2021 Kia Niro
The 2021 Kia Niro is sold in the U.S. as an electric, plug-in hybrid and hybrid compact SUV with 5 EPA-rated configurations. Its longest-range version, the Niro Electric, is EPA-rated at 239 miles with 112 MPGe combined efficiency. NHTSA lists 2 recall campaigns for this model year, 1 rated critical, which gives it a Safety Signal grade of B. Owners have filed 12 complaints, most often about the power train. NHTSA crash-tested it at 4 stars overall.

Specs & fuel economy
Source: EPA fueleconomy.gov| Configuration | Powertrain | Drive | Engine / motor | City | Hwy | Comb | Range | kWh/100mi | Charge (240V) | Annual fuel* |
|---|---|---|---|---|---|---|---|---|---|---|
| Niro Electric | Electric | FWD | 150 kW AC PMSM | 123 | 102 | 112 MPGe | 239 mi | 30.0 | 9.5 h | $700 |
| Niro Plug-in Hybrid | Plug-in hybrid | FWD | 1.6L 4-cyl + 45 kW IPMSM | 48 | 44 | 46 (66 MPGe blended) | 26 mi electric | 32 | 2.2 h | $1,450 |
| Niro FE | Hybrid | FWD | 1.6L 4-cyl + 240V Li-Ion | 53 | 48 | 50 | — | — | — | $1,350 |
| Niro | Hybrid | FWD | 1.6L 4-cyl + 240V Li-Ion | 51 | 46 | 49 | — | — | — | $1,350 |
| Niro Touring | Hybrid | FWD | 1.6L 4-cyl + 240V Li-Ion | 46 | 40 | 43 | — | — | — | $1,550 |
*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 43820, 43686, 43633, 43632, 43631.
Emissions & certification
Source: EPA emission certificates| Configuration | Smog rating | Emission standard | Where it can be sold new | SmartWay |
|---|---|---|---|---|
| Niro Electric | 10 / 10 | Federal Tier 3 Bin 0 / California ZEV | All 50 states (federal, all altitudes); California and states following California standards | SmartWay Elite |
| Niro, Niro FE, Niro Plug-in Hybrid, Niro Touring | 7 / 10 | California LEV-III SULEV30 / Federal Tier 3 Bin 30 | All 50 states (federal, all altitudes); California and states following California standards | SmartWay |
Certified for all fifty states, so it can be registered new anywhere in the U.S.
The smog rating scores tailpipe pollutants other than greenhouse gases, 1 (worst) to 10 (best), and is comparable only within a model year. The standard is the federal bin or California tier the configuration was certified to. Both come from the EPA certificate behind the window sticker.
Specifications filed with NHTSA
Source: NHTSA vPICDimensions Exterior
| Body style | Sport Utility Vehicle [SUV]/Multipurpose Vehicle [MPV] |
| Doors | 4 |
| GVWR class | Class 1C: 4,001 - 5,000 lb (1,814 - 2,268 kg) |
Engine Basics
| Cylinders | 4 |
| Displacement | 1.6 L |
Engine Output
| Horsepower | 104 hp |
Fuel Economy
| Fuel | Gasoline |
Seating
| Seat rows | 2 |
| Seating capacity | 5 seats |
Transmission
| Drivetrain | 4x2 |
| Transmission | Automatic |
| Transmission speeds | 1 |
Driver assistance
Standard: Adaptive cruise control, Anti-lock brakes, Backup camera, Blind-spot monitoring, Electronic stability control, Forward collision warning, Lane departure warning, Lane keeping assist, Pedestrian automatic emergency braking, Rear cross-traffic alert
Filed by the manufacturer with NHTSA under the federal vehicle-identification rule and decoded from the VIN pattern — not a manufacturer press kit, so it describes the configurations we could identify rather than every trim (seen: EX, EX Premium, LX, LXS, LXS). Figures for the trim you are looking at may differ.
Dimensions & weight
Source: Transport Canada| Length | 171.7 in |
| Width (body, without mirrors) | 70.9 in |
| Height | 60.6 in |
| Wheelbase | 106.3 in |
| Track, front | 61.8 in |
| Track, rear | 62.2 in |
| Curb weight | 3,166–3,889 lb |
| Weight distribution, front/rear | 54/46 |
Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here 3 configurations: 4-door SUV Hybrid, EV 4-door SUV, PHEV 4-door SUV Hybrid. Where a range is shown, those versions differ. Width is the body without mirrors, which is why it can read narrower than a brochure figure. Before we used it we checked it against the US manufacturer press kits we hold (27 Sep 2026): wheelbase agreed within 1% on every vehicle we could compare, length on 98%, and the curb weight fell inside the manufacturer's range on 96%. Source dataset. Contains information licensed under the Open Government Licence – Canada. Licence.
Factory warranty running out?
The 2021 Kia Niro is in the years where high-voltage electronics and module repairs land on the owner. What an extended plan does and does not cover is worth reading before a dealer quotes you one.
What to check before you buy →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Recalls (2)
Source: NHTSA recall databasePower Train
SC276These are vehicle campaigns — the ones the automaker filed against this model. NHTSA also records equipment recalls, filed by a parts maker against a component (a tyre, a child seat, an aftermarket part), and those are not listed here or counted above. nhtsa.gov/recalls shows both for a VIN.
NHTSA defect investigations
Electrical System:Propulsion System — Pedestrian alert sounds closed
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021. On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject mat
Opened Jan 27, 2023 · closed Aug 7, 2023 · action DP22005 · the investigation’s page →
Whether any of this applies to one specific Niro
A campaign covers a build range, not a model year, so two identical-looking cars from 2021 can differ. Both of these check a VIN against the manufacturer’s own list, free, in about ten seconds. Kia publishes its own lookup because federal rule 49 CFR 573.15 requires it to, and to keep it current to within seven days.
Hear about a recall before the letter does
The manufacturer’s letter is the last step of a recall: it has up to 60 days after filing to mail owners, at the address on the registration. We email you the day NHTSA posts a recall on the 2021 Kia Niro, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.
Parts & accessories for the 2021 Kia Niro
Search by fitment on eBay Motors — OEM take-offs, aftermarket, and the trim pieces dealers no longer stock. The listing and the price are the seller's.
Find parts for this Niro →Owner complaints
Source: NHTSA complaint database1 involved a crash · 0 a fire · 1 injuries · 0 deaths reported
16 per 10,000 built · Kia reported 7,705 Niro built (its Early Warning production report to NHTSA)
Filed per year: 2021: 2 · 2022: 1 · 2023: 3 · 2024: 2 · 2025: 1 · 2026: 3
Most-cited components
In owners' own words
Filed with NHTSA by the people who own these cars, one per problem area. Quoted as written, with anything identifying removed.
This is a hybrid vehicle. It has Dual clutch transmission. Since I have owned it, intermittently the clutch does not disengage completely. This causes the vehicle to try to pull ahead but my foot is on the brake. The vehicle does not stall. Somehow it figures out it can't pull ahead and somehow fully releases.
I received important safety recall letter for NHTSA recall # 23V534. the HCA & or Fuse might need to be replaced . I brought the 2021 Nero to my local Kia dealership, Eagle kia ,Riverhead NY on January 18th.
EV motor and drive train have a clattering noise, much like a playing card attached to a bicycle clattering against the wheel spokes. it speeds up and slows down with the acceleration of the motor
The rear brake rotors on the vehicle are pitted, as confirmed by a local repair shop. The "incident" is ongoing. Kia refuses to repair or replace them under warranty (25,500 miles on the car), claiming they are wear item. However, pitting is not wear, in fact quite the opposite.
I was backing out of a tandem parking spot in a private garage and got too close to a pillar, and tried to pull forward into the spot. It felt like the car got snagged on the pillar, but while pulling forward slowly, the gas pedal snapped off and the car accelerated quickly and uncontrollably.
While driving on a major highway, my sunroof suddenly exploded. Luckily the screen was pulled shut otherwise I would have been covered in glass. I was able to drive to the next exit and park the vehicle to then get out and observe the damage. There was a gaping hole in the sunroof. I called a tow who brought me to a Kia dealership.
Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.
Reported by Kia itself: 3 death-or-injury claims on this model year in its quarterly Early Warning reports to NHTSA (49 CFR 579.21): 3 injured, as claimed, not verified — about 39 per 100,000 built. Every Niro model year, by year and system → Dated and by system, they are exhibit F of the defect dossier.
Crash ratings
Source: NHTSA NCAP| Configuration | Overall | Frontal | Side | Rollover | Rollover risk |
|---|---|---|---|---|---|
| SUV FWD | ★★★★☆ | ★★★★☆ | ★★★★★ | ★★★★☆ | 12% |
NHTSA New Car Assessment Program.
Service bulletins & campaigns
Source: NHTSA manufacturer communicationsMost often about: Electrical System, Engine, Power Train, Equipment, Visibility/Wiper.
- TSB_CLI049_R2 Service bulletin2026-08-28 · Electrical System
- TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR – ELECTRICAL A/C COMPRESSOR - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding the partial repair of the Air Conditioning (A/C) compressor assembly on some 2011MY~ Optima Hybrid (TF HEV, JF HEV/PHEV), 2015MY~
- PI2603Y_TSB Service bulletin2026-07-08 · Electrical System
- TECHNICAL SERVICE BULLETIN: BSA REPLACEMENT (PI2603Y) - This bulletin provides information related to the Technical Service Bulletin previously published under PI2603, titled “BMS Battery Diagnostic Logic Improvement.” If one or more of the Diagnostic Trouble Codes (DTCs) listed in the bulletin are present or stored after the Battery Management System (BMS) software upgrade has been performed per
- PI2603_OWNR Other2026-06-17 · Fuel/Propulsion System
- PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION (PI2603) - This document is the owner notification advising that Kia is conducting a Product Improvement Campaign to update the battery management system (BMS) software to enhance battery diagnostic performance in certain 2020-2022 MY Niro EV vehicles.
- PI2603_TSB Service bulletin2026-06-15 · Electrical System
- TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: BMS BATTERY DIAGNOSTIC LOGIC IMPROVEMENT (PI2603) - This bulletin provides information regarding a Battery Management System (BMS) software update for certain 2020–2022MY Niro (DE EV) vehicles produced from June 2, 2020, through November 8, 2021. Kia has developed improved battery health monitoring software to enhance the BMS diagnostic pe
- TSB_ELE422 Service bulletin2026-05-28 · Electrical System
- TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE. KIA. COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable Kia vehicles using the Kia Navigation Updater available at update.kia.com. The software update may improve system performance, enhance existing features, and apply the latest operating software for sup
- TSB_ELE417 Service bulletin2026-04-14 · Electrical System
- TECHNICAL SERVICE BULLETIN: INFOTAINMENT SOFTWARE UPDATE PROCEDURE - This bulletin provides information on the process for downloading infotainment software updates and preparing USB for installation on applicable Kia vehicles. The software downloads and USB preparation process is similar across all supported platforms; however, in‑vehicle installation procedures vary by head unit type.
- PS797 Other2025-12-09 · Back Over Prevention — Warnings
- PITSTOP: TECHNICAL OPERATIONS: EXTERNAL DAMAGE TO ULTRASONIC SENSOR: This Pitstop provides information related to Parking Distance Warning (PDW) alerts and repairs involving ultrasonic sensors. The PDW system alerts the driver while parking, by calculating distance based on the difference in signal transmission and reception times between the vehicle (ultrasonic sensor) and an object. The membrane
- SC321_OWNR_201 Service campaign2025-08-21 · Service Brakes
- VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC321) - This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to address a potential corrosion concern with the Integrated Electronic Brake (IEB) in certain 2019-2022 MY Niro EV vehicles that were originally sold in or are currently registered in one of the 28 states with high road salt usage.
A service bulletin is the manufacturer telling its dealers how to diagnose or repair a known condition. It is not a recall, not a finding that the vehicle is defective, and the work is not automatically free — though a bulletin is often what a dealer works from when you describe a symptom, so quoting the document number can save a diagnosis. The count is every communication filed; the list shows the most recent, one entry per campaign, because a single campaign is usually filed as several documents on the same day. The summaries are NHTSA's; the full documents come from the manufacturer.
Niro by model year
all years, side by side →Common questions about the 2021 Niro
Source: EPA, NHTSA and manufacturer press kitsDoes the 2021 Kia Niro have any recalls?
NHTSA has posted 2 recall campaigns for the 2021 Kia Niro, 1 of them rated critical. The most serious on file is 23V534000, covering Power Train. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.
How safe is the 2021 Kia Niro?
NHTSA gave the 2021 Kia Niro 4 stars overall in its New Car Assessment Program tests — 4-star frontal crash, 5-star side crash, 4-star rollover. WhichTrim also grades it B (80/100) on its recall record, which is a different question from crash protection.
What is the fuel economy of the 2021 Kia Niro?
Across the 5 EPA-rated configurations of the 2021 Kia Niro, the best EPA combined figure is 50 mpg (MPGe on the electrified versions) and the longest EPA range is 239 miles on a charge. Figures are the EPA's own, per configuration, and every one is listed above.
What are the dimensions of the 2021 Kia Niro?
Transport Canada measured it at 171.7 in long, 70.9 in wide (body, without mirrors), 60.6 in tall, on a 106.3 in wheelbase. Curb weight: 3,166–3,889 lb depending on configuration. Those are its measurements of the North American versions; every figure is in the table above.
What do owners complain about on the 2021 Kia Niro?
Owners have filed 12 complaints with NHTSA about the 2021 Kia Niro, most often about power train, visibility/wiper, unspecified. Of those, 1 involved a crash, 1 reported injuries. Complaints are unverified owner reports, so treat the pattern as a signal and the individual report as an anecdote.
How clean is the 2021 Kia Niro?
The EPA smog rating for the 2021 Kia Niro runs 7 to 10 out of 10 across its configurations. That score covers tailpipe pollutants other than greenhouse gases, and it only compares vehicles within the same model year. It is certified for all fifty states, so it can be registered new anywhere in the U.S. Its configurations were certified to different standards — California LEV-III SULEV30, California ZEV, Federal Tier 3 Bin 0, Federal Tier 3 Bin 30 — which the table above lists per configuration.
Are there service bulletins for the 2021 Kia Niro?
The manufacturer has filed 125 service bulletins and related communications with NHTSA for the 2021 Kia Niro, most often covering electrical system, engine, power train. The most recent is dated 2026-08-28. A bulletin is not a recall: it is the repair procedure a manufacturer sends its dealers for a condition it knows about, and the work is not automatically paid for. It is still worth knowing — if the symptom matches, quoting the bulletin number at the service desk can save a diagnosis. The document numbers and summaries are listed above.
What we hold, and what an empty row means
Paid vehicle-history reports will not tell you the difference between “nothing happened to this car” and “we never received that record” — both of the big two say as much in their own help pages. Most of what is on this page comes from complete federal registers, so we can tell you which is which, row by row.
| Data | Held | Source | What it covers — or what empty means |
|---|---|---|---|
| Fuel economy & configurations | 5 configurations | EPA certification records | Every configuration the EPA certified for sale, with its own test figures. |
| Emission certificates | 5 configurations | EPA emission certificates | Smog rating, standard and the sales area that decides where the car can be sold new. |
| Recalls | 2 | NHTSA recall campaigns | A complete federal register: every campaign covering this model year, with severity and advisory flags. |
| Owner complaints | 12 | NHTSA complaint database | Also complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold. |
| Crash ratings | 1 tested | NHTSA NCAP | Only the configurations NHTSA chose to crash-test, which is never all of them. |
| Service bulletins | 125 | NHTSA manufacturer communications | Everything the manufacturer told its dealers about a defect or malfunction, short of a recall. |
| Investigations | 1 | NHTSA Office of Defects Investigation | Open and closed defect investigations, with the agency's own narrative. |
| Driver-assist crash reports | none | NHTSA Standing General Order 2021-01 | No report has been filed. Only entities named in the order report, and only crashes they hear of — so this is also what an unequipped car, or a manufacturer without telematics, looks like. |
| Specifications filed with NHTSA | 12 fields | NHTSA vPIC, decoded from VIN patterns | What the manufacturer filed under the federal VIN rule — a configuration, not the full trim ladder. |
| Measured dimensions | 7 fields | Transport Canada, Canadian Vehicle Specifications | Length, width, height, wheelbase, track and curb weight, measured on the North American versions. |
| Trims, pricing & equipment | none | Manufacturer press kit | We have not transcribed a press kit for this model year yet. This is our gap, not the manufacturer's — the one row here where an empty cell means we are behind. |
Rebuilt nightly; this page was generated 2026-10-26. Every figure above is traceable to the source named beside it, and the JSON for this page carries the same values with their identifiers.
Sources & method
Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). The most serious recall counts in full and each further one counts 85% of the one before, because a vehicle sold in millions is recalled more often than a rare one without being more dangerous — and because a flat subtraction bottomed the scale out, scoring a vehicle with 22 recalls within a point of one with six. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Read it as what it counts: recall campaigns on the federal record, weighted by severity. The damping reduces the sales bias by roughly 40% but does not remove it: like our complaint counts, this is not normalized by how many were sold, so a best-seller still scores somewhat worse than an obscure model with the same real risk. NHTSA crash ratings, do-not-drive and park-outside advisories, and the crash, fire, injury and death counts in owner complaints are reported separately on every page and never blended into the letter — a vehicle can hold five stars and a poor letter at once, and where that happens we say so rather than leave you to notice. Because the scale subtracts from a clean sheet, a model year too new to have been recalled, complained about or bulletined scores full marks on an empty record; we label those grades provisional rather than present them as earned.
EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed nightly.