Recalls: Hyundai CN7 i30 Sedan
Overview
OverviewManufacturers, or importers, issue recalls for defects or faults which have the potential to cause injury. Generally, manufacturers will inform the original buyers if their vehicle is subject to a recall and of the steps required to remedy the defect or fault. Please note that the recalls below (if any) are for Australian-delivered vehicles only. Furthermore, the number of recalls should not be taken as an indication of a model’s reliability or its safety more generally.
Recalls: Hyundai CN7 i30 Sedan
2023 Hyundai CN7 i30 1.6T Sedan: dual clutch transmission software issue
In April 2024, recall campaign 41D037 was issued for 2023 Hyundai CN7 i30 1.6T Sedans. Due to incorrect software being installed in the vehicle, the ‘fail-safe’ mode may not have operated when oil pump faults were detected in the dual clutch transmission. If this occurred, it could lead to a sudden loss of motive power (i.e. drive). A loss of motive power or engine stalling while driving could increase the risk of a collision and injruy to vehicle occupants and other road users. To fix, an authorised Hyundai dealer was to update the vehicle’s software. For the VINs of the recalled vehicles, please see REC-005935.
2024 Hyundai CN7 i30 Sedan 2.0 MPI: EGR valve sensor could short circuit
In June 2024, recall campaign 41D066 was issued for 2024 Hyundai CN7 i30 Sedan 2.0 MPI vehicles. During manufacture, the exhaust gas recirculation (EGR) valve sensor may have been exposed to soldering flux contamination – this could cause a short circuit within the sensor, resulting in a loss of motive power whilst driving. A loss of motive power whilst driving could increase the risk of a collision and injury to vehicle occupants and other road users. To fix, a Hyundai dealer was to inspect and replace the EGR valve sensor. For the VINs of the recalled vehicles, please see REC-005978.
2020-23 Hyundai CN7 i30 Sedan N: potential engine stall and loss of power
In January 2025, recall campaign 41D156 was issued for 2020-23 Hyundai CN7 i30 Sedan N vehicles. Due to a manufacturing defect, the fuel control valve in the high-pressure fuel pump could allow excess fuel to enter the pump. If this occurred, the engine could stall, resulting in a sudden loss of motive power whilst driving. A sudden loss of motive power could increase the risk of a collision and injury to vehicle occupants and other road users. To fix, an authorised Hyundai dealer was to inspect the fuel pump and, if required, replace it. For the VINs of the recalled vehicles, please see REC-006244.
Problems and faults: Hyundai CN7 i30 Sedan
Overview
OverviewThis section identifies potential problems, causes and fixes based on the experiences of owners and repairers, online sources and technical service bulletins. This information is provided solely for reference purposes and AustralianCar.Reviews recommends that only properly qualified persons carry out repairs or modifications. Furthermore, the number of items below should not be taken as an indicator of a model’s reliability or the frequency with which they may occur.
To report a problem or fault to the AustralianCar.Reviews team, please use the Contact Us form. Note that AustralianCar.Reviews does not offer advice on automotive problems or disputes; such enquiries will not receive a reply. For vehicles purchased from dealers after 1 January 2011, please see our Australian Consumer Law fact sheet.
2018-23 model year Hyundai CN7 i30 N with 2.0-litre Theta II GDI Turbo engine: oil consumption and piston slap
For 2018-23 model year Hyundai CN7 i30 N vehicles with 2.0-litre “Theta II” GDI turbocharged petrol engines, there have been reports of:
- excessive oil consumption, i.e. more than 1 litre per 1000 km; and
- loud “knocking” or “tapping” noises from the engine, especially when cold (i.e. piston slap).
These symptoms were typically caused by cylinder bore scoring, where manufacturing defects enabled the piston skirts to rub against the cylinder walls, causing damage, increased clearances and oil to bypass the piston rings and enter the combustion chamber. If the engine lost oil pressure, it could seize.
To fix, the engine needed to either be rebuilt or have the cylinder block replaced. To verify this condition, Hyundai dealers require an oil consumption test where the dealer would seal the dipstick and monitor the oil level over 1,000 kilometres. Owners of these vehicles are encouraged to regularly check their oil levels.
Johnson Winter Slattery has initiated a class action against Hyundai in respect of these engines. See https://www.hyundaiengineclassaction.com.au/ for details.
