The 2018 Genesis G90 has 16 NHTSA owner complaints and 4 recalls on file (U.S. federal records, as of August 2026). The most-reported system is electrical at 5 complaints, typically surfacing around 14,000 miles (~$850 to repair). Source: NHTSA Office of Defects Investigation.
Solid reliability overall. Common issues are concentrated in a few systems.
0
Critical
4
Severe
0
Moderate
Should you avoid this 2018 G90?
Acceptable — with caveats
Worth owning if you verify the specific issues below before you buy.
Reliability score 7.8/10 — above the segment average
4 recall campaigns on file
Our read of the federal NHTSA complaint and recall record for this exact year and model —
not a substitute for a pre-purchase inspection. How we score.
Buying a used 2018 Genesis G90? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or
make the seller fix it before you sign.
What to inspect on this specific car
electrical — 5 owner reports
· tends to show around 14,000 mi · ~$850 to fix
⚠ The one to take seriously: electrical is flagged
severe on this model
, showing up around 14,000 mi.
Inspect it closely on a test drive.
Recalls to confirm are done
Run the VIN from the listing — 4 active recalls on this model. Recall repairs are always free.
Verdict for buyers: 7.8/10 model. The priciest documented failure is
electrical (~$850) — get the
seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report
tells you what this exact car has been through. Smart buyers get both.
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in
this vehicle's actual NHTSA record, not generic advice.
Dash light, leak, worn part — snap it and we'll read it against this car's record.
Photo attached — type a question or just hit Ask.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
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What owners are saying
recent NHTSA-filed complaints · verbatim
2018 G90· powertrain
There gear shifter will frequently not select r or d. It often takes 3 or more attempts before it will stay in gear. This is very dangerous when making a 3 point turn maneouver and very inconvenient at other times. This fault occurs every day. The dealer attempted to adjust the…
Car was completely dead three times, luckily it happened in garage, and was towed to dealer. Never fixed properly had to get rid of unreliable, unsafe car.
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…
The contact owns a 2018 Genesis G90. The contact received notification of NHTSA Campaign Number: 24V107000 (Electrical System); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for…
Had a problem with your 2018 Genesis G90?
File a complaint with NHTSA → It's free and official — owner filings are what build the federal safety record behind this page.
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Hyundai Motor America (Hyundai) is recalling certain 2018-2020 Genesis G80, 2017-2022 G90, and 2019-2022 G70 vehicles equipped with a 3
An oil leak in the presence of hot engine components can increase the risk of an engine compartment fire.
Fix: Dealers will replace the left turbocharger oil feed pipe, free of charge. Owner notification letters were mailed May 3, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 019G. This recall expands and replaces recall number 19V-538. Vehicles previously repaired under 19V-538 will need to have the new remedy completed.
Hyundai Motor America (Hyundai) is recalling certain 2015-2016 Genesis, 2017-2019 Genesis G80, Genesis G90, and 2019 Genesis G70 vehicles
An engine compartment fire while parked or driving can increase the risk of injury.
Fix: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will install a remedy relay kit in the engine junction box, free of charge. Owner notification letters were mailed July 15, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's numbers for this recall are 254(H) and 018G(G).
Hyundai Motor America (Hyundai) is recalling certain 2018 Genesis G80 and 2017-2018 Genesis G90 vehicles equipped with 3
Oil leaking onto the exhaust manifold increases the risk of a fire.
Fix: Hyundai will notify owners, and dealers will replace the turbocharger oil supply pipe, free of charge. The recall began October 3, 2019. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 003G.
Mostly yes. With a reliability score of 7.8 out of 10 based on 16 owner complaints filed with NHTSA, the 2018 Genesis G90 is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2018 Genesis G90?
The 2018 Genesis G90 is acceptable, with specific caveats. Worth owning if you verify the specific issues below before you buy. The record behind that call: Reliability score 7.8/10 — above the segment average; 4 recall campaigns on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2018 Genesis G90?
Inspect the electrical first — it's the most-reported issue on this model, with 5 owner complaints filed. Typical failure occurs around 14,000 miles. Average repair cost runs about $850 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2018 Genesis G90 a good used car to buy?
It scores 7.8 out of 10 on our NHTSA-based read of 16 owner complaints. The main thing to watch is electrical. Typical failure occurs around 14,000 miles. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2018 Genesis G90?
Based on NHTSA records, the most-reported issue is electrical, with 5 complaints filed. Typical failure occurs around 14,000 miles. Average repair cost runs about $850 at an independent shop.
What's the most expensive thing that goes wrong?
The electrical is one of the costlier repair items. Average repair cost runs about $850 at an independent shop. Typical failure occurs around 14,000 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Genesis G90 has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2018 Genesis G90?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 16 complaints on file and the costliest repair averaging $850, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.
Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database, last synced 5 days ago. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Genesis/G90.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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