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2020 Hyundai Sonata

Hybrid Gas

Large Cars
5 EPA-rated configurations
Data refreshed 2026-10-26

Safety Signal

71 / 100 from the NHTSA recall record

Recalls1 critical 4

Complaints6 crash · 1 fire · 5 injured reported 197

Crash ratingNHTSA overall 5★

Fuel economybest combined, EPA 52 mpg

2027 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016

The 2020 Hyundai Sonata is sold in the U.S. as a hybrid and gas large sedan with 5 EPA-rated configurations. The most efficient version, the Sonata Hybrid Blue, is EPA-rated at 52 mpg combined. NHTSA lists 4 recall campaigns for this model year, 1 rated critical, which gives it a Safety Signal grade of C. Owners have filed 197 complaints, most often about the fuel/propulsion system. NHTSA crash-tested it at 5 stars overall.

Hyundai Sonata — photograph via Wikimedia Commons — Hyundai Sonata · Photo: © M 93 · CC BY-SA 3.0 de · Wikimedia Commons

Specs & fuel economy

Source: EPA fueleconomy.gov

Configuration	Powertrain	Drive	Engine / motor	City	Hwy	Comb	Annual fuel*
Sonata Hybrid Blue	Hybrid	FWD	2.0L 4-cyl + 270V Li-Ion	50	54	52	$1,300
Sonata Hybrid	Hybrid	FWD	2.0L 4-cyl + 270V Li-Ion	45	51	47	$1,450
Sonata	Gas	FWD	2.5L 4-cyl	28	38	32	$2,100
Sonata	Gas	FWD	2.5L 4-cyl	27	37	31	$2,150
Sonata	Gas	FWD	1.6L 4-cyl turbo	27	36	31	$2,150

*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 42476, 42475, 42245, 42244, 42246.

Emissions & certification

Source: EPA emission certificates

Configuration	Smog rating	Emission standard	Where it can be sold new	SmartWay
Sonata Hybrid, Sonata Hybrid Blue	7 / 10	California LEV-III SULEV30 / Federal Tier 3 Bin 30	All 50 states (federal, all altitudes); California and states following California standards	SmartWay Elite
Sonata	7 / 10	California LEV-III SULEV30 / Federal Tier 3 Bin 30	All 50 states (federal, all altitudes); California and states following California standards	SmartWay
Sonata	5 / 10	California LEV-III ULEV70 / Federal Tier 3 Bin 70	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 vPIC

Dimensions Exterior

Body style	Sedan/Saloon
Doors	4
GVWR class	Class 1: 6,000 lb or less (2,722 kg or less)

Engine Basics

Displacement

2.5 L

Fuel Economy

Fuel	Gasoline

Seating

Seat rows	2
Seating capacity	5 seats

Transmission

Drivetrain	FWD/Front-Wheel Drive
Transmission	Automatic
Transmission speeds	6

Driver assistance

Standard: Anti-lock brakes, Backup camera, Electronic stability control

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: Limited, SE, SEL, SEL Convenience, SEL Premium). Figures for the trim you are looking at may differ.

Dimensions & weight

Source: Transport Canada

Length	192.9 in
Width (body, without mirrors)	73.2 in
Height	57.1 in
Wheelbase	111.8 in
Track, front	63.8 in
Track, rear	64.2 in
Curb weight	3,366 lb
Weight distribution, front/rear	60/40

Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here one configuration: 4-door Sedan. 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.

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Recalls (4)

Source: NHTSA recall database

!critical

Fuel System, Gasoline

286

85,043 vehicles 41% reported repaired

Problem Hyundai Motor America (Hyundai) is recalling certain 2020-2023 Sonata vehicles. A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank. Risk A melted fuel tank can leak, increasing the risk of a fire. Fix Dealers will inspect and replace the check valve. The fuel tank assembly will be inspected for damage and replaced if necessary. Additionally, dealers will inspect and update the engine control unit software. All repairs will be performed as necessary, free of charge. Owner notification letters were mailed beginning March 13, 2026. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 286. Vehicle Identification Numbers (VINs) involved in this recall

Filed with NHTSADefect report PDF Owner letter PDF Remedy instructions PDF

NHTSA campaign 25V796000 reported Nov 17, 2025 Hyundai Motor America the full filing, and every vehicle covered →

▲high

Latches/Locks/Linkages

221/010G

63,461 vehicles 89% reported repaired

Problem Hyundai Motor America (Hyundai) is recalling certain 2020 Sonata and Sonata Hybrid, and 2019 Genesis G70 vehicles. The trunk latch may become damaged, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release." Risk A person inside the trunk compartment may become trapped, increasing their risk of injury. Fix Dealers will inspect the trunk latch and replace the trunk latch base, as necessary, free of charge. Owner notification letters were mailed May 26, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 221/010G.

Filed with NHTSARemedy instructions PDF

NHTSA campaign 22V196000 reported Mar 28, 2022 Hyundai Motor America the full filing, and every vehicle covered →

▲high

Electrical System

191

11,870 vehicles 99% reported repaired built Oct 22, 2019 – Mar 10, 2020

Problem Hyundai Motor America (Hyundai) is recalling certain 2020 Nexo and Sonata vehicles. The Remote Smart Parking Assist (RSPA) software may fail to prevent vehicle movement upon detection of an RSPA system malfunction. Risk Unintended vehicle movement increases the risk of a crash. Fix Hyundai will notify owners, and dealers will reprogram the RSPA software, free of charge. The recall began June 3, 2020. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 191.

Filed with NHTSAOwner letter PDF Remedy instructions PDF

NHTSA campaign 20V213000 reported Apr 9, 2020 Hyundai Motor America the full filing, and every vehicle covered →

○minor

Equipment

190

5,044 vehicles 97% reported repaired built Oct 22, 2019 – Feb 13, 2020

Problem Hyundai Motor America (Hyundai) is recalling certain 2020 Sonata vehicles produced between October 22, 2019 and February 13, 2020. The tire pressure label inside the driver's door and the owner's manual state an incorrect tire size. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims." Risk The incorrect tire information may mislead the vehicle owner to install the wrong tire size, potentially affecting vehicle handling, increasing the risk of a crash. Fix Hyundai will notify owners, and dealers will install new label stickers over the tire pressure label and in the owner's manual, free of charge. The recall began April 22, 2020. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 190.

Filed with NHTSAOwner letter PDF Remedy instructions PDF

NHTSA campaign 20V122000 reported Feb 28, 2020 Hyundai Motor America the full filing, and every vehicle covered →

These 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 →

Engine — Loss of Motive Power closed

The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complaints were provided which alleged that the oil drain pans lack sufficient structural integrity and are

Opened Sep 12, 2022 · closed Dec 12, 2023 · action DP22003 · the investigation’s page →

Whether any of this applies to one specific Sonata

A campaign covers a build range, not a model year, so two identical-looking cars from 2020 can differ. Both of these check a VIN against the manufacturer’s own list, free, in about ten seconds. Hyundai publishes its own lookup because federal rule 49 CFR 573.15 requires it to, and to keep it current to within seven days.

NHTSA VIN check →Hyundai’s own VIN lookup →

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 2020 Hyundai Sonata, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.

Owner complaints

Source: NHTSA complaint database

197complaints filed

6 involved a crash · 1 a fire · 5 injuries · 0 deaths reported

31 per 10,000 built · Hyundai reported 63,277 Sonata built (its Early Warning production report to NHTSA)

Filed per year: 2020: 27 · 2021: 18 · 2022: 15 · 2023: 20 · 2024: 44 · 2025: 33 · 2026: 40

Most-cited components

Fuel/Propulsion System → 61

Electrical System 46

Engine 40

Unspecified 32

Power Train 24

Structure 17

In depth: fuel system problems →

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.

On July 15th I was driving away from work and my car suddenly stopped accelerating. I was able to get it towed to a body shop I previously had it repaired at. They said the battery system was blowing a fuse when it would become undrivable.

Engine Aug 22, 2024 NHTSA owner report · ODI 11610285

Over the last 3 months at least a dozen times the 12v auxiliary battery is completely dead after parking the car outdoors for an hour or so. This poses a safety issue, especially at night because you cannot easily access the car. You have to fumble around trying to get the key hole cover off in order to use the key supplied in the fob.

Electrical System Oct 1, 2024 NHTSA owner report · ODI 11617570

Driving on dry road, in middle lane of three lanes going 65 MPH. Suddenly, right rear tire "poofed" but I kept control, started to look right to get off road. Took foot off gas, did not put on brake.

Steering at 2,300 miles May 7, 2021 NHTSA owner report · ODI 11415571

The vehicle's driver side window is not seated properly and has excessive wind noise when driving. Dealership confirms this issue across multiple models in the 2020 and 2021 Hyundai Sonata

Structure at 600 miles Feb 3, 2021 NHTSA owner report · ODI 11394499

Occasionally there is a serious delay when trying to accelerate. Car tends to jerk/buck when accelerating, usually in the lower gears. I have no idea if this is a transmission issue or a fuel injection issue, but my dealership has not been able to detect an issue and keeps telling me everything is normal when it clearly isn't.

Power Train at 2,000 miles Jan 4, 2021 NHTSA owner report · ODI 11386446

I never got what I wanted from Hyundai. I was told that you cannot use a cushion and have a passenger airbag.. I went up to ceo, still same answer. I tried

Air Bags at 1,768 miles Sep 4, 2020 NHTSA owner report · ODI 11353115

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 Hyundai itself: 12 death-or-injury claims on this model year in its quarterly Early Warning reports to NHTSA (49 CFR 579.21): 1 killed, 16 injured, as claimed, not verified — about 19 per 100,000 built. Every Sonata model year, by year and system → Dated and by system, they are exhibit F of the defect dossier.

When owners reported it

Reported at 3k

miles, typically

Half the 54 owner reports with an odometer reading on file fall between 1,000 and 47,000 miles. That is when problems get reported, which is not the same as when they start — and not a failure rate, because nobody knows how many of these cars never had a problem at all.

under 10k 29

10k–20k 6

20k–30k 2

30k–40k 1

40k–50k 5

50k–60k 1

60k–70k 1

70k–80k 1

80k–90k 4

90k–100k 1

100k–150k 3

150k + 0

Median mileage by component

Component	Reports	Median miles	Vs same age
Fuel/Propulsion System	12	80,000	3.11×

Vs same age is this model year’s median for the system divided by the median of every 2020-model-year complaint about the same system, all makes: under 1× means owners of this car reported it at lower mileage. Here, owners reported later: fuel/propulsion system (3.11×). Which systems go early across the whole fleet: the component study.

Across 2018–2020 model years the Hyundai Sonata ranks 31 of 79 nameplates in the odometer-at-first-complaint study: owners reported problems at 0.78× the mileage of vehicles the same age (median 20,000 miles against a fleet 23,512).

Odometer readings as filed by owners with NHTSA. Readings under 100 or over 400,000 miles are dropped as data entry rather than history, and a component needs at least 12 readings before a median is shown for it.

Crash ratings

Source: NHTSA NCAP

Configuration	Overall	Frontal	Side	Rollover	Rollover risk
4 DR FWD	★★★★★	★★★★☆	★★★★★	★★★★★	10%
4 DR FWD	★★★★★	★★★★☆	★★★★★	★★★★★	10%

NHTSA New Car Assessment Program. Standard driver-assist: forward collision warning, lane departure warning, automatic emergency braking.

Driver-assist crash reports (1)

Source: NHTSA Standing General Order 2021-01

1report filed

1 no injury reported

Oct 2023 to Oct 2023 · 0 with an air bag deployment · 0 towed

What was engaged, and what was hit

System named: not named in the filings

Crash partner: Passenger Car 1

Filed by: Avride Inc.

Incident	System	Struck	Injury alleged	State	Speed	Report
Oct 2023	ADS	Passenger Car	no injury reported	TX	25 mph	31101-7044

From the manufacturer’s own filing

The reporting entity’s narrative as NHTSA published it, with anything identifying removed and nothing added. A narrative is a notice, written before the entity had verified what happened.

Our car was moving down the street with approximate speed 25mph when it was tailgated. Our driver was not injured, and the driver in the other car showed no visible injuries. However, she called an ambulance due to her pregnancy. The airbags did not deploy in either vehicle.

Avride Inc. report 31101-7044 Oct 2023 NHTSA SGO filing

A report under the General Order is a notice the manufacturer or operator must file within days of hearing of a crash in which a Level 2 driver-assist or automated-driving system was engaged within 30 seconds of impact. It is filed before anything is verified, and entities with telematics hear of far more crashes than entities that rely on complaints, so counts say as much about the reporting as about the car and are not comparable across makes. Nothing is normalised by fleet size. Every report on file, by make and year → · NHTSA’s page and files

Service bulletins & campaigns

Source: NHTSA manufacturer communications

Communicationsfiled with NHTSA 161

Most recentmanufacturer date 2026-10-08

Kindsas classified by NHTSA 143 service bulletins, 14 service campaigns, 4 others

Most often about: Electrical System, Engine, Power Train, Equipment, Steering.

26-EM-016H TSB Service bulletin
2026-10-08 · Engine
Some vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when dee
26-EM-015H TSB Service bulletin
2026-10-07 · Engine
Certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. All internal combustion engines consume engine oil as part of normal engine operation. Oil consumption rates may vary based on mileage, operating conditions, driving habits, and mainte
11032523 Other
2026-04-10 · Air Bags
The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN). These inflators were not supplied, approved, or authorized by the vehicle manufacturers and have primarily been found in vehicles that previously experienced a crash and
11032522 Other
2026-04-10 · Air Bags
The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN), that have been identified in U.S. vehicles following prior crashes, theft, or non‑certified airbag replacements. These inflators are not approved for use, may
26-AD-001H TSB Service bulletin
2026-02-25 · Exterior Lighting
Some 2019MY and newer vehicles equipped with a front view camera may illuminate certain warning lights and trigger DTC C272246 fault code for the front camera. In the following cases, the front camera auto-calibration range may be exceeded while driving: • If the front camera is not properly installed and is completely or partially detached. • In case of excessive changes affecting the vehicle's b
26-EM-003H TSB Service bulletin
2026-02-05 · Engine
Some Sonata (DN8, DN8A) vehicles may have DTCs P218100, P2181F0, and/or P2181F1 (Cooling System Performance) set in the Engine Control Module, resulting in an illuminated Check Engine warning lamp. Follow the procedure in this TSB to replace the Integrated Thermal Management (ITM) module and update both the Engine Control Module (ECM) and Transmission Control Module (TCM) if applicable. Follow the
25-EM-007H TSB Service bulletin
2025-12-18 · Engine
Some Elantra (CN7, CN7A), Kona (OS, SX2), and Sonata Hybrid (DN8 HEV) vehicles equipped with 2.0L engines may illuminate a warning lamp for DTC P218100 (Cooling System Performance) related to the Integrated Thermal-Management Module (ITM). Follow the service procedure in this bulletin to install a spring onto the thermostat within the ITM, in order to prevent premature opening, and perform an ECU
25-BD-012H TSB Service bulletin
2025-11-06 · Exterior Lighting
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for

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.

Diagnostic trouble codes on file

Source: NHTSA manufacturer communications and complaints

Codes documented against this model year in the federal record. A code appearing here does not mean this vehicle will set it — it means the code is part of this nameplate-year's documented history.

Code	What it means	Most often filed under	Where it appears
P0451 P0451 on Hyundai →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Fuel/Propulsion System · Fuel pump →	5 bulletins
P0456 P0456 on Hyundai →	A very small leak in the evaporative emissions system.	Electrical System · Gas cap →	4 bulletins
P2074 P2074 on Hyundai →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Engine	2 bulletins
P2181 P2181 on Hyundai →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Engine	1 bulletin · 1 owner report

Generic codes (the second character is 0 or 2) mean the same thing on every vehicle sold in the United States. Manufacturer-specific codes (1 or 3) mean whatever the automaker assigned, and no honest source can define them for you — which is why the ones here carry the evidence instead of a definition. A code is a link when enough separate federal documents name it across the catalogue to be worth a page of its own; the rest are listed here, where the vehicle is the context that makes them mean something.

At the New York inspection station

Source: New York State DMV

New York inspections 1.2%

failed emissions

2,083 initial inspections of 2,036 vehicles.

Measure	The 2020 Sonata	Every 2020 vehicle	Behind it
Failed the emissions check	1.2%	2.2%	2,076
Failed the safety inspection	1.8%	1.6%	2,083
Air-bag warning lamp stayed lit	0.10%	0.19%	2,083
Miles driven a year	9,146	9,980	odometer at inspection
Average odometer	57,449	62,630	odometer at inspection

New York’s emissions test on these model years is an on-board diagnostics check: it fails a car whose check-engine light is on or whose self-tests have not finished. First inspections only, so a car that failed and came back is counted once; private and special plates, not taxis, livery or commercial plates. A rate appears only where at least 200 inspections stand behind it. “Every 2020 vehicle” is every 2020 model-year car, SUV and pickup inspected in the same window, all makes. This is the state’s record of test results, not a reliability score by itself. Source: New York State Department of Motor Vehicles, Vehicle Inspections (data.ny.gov, Open NY terms).

Sonata by model year

all years, side by side →

Year Safety Recalls Complaints

2027 A^* 0 0 51 mpg 2026 A 1 6 51 mpg 2025 A 0 28 47 mpg 2024 A 1 55 47 mpg 2023 C 2 103 Park outside 2022 D 3 114 52 mpg 2021 D 4 189 52 mpg 2020 this page C 4 197 52 mpg 2019 A 0 172 42 mpg 2018 B 2 384 42 mpg 2017 C 5 879 42 mpg 2016 D 9 887 41 mpg

Common questions about the 2020 Sonata

Source: EPA, NHTSA and manufacturer press kits

Does the 2020 Hyundai Sonata have any recalls?

NHTSA has posted 4 recall campaigns for the 2020 Hyundai Sonata, 1 of them rated critical. The most serious on file is 25V796000, covering Fuel System, Gasoline. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.

How safe is the 2020 Hyundai Sonata?

NHTSA gave the 2020 Hyundai Sonata 5 stars overall in its New Car Assessment Program tests — 4-star frontal crash, 5-star side crash, 5-star rollover. WhichTrim also grades it C (71/100) on its recall record, which is a different question from crash protection.

What is the fuel economy of the 2020 Hyundai Sonata?

Across the 5 EPA-rated configurations of the 2020 Hyundai Sonata, the best EPA combined figure is 52 mpg. Figures are the EPA's own, per configuration, and every one is listed above.

What are the dimensions of the 2020 Hyundai Sonata?

Transport Canada measured it at 192.9 in long, 73.2 in wide (body, without mirrors), 57.1 in tall, on a 111.8 in wheelbase. Curb weight: 3,366 lb. Those are its measurements of the North American versions; every figure is in the table above.

What do owners complain about on the 2020 Hyundai Sonata?

Owners have filed 197 complaints with NHTSA about the 2020 Hyundai Sonata, most often about fuel/propulsion system, electrical system, engine. Of those, 6 involved a crash, 1 a fire, 5 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 2020 Hyundai Sonata?

The EPA smog rating for the 2020 Hyundai Sonata runs 5 to 7 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 LEV-III ULEV70, Federal Tier 3 Bin 30, Federal Tier 3 Bin 70 — which the table above lists per configuration.

Are there service bulletins for the 2020 Hyundai Sonata?

The manufacturer has filed 161 service bulletins and related communications with NHTSA for the 2020 Hyundai Sonata, most often covering electrical system, engine, power train. The most recent is dated 2026-10-08. 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.

How does the 2020 Hyundai Sonata do at state inspection?

In New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2020 Hyundai Sonata failed the emissions check on 1.2% of first inspections — lower than the 2.2% for every 2020 model-year vehicle inspected; and the safety inspection on 1.8% (every 2020 vehicle: 1.6%). The figures are New York State DMV’s own inspection records, first inspections only, and the table above sets each one against every vehicle of the same model year.

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	4	NHTSA recall campaigns	A complete federal register: every campaign covering this model year, with severity and advisory flags.
Owner complaints	197	NHTSA complaint database	Also complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold.
Crash ratings	2 tested	NHTSA NCAP	Only the configurations NHTSA chose to crash-test, which is never all of them.
Service bulletins	161	NHTSA manufacturer communications	Everything the manufacturer told its dealers about a defect or malfunction, short of a recall.
Investigations	2	NHTSA Office of Defects Investigation	Open and closed defect investigations, with the agency's own narrative.
Driver-assist crash reports	1	NHTSA Standing General Order 2021-01	Crashes the manufacturer or operator reported with a Level 2 or automated-driving system engaged. Notices, filed before verification; not comparable across makes.
Specifications filed with NHTSA	10 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.

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