Model year report

2001 Hyundai Sonata: what breaks, and at what mileage

What breaks on the 2001 Hyundai Sonata

On the 2001 Hyundai Sonata, the failure owners report most often is control arm, ball joint or bushing failure, and the reports cluster around 112,500 miles. The earliest to appear is airbag warning light or occupant sensor fault, reported by a median of 20,000 miles. Overall it scores 66 out of 100, high risk for a 2001.

High risk for a 2001 — 196th riskiest of the 320 2001 vehicles we can rate. 293 owner reports; fleet size estimated from this year's own recall paperwork.

What owners report breaking

Owners have reported 37 named failure modes on the 2001 Hyundai Sonata, and the three most-reported carry 34% of everything filed, which is an unusually even spread for one model year.

Control arm, ball joint or bushing failure leads with 47 reports, about 1.3 per 1,000 vehicles and with the middle half of reports between 89k to 120,000 miles.

Other body or interior problem follows with 35 reports, usually reported between 92k to 150,000 miles.

Rust or structural corrosion follows with 19 reports, usually reported between 85k to 170,000 miles.

By system, the reports fall mostly into suspension (57), body (55) and engine (30).

At what mileage it happens

196 of the reports on the 2001 Hyundai Sonata came with an odometer reading, and half of those were filed before 90,000 miles.

Cumulatively, 20% by 50,000 miles, 56% by 100,000 miles and 85% by 150,000 miles of the dated reports had been filed, with 3 filed above the top of the chart.

The busiest stretch is between 80,000 and 90,000 miles, which alone holds 11% of the dated reports.

15% of the dated reports were filed below 36,000 miles.

In the order they tend to show up: airbag warning light or occupant sensor fault around 18k, control module (ECM/PCM/BCM) failure around 56k, other suspension problem around 105k and control arm, ball joint or bushing failure around 112k.

Median

Control arm, ball joint or bushing failure

112k
Other body or interior problem

119k
Rust or structural corrosion

130k
Airbag warning light or occupant sensor fault

18k
Timing chain, belt or tensioner failure

54k
Other engine problem

63k
Other suspension problem

105k
Control module (ECM/PCM/BCM) failure

56k
Other powertrain problem

72k
Other speed control problem

124k
Engine sensor failure

80k
Premature brake pad or rotor wear

40k

Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens

Showing the 12 most-reported failure modes of 37. The full list is in the table below.

How reports accumulate

Share of reports filed by each mileage

half by 89.9k

Every report with an odometer reading, cumulative, from 0 to 200,000 miles. A further 3 reports came in above that, which is why the line stops short of the top. A curve that climbs early is a car with early problems, whatever its total.

Line share of reports filed by that mileage
Dashed the median reported mileage

What happens when these parts fail

Across the named modes, 24 mention a crash and 18 an injury. Those are the words owners used in their own complaints, and NHTSA does not verify them, but they are the closest thing in this data to a measure of what a failure actually did.

The average severity weight across every report on this year is 4.97, where a stalled engine or a failed airbag weighs many times more than a rattling trim panel, and a figure this high means the reports are dominated by failures with safety consequences rather than annoyances. The weighting is set out in full on the methodology page.

What the top failures cost to put right, as editorial estimates for an independent US shop rather than figures from NHTSA: control arm, ball joint or bushing failure at $400–$2,200, other body or interior problem at $200–$2,000, rust or structural corrosion at $500–$6,000 and airbag warning light or occupant sensor fault at $300–$1,600. Dealer labour, a seized bolt or a part that is no longer made can push any of these past the top of its range.

17% of the reports on this year sit in the engine, transmission, drivetrain or cooling systems — the four where a repair bill is usually four figures.

Every reported failure mode

Mileage figures are percentiles of owner-reported readings. Click a column to sort.
Failure mode	System	Reports	With reading	25th	Median	75th	Per 1,000	Typical repair	Severity
Control arm, ball joint or bushing failure	suspension	47	37	89k	112k	120k	1.3	$400–$2,200	High
Other body or interior problem	body	35	24	92k	119k	148k	1.0	$200–$2,000	Moderate
Rust or structural corrosion	body	19	17	85k	130k	170k	0.5	$500–$6,000	High
Airbag warning light or occupant sensor fault	airbag	18	12	13k	18k	74k	0.5	$300–$1,600	High
Timing chain, belt or tensioner failure	engine	14	5	—	54k	—	0.4	$1,200–$4,500	Critical
Other engine problem	engine	13	6	—	63k	—	0.4	$300–$4,000	High
Other suspension problem	suspension	10	8	89k	105k	119k	0.3	$350–$2,000	Moderate
Control module (ECM/PCM/BCM) failure	electrical	9	9	29k	56k	70k	0.2	$700–$3,000	High
Other powertrain problem	transmission	9	5	—	72k	—	0.2	$400–$4,500	High
Other speed control problem	adas	8	1	—	124k	—	0.2	$250–$2,000	Critical
Engine sensor failure	electrical	7	7	—	80k	—	0.2	$180–$900	Moderate
Premature brake pad or rotor wear	brakes	7	5	—	40k	—	0.2	$300–$1,400	Moderate
Complete transmission failure	transmission	6	3	—	20k	—	0.2	$2,800–$8,000	Critical
ABS module or sensor failure	brakes	6	3	—	42k	—	0.2	$500–$2,400	High
Airbag failed to deploy in a crash	airbag	6	4	—	63k	—	0.2	$1,000–$5,000	Critical
Other brake problem	brakes	6	2	—	58k	—	0.2	$300–$1,800	High
Other visibility problem	glass	6	2	—	58k	—	0.2	$150–$1,400	Moderate
Wiring harness or short circuit	electrical	4	1	—	62k	—	0.1	$400–$3,500	High
Brake line, hose or caliper failure	brakes	4	4	—	162k	—	0.1	$250–$1,600	Critical
Other electrical problem	electrical	4	2	—	44k	—	0.1	$250–$2,000	Moderate
No-start or intermittent start failure	engine	3	3	—	153k	—	0.1	$200–$1,800	Moderate
Transmission will not engage a gear	transmission	3	3	—	67k	—	0.1	$1,500–$6,000	Critical
CV axle or driveshaft failure	drivetrain	3	3	—	151k	—	0.1	$450–$2,200	High
Fuel tank, filler or EVAP failure	fuel	3	1	—	143k	—	0.1	$250–$1,800	Moderate
Ignition switch, key fob or immobilizer failure	electrical	3	3	—	28k	—	0.1	$250–$1,500	High
Parking brake failure	brakes	3	1	—	82k	—	0.1	$250–$1,300	Moderate
Other wheel or tire problem	wheels	3	2	—	118k	—	0.1	$200–$1,500	High
Fuel pump failure	fuel	2	2	—	111k	—	0.1	$600–$2,600	High
Loss of braking	brakes	2	2	—	136k	—	0.1	$400–$3,000	Critical
Steering rack, gear or tie rod failure	steering	2	1	—	65k	—	0.1	$700–$2,600	High
Other fuel system problem	fuel	2	2	—	58k	—	0.1	$300–$2,200	High
Other steering problem	steering	2	1	—	196k	—	0.1	$350–$2,400	High
Fuel leak or fuel odor	fuel	1	1	—	79k	—	0.0	$300–$2,500	Critical
Seat belt or retractor failure	airbag	1	1	—	201k	—	0.0	$200–$900	High
Steering column or shaft failure	steering	1	1	—	223k	—	0.0	$600–$2,500	Critical
Window regulator or power window failure	body	1	1	—	62k	—	0.0	$250–$900	Moderate
Air conditioning failure	hvac	1	0	—	—	—	0.0	$400–$2,800	Moderate
Unclassified problem	other	19	11	48k	120k	140k	0.5	—	Moderate

Rate per 1,000 uses a fleet-size estimate derived from recall paperwork for this exact model year. It is a lower bound. Repair costs are typical independent-shop ranges for the failure, not figures from these reports.

How often, against how many were built

Scaled by an estimate of how many of these cars exist, the 2001 Hyundai Sonata draws about 8.1 per 1,000 vehicles, which puts it in the 85th percentile of complaint rates among 2001 vehicles we can rate.

That denominator is the weakest number on the page and it is fair to say so plainly. Rate per 1,000 uses a fleet-size estimate derived from recall paperwork for this exact model year. It is a lower bound.

The working figure is 36,338 vehicles. If the true number is twice that, every rate on this page is half what it says; the ranking against other 2001 vehicles, which is what the risk score uses, is far more robust than the rate itself.

What owners wrote

Verbatim from NHTSA complaint narratives, trimmed for length. The odometer reading is the one the owner gave.

Control arm, ball joint or bushing failure

Tl*the contact owns a 2001 hyundai sonata. While changing the oil in the vehicle, the contact noticed that the sub frame near the engine was corroded. He touched the sub frame and his hand went straight through. The vehicle was taken to a dealer and they stated that he lived in a rust belt and discovered that the control arm was held in place by only one bolt. The vehicle was repaired by taking a sub frame from a salvaged vehicle. The current mileage was 83,959 and failure mileage was 83,949. Updated 12/12/2007 *bf updated 12/12/07 *tr

83,949 miles NHTSA complaint 638667 filed 2007-09-14

2000 hyundai sonata with a defective sub frame. Consumer would like to be reimbursed for expenses on the repair of the sub-frame. He also believes that hyundai needs to put out a recall on them and get them fixed due to concerns with the sub-frame.*kb the consumer stated as he was driving, the lower control arm of the front passenger wheel disconnected from the vehicle which caused him to slide to an immediate halt. The cause of the failure was due to a poorly designed frame which rusted and rotted so badly that the control arm had fallen off the frame, the axle ripped from the transmission and the wheel had slammed into the wheel housing and quarter panel. The insurance company declared the vehicle a total loss due to the extent of the damage prior to the frame damage, the consumer experienced a flat tire which was due to excessive wear on the inside of tire. *jb

90,426 miles NHTSA complaint 645378 filed 2007-11-08

Rust or structural corrosion

I purchased my 2001 hyundai sonata gls v6 in 2002 and have had nothing but problems from it, but this is the worst so far. My car started jerking terribly when I hit any kind of bump or uneven pavement and my steering wheel was off center when driving straight. I had someone look underneath the car and noticed the frame was rotting, therefore I was driving it to my mechanic and as I pushed the brake to stop, the right/front wheel separated from the frame/axle. There was corrosion on the frame around the axle. I called hyundai and they gave me a claim # and said someone would contact me within 3-5 business days, so we will see. *tr

114,000 miles NHTSA complaint 697134 filed 2008-11-20

I purchased my 2001 hyundai sonata gls v6 in 2002 and have had nothing but problems from it, but this is the worst so far. My car started jerking terribly when I hit any kind of bump or uneven pavement and my steering wheel was off center when driving straight. I had someone look underneath the car and noticed the frame was rotting, therefore I was driving it to my mechanic and as I pushed the brake to stop, the right/front wheel separated from the frame/axle. There was corrosion on the frame around the axle. I called hyundai and they gave me a claim # and said someone would contact me within 3-5 business days, so we will see. *tr

114,000 miles NHTSA complaint 697135 filed 2008-11-20

Recalls on the 2001 model year

NHTSA has issued 3 recall campaigns covering the 2001 Hyundai Sonata, affecting an estimated 78,623 vehicles. A recall is a different kind of evidence from a complaint: it is the regulator and the manufacturer agreeing that something has to be fixed, and the fix is free for as long as the car exists.

The campaigns cover suspension, air bags:side/window and air bags. Whether the work was actually done on the car in front of you is a question only the VIN can answer, and the manufacturer or NHTSA will answer it free.

Recalls also distort complaint counts. Publicity about a campaign reminds owners that complaining is possible, so reports for a recalled component often spike after the recall rather than before it.

09V124000

SUSPENSION

188,282 vehicles 2009-04-16

Defect: Hyundai is recalling 188,282 my 2001-2004 sonata and my 2001-2004 xg300 and xg350 vehicles originally sold in or currently registered in the states of connecticut, delaware, illinois, indiana, iowa, maine, maryland, massachusetts, michigan, minnesota, missouri, new hampshire, new jersey, new york, ohio, pennsylvania, rhode island, vermont, west virginia, wisconsin, and the district of columbia. Road salt applied in these jurisdictions during the winter months may result in progressive, internal corrosion of the front sub-frame on the vehicles, and may result in thinning…
Consequence: If that happens, the vehicle may lose drive power to the wheels, and the front wheel may make contact with the fender or wheel well, thereby increasing the risk of a crash.
Remedy: Dealers will measure the thickness of the front sub-frame and inspect the front sub-frame for corrosion damage and, if necessary, the front sub-frame will be replaced with a new sub-frame that incorporates additional holes in the upper and lower panels. If the front sub-frame does not require replacement, the dealer will add drainage holes to the sub-frame and will treat the sub-frame with rust-proofing material to stop the corrosion process. This procedure will be performed free of charge. The recall is expected to begin during april 2009. Owners may contact the hyundai…

02V105000

AIR BAGS:SIDE/WINDOW

145,355 vehicles 2002-04-09

Defect: On certain passenger vehicles, an intermittent condition that leads to the supplemental restraint system (SRS) air bag warning light illumination could result from motion of the side impact air bag wiring harness and side impact air bag wiring harness connector which mount to the adjustable seat cushion assembly. This condition only relates to the side impact air bags and could prevent air bag deployment during a crash where such deployment should occur.
Consequence: Non-deployment of the SRS side impact air bag could increase the risk of injury during a side impact crash.
Remedy: Dealers will more securely fasten the side impact air bag wiring harnesses and connectors to the vehicle's front seat cushion frames. Owner notification began may 28, 2002. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact hyundai at 1-800-633-5151.

01V347000

AIR BAGS

86,513 vehicles 2001-11-06

Defect: Vehicle description: passenger vehicles. The supplemental restraint system (SRS) air bag warning light could illuminate due to motion of the side impact air bag wiring harness and side impact air bag wiring harness connector that mount to the adjustable seat cushion assembly. This condition only relates to the driver and/or passenger seat-mounted side impact air bag(s).
Consequence: This condition could prevent seat mounted side impact air bag deployment during an accident where such deployment should occur. Non-deployment of the SRS side impact air bags could increase the risk of injury during an accident where side impact air bag deployment is intended.
Remedy: Dealers will more securely fasten the front seat side impact air bag wiring harness and connectors to the vehicle's front seat cushion frames. Owner notification will occur in six mailings on may 27, june 3, june 10, june 17, june 24, and july 1, 2002. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact hyundai at 1-800-633-5151.

Recall work is free at a franchised dealer regardless of the car's age. Check the VIN at nhtsa.gov/recalls before assuming it was done.

How it ranks in the 2001 field

The score at the top of the page, placed among its peers. The zones are the same thresholds the scorer applies, read out of the scorer itself, so the picture and the band word cannot disagree.

Risk score against the rest of the 2001 field

Scores are ranked within the model year, never across years, because an older car has had longer to accumulate reports.

Left fewer and less serious reports
Right more, or worse
Marker this vehicle

How 2001 compares with the other years

High risk for a 2001 — 196th riskiest of the 320 2001 vehicles we can rate. Because the ranking is against the same model year only, age cancels out of it.

Across the 30 model years of this car that carry enough reports to score, 1996 comes out best at 58 and 2022 worst at 81, with 2001 itself at 66.

If the model year is negotiable, 1996, 1998, 2000 and 1997 score lower than 2001 by a margin worth acting on. Same body, same engines, different luck — usually a supplier change or a mid-cycle fix, which the complaint data can show but never explain.

Within the 1999–2005 generation specifically, 2000 is the strongest year at 62 and 2005 the weakest at 72.

Scores compare each year against other cars of the same model year, so a low number on an older car is a real result and not an artefact of age.

Risk score by model year, out of 100

Shorter is better. Years with too few reports to score are shown without a bar rather than as a zero, because no data is not good news.

Within the 1999-2005 generation, 2000 Hyundai Sonata scores best at 62 and 2005 Hyundai Sonata worst at 72.

Where to spend the inspection money

The mileages below are where the first quarter of reports for each mode had already been filed, which makes them the point at which a fault is worth looking for rather than the point at which it happens: airbag warning light or occupant sensor fault from about 13k, control module (ECM/PCM/BCM) failure from about 29k, rust or structural corrosion from about 85k and other suspension problem from about 89k.

On a 2001 Hyundai Sonata with more miles than that on it, the useful question to put to a seller or a mechanic is whether airbag warning light or occupant sensor fault has been dealt with, and if so with what parts and at whose expense. A car that has already had the repair is in a different position from one that has not.

None of this is a diagnosis. It is a list of what other owners of the same model year reported, ordered by when they reported it, which is a good place to point an inspection and a poor place to stop.

What this page cannot tell you

293 owner reports; fleet size estimated from this year's own recall paperwork. Every count on this page is therefore a floor: it is the number of owners who went to the trouble of filing with a federal agency, which is a small and self-selected fraction of the owners who had the fault.

Of those 293 reports, 196 carried an odometer reading, so the mileages here describe 67% of the sample rather than all of it. Owners also round: readings pile up on multiples of ten thousand, which is why this site publishes "about 90,000 miles" and not "91,438".

Named failure modes come from matching phrases in the complaint text, so a badly worded complaint can land in the wrong bucket. The effect washes out across hundreds of reports and does not wash out across five.

And nothing here predicts what one car will do. These are other people's complaints, filed years apart, on cars maintained by strangers. Read the page as a map of where this model year has previously gone wrong, then have the specific car in front of you inspected.

Questions this page answers

What are the most common problems with the 2001 Hyundai Sonata?

The most-reported failures are control arm, ball joint or bushing failure (47 reports, median 112,500 miles), other body or interior problem (35 reports, median 120,000 miles) and rust or structural corrosion (19 reports, median 130,000 miles). Counts come from owner complaints filed with NHTSA, which are voluntary, so they show what owners bothered to report rather than every fault that occurred.

At what mileage do 2001 Hyundai Sonata problems start?

Airbag warning light or occupant sensor fault is the earliest failure mode to show up, with a median reported mileage of 20,000 miles and a quarter of reports before 15,000 miles. Across all failure modes on this year, the median report sits at 90,000 miles.

Is the 2001 Hyundai Sonata reliable?

It scores 66 out of 100 on our risk index, which is high — 196th riskiest of the 320 2001 vehicles we can rate. The score is a comparison against other 2001 vehicles, not a prediction about any individual car, and it is built from complaint rates, severity and how early failures appear.

Which year of the Hyundai Sonata is best?

Within the 1999–2005 generation, 2000 scores best at 62 out of 100 and 2005 worst at 72. Same body, same engines, different luck.

Where this comes from. Every figure above is computed from NHTSA owner complaints and recall records for this exact make, model and year. Complaints are voluntary and self-selected, so treat counts as a floor. The methodology page writes out each formula, and the same numbers are available as JSON.

What breaks at my mileage Compare with another car

Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt 20 August 2026 Published by AtWhatMileage How every figure is computed