2021 Kia Rio
The 2021 Kia Rio is sold in the U.S. as a gas compact sedan. The most efficient version, the Rio, is EPA-rated at 36 mpg combined. NHTSA lists 2 recall campaigns for this model year, 1 rated critical, which gives it a Safety Signal grade of C. Owners have filed 15 complaints, most often about the steering.

Specs & fuel economy
Source: EPA fueleconomy.gov| Configuration | Powertrain | Drive | Engine / motor | City | Hwy | Comb | Annual fuel* |
|---|---|---|---|---|---|---|---|
| Rio | Gas | FWD | 1.6L 4-cyl | 33 | 41 | 36 | $1,850 |
*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 43488.
Emissions & certification
Source: EPA emission certificates| Configuration | Smog rating | Emission standard | Where it can be sold new | SmartWay |
|---|---|---|---|---|
| Rio | 3 / 10 | California LEV-III ULEV125 / Federal Tier 3 Bin 125 | All 50 states (federal, all altitudes); California and states following California standards | — |
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 | Sedan/Saloon |
| Doors | 4 |
| GVWR class | Class 1: 6,000 lb or less (2,722 kg or less) |
Engine Basics
| Cylinders | 4 |
| Displacement | 1.6 L |
Engine Output
| Horsepower | 120 hp |
Fuel Economy
| Fuel | Gasoline |
Seating
| Seat rows | 2 |
| Seating capacity | 5 seats |
Transmission
| Drivetrain | FWD/Front-Wheel Drive |
| Transmission | Continuously Variable Transmission (CVT) |
Driver assistance
Standard: Anti-lock brakes, Backup camera, Electronic stability control, Forward collision warning, Pedestrian automatic emergency braking
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 one configuration rather than every trim (seen: LX, S). Figures for the trim you are looking at may differ.
Dimensions & weight
Source: Transport Canada| Length | 160.2–172.8 in |
| Width (body, without mirrors) | 68.1 in |
| Height | 57.1 in |
| Wheelbase | 101.6 in |
| Track, front | 59.4 in |
| Track, rear | 59.8 in |
| Curb weight | 2,549 lb |
| Weight distribution, front/rear | 57/43 |
Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here 2 configurations: 4-door Sedan, 5-door Hatch. 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 Rio is in the years where transmission, electronics and drivetrain 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 databaseService Brakes, Hydraulic
SC223These 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.
Whether any of this applies to one specific Rio
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 Rio, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.
Parts & accessories for the 2021 Kia Rio
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 Rio →Owner complaints
Source: NHTSA complaint database2 involved a crash · 0 a fire · 0 injuries · 0 deaths reported
6.2 per 10,000 built · Kia reported 24,334 Rio built (its Early Warning production report to NHTSA)
Filed per year: 2021: 1 · 2022: 6 · 2023: 6 · 2025: 2
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.
Steering Gear Assembly completely broke at 81,000 miles. My daughter was backing up in a busy street at 5pm and lost 100 percent of steering control. Lucking cars dodged her and she didn’t get hurt or worse
Placed car in park got out to open a gate. Car took off forward even when shifter was in Park Position and almost ran a child over
Center Console Display blank (screen black) upon startup unable to see cameras and backing up affected creating safety concern
seatbelts in rear are inoperable/anti theft not working. Kia dealership told me that its not their issue about the anti theft. I have been told on 3 separate occasions that my seatbelts have been ordered but they haven’t!!!!
Having been complaining about a noise from under the front right tire, I was initially told it was a little piece of plastic and that got cut off. I was still hear the scraping and squealing and I kept check the from right tire because I thought that's where it was coming from.
I was driving 60-70 miles an hour for 45 minutes then car lost all acceleration and engine light came on. I pulled over immediately turned the car off. Turned it back on drove 1/4 of a mile and same thing happened. I pulled over turned car off and had it towed to the 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: 2 death-or-injury claims on this model year in its quarterly Early Warning reports to NHTSA (49 CFR 579.21): 2 injured, as claimed, not verified — about 8.2 per 100,000 built. Every Rio model year, by year and system → Dated and by system, they are exhibit F of the defect dossier.
Crash ratings
Source: NHTSA NCAPNHTSA has not published 5-Star crash ratings for this model year.
Service bulletins & campaigns
Source: NHTSA manufacturer communicationsMost often about: Electrical System, Structure, Engine, Steering, Equipment.
- CS2311_TSB_R4 Service bulletin2026-06-09 · Structure — Body
- TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION: CYLINDER PROTECTOR & DECAL INSTALLATION (CS2311) - 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 to install a Theft Deterrent Ignition Cylinder Protector on certain 2010-2022MY Kia
- CS2312_TSB_R2 Service bulletin2026-06-08 · Structure — Body
- TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - 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 to install a Theft Deterrent Ignition Cylinder Protector on certain 2010-2022MY Kia
- 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
- 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
- TSB_TRA046_R5 Service bulletin2025-04-17 · Power Train
- TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - 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 relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is
- TSB_ENG222_R8 Service bulletin2025-04-03 · Engine
- TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - 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 on diagnosing and/or repairing some 2011-2024MY vehicles (refer to the table on pages 9 and 10 for applicable models and engine
- TSB_ELE378 Service bulletin2025-03-20 · Electrical System
- TECHNICAL SERVICE BULLETIN: SERVICE ACTION: KIA CONNECT MODEM RESET (SA611) - This bulletin outlines the procedure for resetting the modem in certain 2016-2025MY Kia vehicles listed on page 3 that are equipped with Kia Connect Services. The affected vehicles may encounter the following issues: remote Start/Climate Control function not working, vehicle Status on the Kia Access App not updating, con
- TSB_ENG222_R7 Service bulletin2025-02-28 · Engine
- TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - 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 on diagnosing and/or repairing some 2011-2024MY vehicles (refer to the tables on pages 8-9 for applicable models and engine), w
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.
Rio by model year
all years, side by side →Common questions about the 2021 Rio
Source: EPA, NHTSA and manufacturer press kitsDoes the 2021 Kia Rio have any recalls?
NHTSA has posted 2 recall campaigns for the 2021 Kia Rio, 1 of them rated critical. The most serious on file is 22V304000, covering Steering. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.
How safe is the 2021 Kia Rio?
NHTSA has not published a crash-test rating for the 2021 Kia Rio yet. On the recall record WhichTrim grades it C (78/100), which measures open and severe recalls rather than crash protection.
What is the fuel economy of the 2021 Kia Rio?
For the 2021 Kia Rio, the best EPA combined figure is 36 mpg. Figures are the EPA's own, per configuration, and every one is listed above.
What are the dimensions of the 2021 Kia Rio?
Transport Canada measured it at 160.2–172.8 in long, 68.1 in wide (body, without mirrors), 57.1 in tall, on a 101.6 in wheelbase. Curb weight: 2,549 lb. 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 Rio?
Owners have filed 15 complaints with NHTSA about the 2021 Kia Rio, most often about unspecified, steering, service brakes. Of those, 2 involved a crash. 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 Rio?
The EPA smog rating for the 2021 Kia Rio is 3 out of 10. 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 ULEV125, Federal Tier 3 Bin 125 — which the table above lists per configuration.
Are there service bulletins for the 2021 Kia Rio?
The manufacturer has filed 59 service bulletins and related communications with NHTSA for the 2021 Kia Rio, most often covering electrical system, structure, engine. The most recent is dated 2026-06-09. 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 | 1 configurations | EPA certification records | Every configuration the EPA certified for sale, with its own test figures. |
| Emission certificates | 1 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 | 15 | NHTSA complaint database | Also complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold. |
| Crash ratings | none | NHTSA NCAP | NHTSA has not tested this model year. Cars are selected for testing, so untested is not unsafe. |
| Service bulletins | 59 | NHTSA manufacturer communications | Everything the manufacturer told its dealers about a defect or malfunction, short of a recall. |
| Investigations | none | NHTSA Office of Defects Investigation | No defect investigation has been opened. |
| 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 | 11 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.