HyundaiIoniq2021Electric/hyundai/ioniq/2021/electric/

2021 Hyundai Ioniq

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

Engine ElectricTransmission Automatic (AM-S6)

The 2021 Hyundai Ioniq Electric is driven by an electric powertrain paired with an automatic AM-S6 transmission. Reliability data for this model year show just one owner complaint, with the Electrical System identified as the top concern, alongside zero recalls. That minimal complaint volume and clean recall record make the 2021 Ioniq Electric a quiet, stable data point in the model’s reliability history.

Model year2022202120202019

Quick specs

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

Lug nut torque80.0-94.0 ft-lbsOEM · verified
EPA efficiency54/56/55 MPGeEPA · verified
EPA electric range0 miEPA · 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 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 Refer to the appropriate service information for options and battery usage.OEM · verified
Tire size195/65R15 91TOEM · verified
Wheel / rim6 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter2630035505
Front wiper blades98360G8000 alt 98350G8000

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (AM-S6)

Dimensions & weight NHTSA vPIC

Overall length176 in
Overall width71.7 in
Overall height57.1 in
Wheelbase106.3 in
Curb weight3371 lb
Track (front / rear)61.4 / 62.2 in
Weight distribution (front / rear)54/46

Ratings & economy EPA / vPIC

EPA city / highway / combined54 / 56 / 55 MPGe
Electric range0 mi
Electric motor240V Li-Ion
DrivetrainFront-Wheel Drive
Recommended fuelRegular Gasoline

Performance & power Independent road tests

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

No 2021 road test on record; the results below are same-engine tests from nearby model years, each shown under its own year.

8.1–8.7 sec0–60 mph (tested)quickest 8.10 sec — 2017 Electric Limited Hatchback
218 lb-ftTorque (as tested)
YearTrim / engine0–60¼ mileHPDrivetrain
2020Electric Limited Hatchback Elec 100-kW 38.3-kWh8.30 sec16.50 sec134 hpFWD
2020Electric Limited Hatchback Elec 100-kW 38.3-kWh8.40 sec16.60 sec134 hpFWD
2017Electric Limited Hatchback Elec 88-kW 28-kWh8.10 sec16.30 sec118 hpFWD
2017Electric Limited Hatchback Elec 88-kW 28-kWh8.60 sec16.70 sec118 hpFWD
2017Electric Limited Hatchback Elec 88-kW 28-kWh8.70 sec16.80 sec118 hpFWD

Service quick specs OEM factory data

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

Torque lug nuts to 80.0-94.0 ft-lbs.

Lubricants & capacities

Automatic Transmission FluidGL-4
Automatic Transmission Fluid Capacity1.8 qt
Engine CoolantEthylene Glycol
Engine CoolantEthylene Glycol

Chassis torques

Lug Nuts80.0-94.0 ft-lbs

Brakes

Brake Caliper Bolt to Carrier Torque16.0-23.0 ft-lbs
Brake Caliper Carrier to Hub Bolt TorqueFront: 72.0-; Rear: 58.0-
ABS Sensor Torque6.1
Brake Caliper Bolt to Carrier Torque16.0-23.0 ft-lbs
Brake Caliper Carrier to Hub Bolt TorqueFront: 72.0-; Rear: 47.0-
ABS Sensor Torque6.1
Minimum Pad Thickness0.079 in
Minimum Pad Thickness0.078 in

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 97,500 mi; coolant every 30,000 mi. The big-interval services (every 30,000 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 7,500 miAccessory Drive Belt (inspect) · Air Conditioning System (inspect) · Battery (inspect) · Brake Hydraulic System (inspect fluid level) · Brake Line (inspect) · Brake Linings (inspect)
Every 15,000 miBrake Pedal Assembly (inspect) · Clutch Hydraulic Line (inspect) · Fuel Evaporative Canister Filter (inspect) · Fuel Filter (inspect) · Parking Brake System (inspect)
Every 22,500 miClutch Hydraulic System (drain & refill) · Engine Air Filter Element (replace)
Every 30,000 miEngine Coolant System (drain, flush & refill) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect) · Fuel Tank Filler Cap (inspect) · Hybrid Inverter (drain, flush & refill coolant)
Every 37,500 miTransmission Assembly (inspect fluid level)
Every 40,000 miHybrid Inverter (drain, flush & refill coolant)
Every 67,500 miDrive Belt (replace)
Every 97,500 miSpark Plugs (replace)
At 120,000 miEngine Coolant System (drain, flush & refill) · Hybrid Inverter (drain, flush & refill coolant)

Reliability & federal safety record

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

Owner complaints about the 2021 Hyundai Ioniq dominate in one area — the electrical system, 1 of 1 reports (100%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the electrical system pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

0
Open recalls
NHTSA campaigns
21
Service bulletins
Manufacturer communications
1
ODI investigations
Office of Defects Investigation
1
Owner complaints
0 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Side★★★★★
Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 1 complaints on record, top 1 components.

Electrical System1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 21 bulletins on record with NHTSA.

BulletinDateComponentSummary
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…
25-BD-012H TSB2025-11-05Exterior LightingThis bulletin provides information regarding condensation related to the accumulated…
25-BE-020H TSB2025-09-29Electrical SystemThis bulletin provides information related to the changes introduced in the 2025 1st…
25-01-063H TSB2025-09-22EngineCertain IONIQ Electric (AE EV) and Kona Electric (OS EV) vehicles may exhibit a…

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 Ioniq. 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 Ioniq have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What is the EPA range and efficiency of the Ioniq?

EPA figures are 54 city / 56 highway / 55 combined MPGe. EPA electric range is 0 miles.