have to change the coil packs.
37000 mi
Same CEL light comes on dealer refuses to do anything. I contacted BBB and Hyundai"s main office,still waiting. CEL light constantly going on and off also runs very rough.
40000 mi
Cel light on bad coil pack, replaced. Plugs fouled as a result of misfire dealer refuses to do anything about them. Warranty is useless.
40000 mi
bad idler pulley
88000 mi
US $170
Harmonic balancer was coming apart. Also valve covers were leaking oil.
17000 mi
Timing Chain was making noise when engine started Mechanic knew what the problem was when described.
123000 mi
US $287
Replace faulty Throttle Position Sensor.
10000 mi
Engine made "tapping lifter" noise on cold starts. Dealer changed timing tensioner per TSB, but it didn't help much.
25000 mi
Motor mount had popped loose. Made a clunking noise on acceleration. Dealer checked it and tightened the mount. Issue has not come back.
52000 mi
Engine belt tensioner pulley replaced
63000 mi
Gasoline engine sounds like diesel, making a clacking sound, when started cold. Lasts for 15 minutes, and is not simple cold start issue. This has been around for the last 4000 miles. My guess is some valve issue, perhaps no proper lubrication.
64000 mi
US $900
Electronic throttle assembly and related electronics
77000 mi
US $475
Harmonic balancer replaced. Earlier complained to the Service as 'loose belt', but 'could not reproduce'.
105000 mi
US $150
leaking valve cover replaced
19000 mi
Dropped a cylinder. Found corrosion on one coil pack causing the misfire.
24000 mi
Engine not as smooth as when new. Engine harder to start than when new.
15000 mi
Trouble code indicated bad oxygen sensor. Tech found it okay. Needed factory computer connection to fix problem.
59000 mi
Leaking front valve cover gasket. Repaired under 100k powertrain warranty.
41800 mi
Valve cover gaskets and oil pan gaskets were leaking oil.
11000 mi
Car emitted a groaning sound when starting up from first gear. The sound was intermittent and occurred only for a few seconds before the car shifted to second gear. There was a TSB issued, but the technician at the dealer said he could hear no sound.
46000 mi
Check engine light came on & stayed on. Brought car to dealership. The service department could find no reason for light to come on & reset system.
87000 mi
US $300
Replaced bad fuel pump
2700 mi
Hyundai new V6 engine for 2006 had a defect with the timing chain tensor. A service bulletin was issued to resolve the issue under warranty. Dealer opened chain cover section of the engine and installed a newly designed component.
32000 mi
Time chain tensioners
8000 mi
timing chain tensioner replaced as per TSB
46000 mi
US $35
Both valve cover gaskets replaced gas cap replacement
10000 mi
Timing belt problem
16000 mi
Strange noise after starter engaged..dealer said they were aware of this problem.
48000 mi
Faulty upper radiator hose... previous dealership service department did not correct the problem.. new dealership did.
Catastrophic engine failure, subsequent three additional engine repair related repairs.
105000 mi
US $1900
cam shaft gear replaced. Also timing chain
111000 mi
Exhaust pipe leak
86000 mi
Leaking oil
229000 mi
Threw a rod. Totalled the car. I gave it to the junk yard.
24000 mi
Gas gauge read inaccurate readings, Gas tank fuel sensor module replaced.
62000 mi
Engine had a hitch, service engine light came on just before arranged service. Engine continued to hitch and the service engine light came on again!!!
112000 mi
US $164
When trying to start the car it would turn over but not start. After 7-8 attempts I was able to get it going and the engine light turned on. Deposits of carbon and sludge from the PCV system get into the throttle body. Cleaned throttle body.
149000 mi
US $900
They replaced the manifold.
76000 mi
US $300
Timing belt issue, except it was not due for a replacement.
82600 mi
US $400
Had to replace ignition cylinder as the key would often not turn.
113000 mi
US $530
both oxygen sensors became faulty and had to be replaced
65100 mi
Check engine light came on and disappeared several times, then constantly on. Detected code P2187 myself.
Run the car as is and have to find reason. (looked it up - too lean)
94540 mi
New engine code P0455. Not repaired yet for the lack of time.
119040 mi
C $150
Oil pan rusted through, leaked oil. Change of oil pan
Made a weird noise when started. Caused by the timing belt. Hyundai should have recalled. Expensive to fix out of warranty, so I didn't.
66000 mi
US $50
Fuel filler overflow was not working correctly. Pump would not shut off when filling car. Replaced fuel line filter/valve assembly.
72000 mi
Oil pan leak, drain plug also replacement of oil pan and gasket.. upon removal found timing cover leak also replaced under 100,000 miles engine warranty.
63700 mi
US $110
Car taking too long to warm up. Changed thermostat, hopefully takes care of problem.
120000 mi
US $300
Replace flex pipe.
53200 mi
replaced oil control valve, check engine light on, code P0011
28000 mi
A surge had developed while driving at approx 55mph with the cruise control on. The dealer couldn't duplicate it - so no fix (yeah - I wasn't happy).
See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how
frequently 2006 Hyundai Sonata problems occur, check out our car reliability stats.