GenesisG802021Overview/genesis/g80/2021/base/

2021 Genesis G80

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 G80.

The 2021 Genesis G80 enters the reference record with a notably restrained owner-complaint count of just 9 alongside four open recalls, a profile that places it well past the nameplate's early-generation turbulence. Tires surface as the dominant complaint category, a granular signal that grievances cluster around consumable components rather than core mechanical or electrical systems. Within the broader 2017–2026 model history, the G80's high-water mark for dissatisfaction came in 2018 with 94 complaints, while the 2024 model year has logged a single complaint — a swing that frames 2021 as comfortably past the troubled early-generation peak and into the second-generation era's calmer reliability territory. For a researcher, that positioning makes the 2021 G80 a useful pivot point: a model year old enough to have accumulated meaningful owner feedback, yet reflective of the engineering refinements that have since driven complaints toward the floor of the nameplate's range.

Model year202620252024202320222021202020192018

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Lug nut torque101.0-116.0 ft-lbsOEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI Refer to the appropriate service information for options and battery usage. battery, OE oil filter 263203N000. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI Refer to the appropriate service information for options and battery usage.OEM · verified
Tail / brake / turnSWITCHOEM · verified
Tire size245/50R18/XL 104WOEM · verified
Wheel / rim8 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter263203N000
Fuel filter31112L1000
Spark plug1887509085
Front wiper blades98360F2600 alt 00F09AU026HY
Serpentine belt252122T000
Thermostat2550025001

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length196.5 in
Overall width75.6 in
Overall height57.9 in
Wheelbase118.5 in
Curb weight4295 lb
Track (front / rear)64.6 / 65.7 in
Weight distribution (front / rear)52/48

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the G80 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

4.9–5.9 sec0–60 mph (tested)quickest 4.90 sec — 2021 3.5T Prestige Sedan
YearTrim / engine0–60¼ mileHPDrivetrain
20213.5T Prestige Sedan 3.5L Twin-Turbo V64.90 sec13.40 sec375 hpRWD
20213.5T Prestige Sedan 3.5L Twin-Turbo V65.00 sec13.50 sec375 hpRWD
20213.5T Prestige Sedan 3.5L Twin-Turbo V65.20 sec13.70 sec375 hpAWD
20212.5T Prestige Sedan 2.5L Turbo I-45.30 sec14.00 sec300 hpRWD
20212.5T Advance Sedan 2.5L Turbo I-45.50 sec14.00 sec300 hpAWD
20212.5T Prestige Sedan 2.5L Turbo I-45.70 sec14.10 sec300 hpRWD
20212.5T Prestige Sedan 2.5L Turbo I-45.90 sec14.30 sec300 hpAWD
20223.5T Sport Prestige Sedan 3.5L Twin-Turbo V64.70 sec13.20 sec375 hpAWD

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

Torque lug nuts to 101.0-116.0 ft-lbs. The firing order is 1-2-3-4-5-6.

Lubricants & capacities

Engine CoolantEthylene Glycol
Engine Coolant Capacity10.1 qt
Engine CoolantEthylene Glycol
Engine Coolant Capacity11.6 qt

Engine torques

Intake Manifold to Engine Bolts14.0-17.0 ft-lbs
Exhaust Manifold to Cylinder Head Bolts36.0

Chassis torques

Lug Nuts101.0-116.0 ft-lbs

Ignition

Cylinder Firing Order1-2-3-4-5-6
Spark Plug ManufacturerGenesis
Spark Plug Gap0.031-0.035 in
Spark Plug ManufacturerGenesis
Spark Plug Gap0.031-0.035 in

Battery & A/C

RefrigerantR1234yf
Refrigerant Capacity1.33-1.44 lbs
Oil GroupPAG
Oil Type46YF
Oil Capacity3.04-3.71 oz

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 28.0-; Rear: 16.0-
Brake Caliper Carrier to Hub Bolt Torque72.0-87.0 ft-lbs
ABS Sensor Torque6.4
Minimum Pad Thickness0.079 in
Variation from Parallelism Thickness Variation.0002"
Maximum Rotor RunoutFront: .0016; Rear: .002

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 1 stages
142.0-45.0 ft. lbs., Step 2: 100-104°, Step 3: 100-104°42–45 ft. lbs
Cylinder Head — tightening sequence 1 stages
128.0-30.0 ft. lbs., Step 2: 118-122°, Step 3: 88-92°28–30 ft. lbs
Intake Manifold to Engine Bolts — tightening sequence 1 stages
12.9-4.3 ft. lbs., Step 2: 19.5-23.1 ft. lbs., Step 3: 19.5-23.12.9–4.3 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 48,000 mi; coolant every 24,000 mi. The big-interval services (every 24,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 8,000 miAccessory Drive Belt (inspect) · Air Conditioning System (inspect) · Battery (inspect) · Brake Line (inspect) · Brake Linings (inspect) · Brake Rotor (inspect)
Every 16,000 miCabin Air Filter (replace) · Fuel Evaporative Canister Filter (inspect) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect)
Every 24,000 miEngine Coolant System (drain, flush & refill)
Every 32,000 miDifferential (inspect fluid level)
At 48,000 miAccessory Drive Belt (inspect)
Every 48,000 miBrake Hydraulic System (drain, refill & bleed) · Spark Plugs (replace)
At 80,000 miEngine Coolant System (drain, flush & refill)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2021 Genesis G80 sits at the low‑point of the model’s complaint curve, registering only nine complaints versus a peak of 94 in 2018 and a steady decline to single‑digit levels thereafter. Its recall count (four) is modestly higher than the 2019 low of three but comparable to the consistent four‑recall pattern seen from 2021 through 2023, while investigations dropped to zero beginning in 2021. Technical Service Bulletins also fell sharply after 2018, from 97‑98 down to 60 in 2021 and continued decreasing each year, indicating fewer manufacturer‑issued fixes. The top complaint areas in 2021—tires, service brakes, and minor electrical issues—are limited in scope, and there were no crash or fire complaints recorded. **Takeaway:** 2021 represents a relatively clean year in the G80’s recent history, making it a solid choice for a used purchase.

4
Open recalls
NHTSA campaigns
60
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
9
Owner complaints
0 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★★
Frontal★★★★★
Side★★★★★
Rollover★★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 9 complaints on record, top 6 components.

Tires3
Service Brakes2
Electrical System,Structure1
Electrical System,Vehicle Speed Control,Service Brakes1
Unknown Or Other1
Power Train,Engine1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 4 campaigns on record for this vehicle.

21V208000Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And FittingsReported 24/03/2021

Hyundai Motor America (Hyundai) is recalling certain 2021 Genesis G80 and GV80 vehicles equipped with 2.5-litre turbo engines. The fuel tube connecting the high pressure fuel pump to the fuel rail may not seal properly… Remedy: Hyundai will notify owners, and dealers will replace the high pressure fuel tube, free of charge. Owner notification letters were mailed on May 24, 2021. Owners may contact…

23V094000Seat Belts:FrontReported 16/02/2023

Hyundai Motor America (Hyundai) is recalling certain 2020-2023 Genesis GV80, 2021-2023 Genesis G80, 2022-2023 Genesis GV70, and 2023 Genesis GV60 vehicles. In the event of a crash, the front driver-side and/or… Remedy: Dealers will secure the seat belt pretensioners with a cap, free of charge. Owner notification letters were mailed April 14, 2023. For GV60 owners, Interim notification letters…

Technical service bulletins NHTSA · verified

Showing 5 of 60 bulletins on record with NHTSA.

BulletinDateComponentSummary
26-HA-002G TSB2026-06-10EngineSome Genesis vehicles (listed below) equipped with Lambda-III 3.5T-GDI engines may…
26-GI-002G TSB2026-05-27Electrical SystemThis bulletin provides information related to the navigation and head unit software…
26-EE-003G TSB2026-04-17Electrical SystemSome vehicles may exhibit difficulty starting in cold weather. This bulletin provides the…
DTN DL2026-04-10Air BagsThe National Highway Traffic Safety Administration (NHTSA) has identified the presence of…
DTN DCS2026-04-10Air BagsThe National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific G80. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

Does the 2021 G80 have open recalls?

NHTSA lists 4 recall campaign(s) for this model year. Check your specific vehicle by VIN.