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2021 Hyundai Elantra

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

The 2021 Hyundai Elantra requires 4.7 quarts of oil in 5W-30, 5W-40, or 10W-30 grades, and its reliability record shows 128 owner complaints led by seat-belt concerns plus six recalls. In the context of the model's 1992–2026 history, that total sits far under the 1,325 complaints recorded for 2013 but above the 21 seen for 2025. The combination of modest complaint volume and a handful of recalls positions this model year as a mid-range entry in the Elantra's long-term reliability arc.

Model year2025 2024 2023 2022 2021 2020 2019 2018

Quick specs

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

Engine oil capacity4.7 qtOEM · verified

Engine oil type5W-30 / 5W-40 / 10W-30OEM · verified

Lug nut torque80.0-94.0 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 47 · 60 O.E. AmpHrs. CCA battery, OE oil filter 2630035505. 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 47 · 60 O.E. AmpHrs. CCAOEM · verified

Tail / brake / turnOFFOEM · verified

Tire size225/45R17 91WOEM · verified

Wheel / rim7 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter	2630035505 alt 263312J000
Fuel filter	31112L1000
Battery	37110F9620 alt 37110F2720
Cabin air filter	KLC79AC001

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length	183.9 in
Overall width	71.7 in
Overall height	55.5 in
Wheelbase	107.1 in
Curb weight	2725 lb
Track (front / rear)	62.6 / 63 in
Weight distribution (front / rear)	61/39

Performance & power Independent road tests

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

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

7.1–8.7 sec0–60 mph (tested)quickest 7.10 sec — 2021 N Line Sedan

Year	Trim / engine	0–60	¼ mile	HP	Drivetrain
2021	N Line Sedan 1.6L Turbo I-4	7.10 sec	15.30 sec	201 hp	FWD
2021	Limited Sedan 2.0L I-4	8.10 sec	16.30 sec	147 hp	FWD
2021	Hybrid Limited Sedan 1.6L I-4 + Elec 1.32-kWh	8.40 sec	16.50 sec	139 hp	FWD
2021	Limited Sedan 2.0L I-4	8.40 sec	16.50 sec	147 hp	FWD
2021	Limited Sedan 2.0L I-4	8.40 sec	17.00 sec	147 hp	FWD
2021	N Line Sedan 1.6L Turbo I-4	8.60 sec	16.40 sec	201 hp	FWD
2021	Hybrid Limited Sedan 1.6L I-4 + Elec 1.32-kWh	8.70 sec	16.60 sec	139 hp	FWD
2022	N Sedan 2.0L Turbo I-4	5.10 sec	13.80 sec	276 hp	FWD

Service quick specs OEM factory data

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

This engine holds 4.7 qt of 5W-30 / 5W-40 / 10W-30 engine oil, DOT 4 brake fluid. Torque lug nuts to 80.0-94.0 ft-lbs, the oil drain plug to Use new gasket: 25.0-33.0 ft-lbs. The firing order is 1-3-4-2.

Lubricants & capacities

Automatic Transmission Fluid	GL-4
Automatic Transmission Fluid Capacity	1.8 qt
Automatic Transmission Fluid	Kia IVTF SP-CVT1
Automatic Transmission Fluid Capacity	6.8 qt
Brake Fluid	DOT 4
Engine Coolant	Ethylene Glycol
Engine Coolant Capacity	7.2 qt
Engine Coolant	Ethylene Glycol

Engine torques

Engine Flywheel Bolts	53.0-56.0 ft-lbs
Intake Manifold to Engine Bolts	14.0-17.0 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	26.0-30.0 ft-lbs
Engine Oil Pan Drain Plug	Use new gasket: 25.0-33.0 ft-lbs
Engine Oil Pan Drain Plug	Use new gasket: 25.0-33.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs	78.0-12.0 inch lbs. ft-lbs

Chassis torques

Lug Nuts

80.0-94.0 ft-lbs

Ignition

Cylinder Firing Order	1-3-4-2
Curb Idle Speed (No Load)	640 rpm
Curb Idle Speed Variance (No Load)	100 rpm
Curb Idle Speed (Secondary Under Load)	680 rpm
Curb Idle Speed Variance (Secondary Under Load)	100 rpm
Spark Plug Manufacturer	Hyundai
Spark Plug Gap	0.028-0.031 in
Spark Plug Manufacturer	Hyundai

Battery & A/C

Refrigerant	R1234yf
Refrigerant Capacity	1.04-1.15 lbs
Oil Group	PAG
Oil Type	46YF
Oil Capacity	3.04-3.71 oz
Standard BCI Group Number	47
Standard BCI Cranking Performance	60 O.E. AmpHrs. cca
Standard BCI Group Number	Only use AGM VRLA Battery. 47

Service checks

Fuel Pump Pressure Minimum	290 psi
Fuel Pump Pressure Maximum	5077 psi
Regulated Fuel System Pressure (With Vacuum)	51.0-73.0 psi
RPM	51.0-73.0 @ Idle rpm
Regulated Fuel System Pressure (With Vacuum)	48.0-54.0 psi
RPM	48.0-54.0 @ Idle rpm

Brakes

Brake Caliper Bolt to Carrier Torque	16.0-23.0 ft-lbs
Brake Caliper Carrier to Hub Bolt Torque	58.0-72.0 ft-lbs
ABS Sensor Torque	6.3
Minimum Pad Thickness	0.079 in
Vented Rotor Minimum Thickness for Replacement	Front: .906; Rear: .331
Variation from Parallelism Thickness Variation	Front: .0002; Rear: .0004
Maximum Rotor Runout	.002"
Vented Rotor Minimum Thickness for Replacement	Front: .906; Rear: .331

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

49.0-52.0 ft. lbs., Step 2: 98-102°

49–52 ft. lbs

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

87.0-94.0 ft. lbs., Step 2: 78-82°

87–94 ft. lbs

Cylinder Head — tightening sequence 1 stages

22.0 ft. lbs., Step 2: 90°, Step 3: 90°

22 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Every 7,500 mi	Accessory Drive Belt (inspect)
Every 8,000 mi	Accessory Drive Belt (inspect) · Air Conditioning System (inspect) · Air Intake System (inspect) · Battery (inspect) · Brake Hydraulic System (inspect fluid level) · Brake Line (inspect)
At 10,000 mi	Brake Hydraulic System (inspect fluid level)
Every 10,000 mi	Body Fasteners (inspect) · Clutch Hydraulic Line (inspect) · Vehicle Wiring Harnesses (inspect)
Every 16,000 mi	Cabin Air Filter (replace) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Filter (inspect) · Fuel Line (inspect) · Fuel Tank Filler Cap (inspect) · Parking Brake System (inspect)
At 20,000 mi	Fuel Evaporative Canister Filter (inspect)
Every 20,000 mi	Brake Hydraulic System (inspect fluid level) · Brake Pedal Assembly (inspect) · Engine Coolant System (inspect fluid level)
Every 24,000 mi	Engine Air Filter Element (replace)
Every 26,000 mi	Clutch Hydraulic System (drain & 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 Hyundai Elantra sits within a long-term downward trend of consumer complaints, which peaked in 2013 and 2017 before declining steadily into the current generation. With 128 complaints, the 2021 model shows a significant improvement over the 240 complaints recorded for 2020, though it remains slightly higher than the 95 complaints seen in 2022. While complaints decreased, 2021 saw a spike to 6 recalls and 2 investigations, up from 3 recalls and 0 investigations in 2020. Primary complaint areas for this year include seat belts (20) and forward collision avoidance (18), though the data does not specify the root causes for these issues. The record also notes 8 crash complaints and 1 fire complaint for the 2021 model. Given the continuing decline in overall complaints relative to previous years, this is a good year to buy.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

128

Owner complaints

8 involved a crash · 1 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

’92 ’93 ’94 ’95 ’96 ’97 ’98 ’99 ’00 ’01 ’02 ’03 ’04 ’05 ’06 ’07 ’08 ’09 ’10 ’11 ’12 ’13 ’14 ’15 ’16 ’17 ’18 ’19 ’20’21’22 ’23 ’24 ’25 ’26

Owner complaints filed with NHTSA, by component

All 128 complaints on record, top 8 components.

Seat Belts20

Forward Collision Avoidance18

Electrical System12

Unknown Or Other11

Engine6

Vehicle Speed Control,Forward Collision Avoidance5

Electrical System,Unknown Or Other4

Engine & Engine Cooling3

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 6 campaigns on record for this vehicle.

21V796000Seat Belts:FrontReported 13/10/2021

Hyundai Motor America (Hyundai) is recalling certain 2021 Elantra, Elantra HEV, Venue, Genesis GV80 and 2022 Genesis GV70 vehicles. In the event of a crash, the front driver-side and/or passenger-side seat belt… Remedy: Dealers will replace the seat belt pretensioners, free of charge. Owner notification letters were mailed February 10, 2022. Owners may contact Hyundai customer service at…

21V00M000Visibility:WindshieldReported 28/12/2021

Hyundai Motor America (Hyundai) is recalling certain 2020-2021 Santa Fe, 2021 Sonata, and Elantra vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in… Remedy: Dealers will remove and reinstall the front windshield panel, free of charge. Owner notification letters were mailed June 20, 2022. Owners may contact Hyundai customer service at…

Technical service bulletins NHTSA · verified

Showing 5 of 79 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
26-EE-003H TSB	2026-04-17	Electrical System	Some vehicles may exhibit difficulty starting in cold weather. This bulletin provides the…
DTN DL	2026-04-10	Air Bags	The National Highway Traffic Safety Administration (NHTSA) has identified the presence of…
DTN DCS	2026-04-10	Air Bags	The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety…
26-AD-001H TSB	2026-02-24	Exterior Lighting	Some 2019MY and newer vehicles equipped with a front view camera may illuminate certain…
P33 OL	2025-12-19	Electrical System	In response to this trend, we engineered a software upgrade that addresses the social…

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 Elantra. 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.

Group 47 battery Vehicles taking 4.7 qt Engine oil filter 2630035505 Fuel filter 31112L1000 Battery 37110F9620 Cabin air filter KLC79AC001

Reference guides

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

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 2021 Elantra take?

4.7 qt of 5W-30 is preferred. 5W-40 may be used if 5W-30 is unavailable. Temperatures above 0°F: 10W-30; Temperatures above 5°F: 15W-40; Temperatures above 20°F: 20W-50, per the factory manual.

Does the 2021 Elantra have open recalls?

NHTSA lists 6 recall campaign(s) for this model year. Check your specific vehicle by VIN.