2018 Genesis G90 Engine Problems
- Complaints
- 4about this part
- Share
- 25%of 16 total for the year
- Median mileage
- 6,348miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine of the 2018 Genesis G90, 25% of the 16 complaints for this model year. Where a mileage was given, the median is 6,348 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My car has been recalled pursuant to NHTSA recall number 19v-538. Despite making four separate attempts, I have been unable to get Genesis to perform the recall. The dealership from which I purchased the car has gone out of business. I have contacted the manufacturer twice, but despite promises, they have been unable to perform the necessary repair.”
NHTSA complaint #11299612, filed 2020-01, 6,348 miles“vehicle went dead. replaced the battery. Started after replacement but went dead a few days later. Towed to dublin CA genesis. Diagnosed as water corrosion to wiring harness. vehicle has less than 22000 miles, other than car washes and normal winter driving in CA. Genesis does have a recall for water intrusion NHTSA ID# 24v107000. I believe my issue is related to this recall but the dealership doesnt think so.”
NHTSA complaint #11603743, filed 2024-07Related service bulletins
- 10167734Oct 7, 2019This bulletin provides information regarding the changes in the timing chain and the crankshaft sprockets on certain Genesis G80 (DH) and Genesis G90 (HI) vehicles equipped with…
- 10167236Oct 7, 2019This bulletin provides information regarding the changes in the timing chain and the crankshaft sprockets on certain Genesis G80 (DH) and Genesis G90 (HI) vehicles equipped with…
- 10165452Aug 7, 2019On certain 2018MY G80 (DH) and G90 (HI) vehicles equipped with Lambda engines, the factory installed engine oil filler cap may have the incorrect text for engine oil viscosity…
- 10151885Nov 16, 2018This bulletin provides information related to an ECM (Engine Control Module) software update to improve starting performance. Perform this update if a vehicle is in for service…
Engine: other model years
Other parts of the 2018 Genesis G90
5 complaintsFuel system
2 complaintsOther or unknown
2 complaintsTransmission and drivetrain
2 complaintsAir bags
1 complaintsForward collision avoidance
1 complaintsLane departure
1 complaintsLatches, locks and linkages
1 complaintsBody and structure
1 complaintsTires
1 complaints
← All problems reported for the 2018 Genesis G90
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology