DecodedCars2018 Genesis G90
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2018 models.
- Class
- Large Cars
- Body styles
- 3.3t 4dr Sedan AWD, 5.0 4dr Sedan AWD
- Engines
- 3.3L 6-cyl turbo, 5.0L 8-cyl
- Drivetrain
- All-Wheel Drive, Rear-Wheel Drive
- Fuel
- Premium Gasoline
- MPG (best)
- 20 combined · 17 city / 24 hwy
- Length
- 205.5 in
- Curb weight
- 4,793–4,914 lb
- NHTSA rating
- Not rated
- Recalls
- 4 campaigns
Pros & cons
What's good
- AWD / 4WD available
Watch out for
- Below-average fuel economyBest version gets 20 MPG combined, 13% below the 2018 large car average of 23.1 MPG.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
- "Park outside" recallCheck that the recall repair was done before buying or driving.
Calculated from EPA, NHTSA and vPIC data against 19 similar 2018 models — not a review. How we calculate this →
Overview
The 2018 Genesis G90 is a large car offered with 2 engines (3.3L 6-cyl turbo and 5.0L 8-cyl) and all-wheel drive and rear-wheel drive.
It measures about 206 inches long and 76 inches wide on a 125-inch wheelbase, with a curb weight of roughly 4,793 lb (3.3t 4dr Sedan AWD).
EPA rates its most efficient version at 20 MPG combined (17 city / 24 highway), 13% worse than the 2018 large car average of 23.1 MPG, for an estimated $4,100 a year in fuel.
NHTSA has not published a 5-Star overall rating for this model year.
It has 4 recall campaigns on file and owners have filed 16 complaints with NHTSA since 2015, most often about the electrical system.
What changed for 2018
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2017 G90 — a carry-over year in the data.
Compared with 2017; trim, feature and price changes aren't covered. See the 2017 G90 →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| 3.3t 4dr Sedan AWD | 205.5 in | 76 in | 58.3 in | 124.8 in | 64.6 / 65 in | 4,793 lb | 53/47 |
| 5.0 4dr Sedan AWD | 205.5 in | 76 in | 58.3 in | 124.8 in | 64.6 / 65 in | 4,914 lb | 53/47 |
Transport Canada CVS (Open Government Licence – Canada), Canadian-market figures.
Will it fit your garage? Check with your measurements →Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| G90 AWD | 3.3L 6-cyl turbo | Automatic (S8) | All-Wheel Drive | 17 / 24 / 20 | -13% | $4,100 | 448 |
| G90 RWD | 3.3L 6-cyl turbo | Automatic (S8) | Rear-Wheel Drive | 17 / 24 / 20 | -13% | $4,100 | 454 |
| G90 RWD | 5.0L 8-cyl | Automatic (S8) | Rear-Wheel Drive | 16 / 24 / 19 | -18% | $4,350 | 482 |
| G90 AWD | 5.0L 8-cyl | Automatic (S8) | All-Wheel Drive | 15 / 23 / 18 | -22% | $4,550 | 493 |
EPA estimates; "vs. class" is combined MPG against the 2018 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2018 Genesis G90.
Similar 2018 large cars
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2018 Genesis G90 (this car) | 20 MPG | Not rated | 4 |
| 2018 Lexus LS | 28 MPG | Not rated | 4 |
| 2018 Lincoln Continental | 21 MPG | ★★★★★ | 2 |
| 2018 Tesla Model S | 335 mi | Not rated | 11 |
| 2018 Jaguar XJ | 21 MPG | Not rated | 0 |
| 2018 Porsche Panamera | 24 MPG | Not rated | 8 |
| 2018 Audi A8 | 22 MPG | Not rated | 2 |
Recalls (4)
Engine And Engine Cooling › Engine › Gasoline › Turbo/Supercharger · Mar 8, 2024
NHTSA campaign 24V191000 · 28,439 vehicles
- Problem
- Hyundai Motor America (Hyundai) is recalling certain 2018-2020 Genesis G80, 2017-2022 G90, and 2019-2022 G70 vehicles equipped with a 3.3-liter V6 turbocharged engine. The left turbocharger oil feed pipe may deteriorate and leak oil.
- Risk
- 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.
Electrical System › Starter Assembly › Solenoid · Feb 13, 2024 Park outside
NHTSA campaign 24V107000 · 90,907 vehicles
- Problem
- Hyundai Motor America (Hyundai) is recalling certain 2015-2016 Genesis, 2017-2019 Genesis G80, Genesis G90, and 2019 Genesis G70 vehicles. Water may enter the starter solenoid and cause an electrical short, which can result in an engine compartment fire while parked or driving.
- Risk
- 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).
Engine And Engine Cooling › Exhaust System › Manifold/Header/Muffler/Tail Pipe · Jul 19, 2019
NHTSA campaign 19V538000 · 8,059 vehicles
- Problem
- Hyundai Motor America (Hyundai) is recalling certain 2018 Genesis G80 and 2017-2018 Genesis G90 vehicles equipped with 3.3 liter turbocharged engines. The turbocharger oil supply pipe may have a loose seal, causing oil to leak onto the exhaust manifold.
- Risk
- 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.
Visibility › Glass, Side/Rear · May 10, 2018
NHTSA campaign 18V305000 · 37 vehicles
- Problem
- Hyundai Motor America (Hyundai) is recalling certain 2018 Hyundai Genesis G80 and Genesis G90 vehicles. The windshield and rear window on these vehicles may have been installed with incorrect primer, potentially reducing the glass bonding strength.
- Risk
- If the glass bonding strength is reduced over time, the windshield and rear window may detach while driving, increasing the risk of a crash.
- Fix
- Hyundai will notify owners, and dealers will replace the front and rear glass, free of charge. The recall began on July 6, 2018. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 001G.
Not every 2018 Genesis G90 is affected — only a VIN check confirms your car.
Owner-reported problems
Unverified owner reports; best-sellers collect more.
Used 2018 Genesis G90 buyer's checklist
- Run the VIN at nhtsa.gov/recalls. 4 recalls this year — ask for proof of repairs.
- Safety-critical recall. At least one recall carries a "Do Not Drive" or "Park Outside" warning. Do not buy until the VIN shows it was repaired.
- Electrical System — 5 owner reports. Test every window, lock, light, screen and USB port; check the battery age.
- Engine — 4 owner reports. Cold-start the engine, listen for knocking, and watch for warning lights or hesitation on acceleration.
- Fuel/Propulsion System — 2 owner reports. Smell for fuel around the car and in the cabin, check that it starts easily when warm, and look at the oil dipstick for a fuel smell or rising level.
- Mileage to watch. Owners typically reported problems around 6,348 miles; ask what was repaired near that point.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2018 Genesis G90. Not a substitute for a professional inspection.
Other G90 years
Compare all years →| Year | MPG (best) | Length | Overall | Recalls | Complaints |
|---|---|---|---|---|---|
| 2026 G90 | 21 | 207.9 in | Not rated | 2 | 0 |
| 2025 G90 | 21 | 207.9 in | Not rated | 4 | 2 |
| 2024 G90 | 21 | 207.9 in | Not rated | 4 | 3 |
| 2023 G90 | 21 | 207.9 in | Not rated | 6 | 5 |
| 2022 G90 | 20 | 205.1 in | Not rated | 2 | 4 |
| 2021 G90 | 20 | 205.1 in | Not rated | 1 | 5 |
| 2020 G90 | 20 | 205.5 in | Not rated | 1 | 3 |
| 2019 G90 | 20 | 205.5 in | Not rated | 2 | 6 |
| 2017 G90 | 20 | 205.5 in | Not rated | 3 | 26 |
Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Genesis. How we calculate this →