| 1 | 0 | 3 | 4 | 3 | 4 |
2012 Hyundai Sonata repairs by problem area
Engine (20%)
Transmission and Drivetrain (12%)
Brakes and Traction Control (5%)
Suspension and Steering (18%)
Electrical and Air Conditioning (26%)
Paint, Rust, Leaks, Rattles, and Trim (11%)
Other (7%)
Chart based on 163 repairs.
2012 Hyundai Sonata engine repair cost distribution
$2500+ (6%)
$1000 - $2499 (0%)
$500 - $999 (0%)
$100 - $499 (16%)
< $100 (77%)
Chart based on 31 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2012 Hyundai Sonata 4dr Sedan
turbocharged 274hp 2.0L I4 6-speed shiftable automatic FWD
| 50300 mi | Exhaust pipe came out of place. |
| 6200 mi | Turbo Waste Gate out of adjustment. Intermittent problem with Turbo not working. Code hard to catch. Bought my own OBD2 diagnostic tool to catch the code. Once caught the dealer fixed it. Car without turbo runs like it has 50 hp |
| 65720 mi C $460 |
When accelerating briskly on highway on-ramp, the engine power suddenly dropped. No outward indication of problem (no check engine), except reduced power. I guessed turbo leak (wastegate stuck open), but dealer reported a crack in intercooler. Despite being no longer covered under warranty, Hyundai Canada offered to pay for replacement parts. I paid labour (4 hours) |
| 29000 mi | Turbo charger wastegate needed adjustment |
| 29800 mi | Clip holding wastegate rod broke and needed to be replaced. Was not correctly fixed earlier |
| 36000 mi | Turbocharger exhaust clamp broke. Lost boost. Dealer replaced under warranty |
| 51000 mi | Computer wasn't calculating fuel mixture correctly so turbo failed to engage. Didn't affect ability to drive. Quick diagnosis and fixed under warranty. |
| 73000 mi US $270 |
Turbo Oil Return line was leaking. Turbo was making whining noise and continued even after the repair. Oil failure appeared imminent. |
| 88000 mi | Check engine light was on. I obtained malfunction code using a code reader. I adjusted the exhaust waste gate actuator (for engine turbocharger) to achieve factory specified sensor voltage. Reset check engine light. It has not come back on. |
| 51000 mi | Oil pan leaking |
| 82000 mi | Start button would intermittently work, traded car in for 2016 Hylander |
| 22400 mi | It was a TSB issue with the turbocharger. |
2012 Hyundai Sonata 4dr Sedan
198-horsepower 2.4L I4 6-speed shiftable automatic FWD
| 76000 mi | Recalled Engine Issue. Great service and didn't cost anything. |
| 132000 mi | Internal engine failure. Main engine replaced with remanufactured unit. Covered by Hyundai due to the Theta II engine lawsuit |
| 72000 mi US $40 |
Oil change |
| 60900 mi | The car needed a valve cover gasket, a new battery, and a serpentine belt, along with a cleanup. Labor is not cheap! |
| 40000 mi | High pressure fuel pump problem causing engine to not idle or drive properly. RPMs dancing up and down. |
| 53000 mi | Complete engine replacement. Rod Knock...blew a rod. |
| 63700 mi | Camshaft locked up and damaged the engine. Under warranty, they replaced a whole engine. |
| 58100 mi US $350 |
Replace high pressure fuel pump |
| 6400 mi | Heater hose was improperly installed at the factory. Service manager said the he has seen a number of this repairs for this model of Sonata. |
| 39000 mi | Loose heat shield. Repaired |
| 122000 mi US $2500 |
Engine failed. Dealer reports water in the fuel. Unable to repair |
| 133000 mi US $300 |
Fuel pump was replaced |
2012 Hyundai Sonata 4dr Sedan
166-horsepower 2.4L I4 Hybrid 6-speed shiftable automatic FWD
| 19420 mi | Check engine lighted up for an OCV valve malfunction. Valve was removed, cleaned and reinstalled. |
| 25420 mi | Stuck OCV valve. Replaced with new valve. |
| 32240 mi C $240 |
HGS belt was slipping when the car started the gas engine. Most of the time, this happened when the car went from electric mode to gas or combined gas+electric. |
| 77000 mi US $8000 |
Main bearing failure required replacement of entire engine. |
| 46000 mi | Check engine light came on again, on a previous routine service visit, they said it was because I had the car 'on' while filling gas, but I didn't do that this interval. Cleared the code, and the light came back in about 500 miles. |
| 47000 mi | Emissions canister was malfunctioning, causing the check engine light to come on, repaired for free under warranty/ |
| 64000 mi US $175 |
EV system scanned for EV failure alert. System scanned no fault detected. Dash shoes EV failure intermittently Car will start after 30 min. Update: problem later disappeared by itself. |
| 3000 mi US $25 |
Poor than average gas millage in winter months |
2012 Hyundai Sonata 4-door
4-cylinder manual 2WD
| 28000 mi | Fuel pump broke |
See TrueDelta's information for all Sedans
See TrueDelta's information for all Hyundai models.
