1998 Hyundai Sonata: what breaks, and at what mileage
What breaks on the 1998 Hyundai Sonata
On the 1998 Hyundai Sonata, the failure owners report most often is other powertrain problem, with 8 reports on file. Across every failure mode on this year, half the dated reports were filed before 80,000 miles. Overall it scores 59 out of 100, elevated risk for a 1998.
Elevated risk for a 1998 — 234th riskiest of the 271 1998 vehicles we can rate. 68 owner reports; fleet size estimated from this year's own recall paperwork.
What owners report breaking
Owners have reported 22 named failure modes on the 1998 Hyundai Sonata, and the three most-reported carry 31% of everything filed, which is an unusually even spread for one model year.
Other powertrain problem leads with 8 reports and about 0.5 per 1,000 vehicles.
Fuel tank, filler or EVAP failure follows with 7 reports, median 90,000 miles.
Door latch or handle failure follows with 6 reports, median 70,000 miles.
By system, the reports fall mostly into fuel (13), body (13) and transmission (10).
The mileage the reports cluster at
23 of the reports on the 1998 Hyundai Sonata came with an odometer reading, and half of those were filed before 80,000 miles.
Cumulatively, 35% by 50,000 miles, 70% by 100,000 miles and 91% by 150,000 miles of the dated reports had been filed, with 2 filed above the top of the chart.
The busiest stretch is between 40,000 and 50,000 miles, which alone holds 26% of the dated reports.
4% of the dated reports were filed below 36,000 miles, so this is mostly a story about older, higher-mileage cars.
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 22. The full list is in the table below.
How reports accumulate
Every report with an odometer reading, cumulative, from 0 to 200,000 miles. A further 2 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
The average severity weight across every report on this year is 3.99, 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: other powertrain problem at $400–$4,500, fuel tank, filler or EVAP failure at $250–$1,800, door latch or handle failure at $250–$1,200 and other visibility problem at $150–$1,400. Dealer labour, a seized bolt or a part that is no longer made can push any of these past the top of its range.
26% 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
| Failure mode | System | Reports | With reading | 25th | Median | 75th | Per 1,000 | Typical repair | Severity |
|---|---|---|---|---|---|---|---|---|---|
| Other powertrain problem | transmission | 8 | 2 | — | 41k | — | 0.5 | $400–$4,500 | High |
| Fuel tank, filler or EVAP failure | fuel | 7 | 2 | — | 90k | — | 0.4 | $250–$1,800 | Moderate |
| Door latch or handle failure | body | 6 | 3 | — | 70k | — | 0.4 | $250–$1,200 | High |
| Other visibility problem | glass | 5 | 1 | — | 43k | — | 0.3 | $150–$1,400 | Moderate |
| Other body or interior problem | body | 5 | 2 | — | 71k | — | 0.3 | $200–$2,000 | Moderate |
| Timing chain, belt or tensioner failure | engine | 3 | 0 | — | — | — | 0.2 | $1,200–$4,500 | Critical |
| Other electrical problem | electrical | 3 | 3 | — | 43k | — | 0.2 | $250–$2,000 | Moderate |
| Stalling while driving | engine | 2 | 2 | — | 282k | — | 0.1 | $300–$2,500 | Critical |
| Complete transmission failure | transmission | 2 | 0 | — | — | — | 0.1 | $2,800–$8,000 | Critical |
| Fuel pump failure | fuel | 2 | 0 | — | — | — | 0.1 | $600–$2,600 | High |
| Fuel leak or fuel odor | fuel | 2 | 2 | — | 108k | — | 0.1 | $300–$2,500 | Critical |
| Steering column or shaft failure | steering | 2 | 0 | — | — | — | 0.1 | $600–$2,500 | Critical |
| Strut, shock or spring failure | suspension | 2 | 2 | — | 100k | — | 0.1 | $500–$2,000 | Moderate |
| Window regulator or power window failure | body | 2 | 0 | — | — | — | 0.1 | $250–$900 | Moderate |
| Other engine problem | engine | 2 | 1 | — | 80k | — | 0.1 | $300–$4,000 | High |
| Other fuel system problem | fuel | 2 | 0 | — | — | — | 0.1 | $300–$2,200 | High |
| Overheating | cooling | 1 | 1 | — | 91k | — | 0.1 | $400–$3,500 | High |
| ABS module or sensor failure | brakes | 1 | 0 | — | — | — | 0.1 | $500–$2,400 | High |
| DPF, EGR or DEF system failure | emissions | 1 | 1 | — | 90 | — | 0.1 | $800–$5,000 | High |
| Other brake problem | brakes | 1 | 0 | — | — | — | 0.1 | $300–$1,800 | High |
| Other steering problem | steering | 1 | 0 | — | — | — | 0.1 | $350–$2,400 | High |
| Other lighting problem | lighting | 1 | 1 | — | 43k | — | 0.1 | $120–$1,200 | Moderate |
| Unclassified problem | other | 7 | 0 | — | — | — | 0.4 | — | 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 1998 Hyundai Sonata draws about 4.1 per 1,000 vehicles, which puts it in the 81st percentile of complaint rates among 1998 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 16,521 vehicles. If the true number is twice that, every rate on this page is half what it says; the ranking against other 1998 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.
Other powertrain problem
When driving out of my parking lot, two pieces of equipment fell off of my vehicle. One looked like a belt and the other a small drum. My automatic transmission would no longer function and I was forced to coast into a parking spot in the lot. *jb
Fuel tank, filler or EVAP failure
Crack in gas tank discovered after several removals of tank to replace hoses, then clamps. Replaced 1998 tank with used tank from 1996 model. Within 3 month replacement tank was leaking from crack in same area as before. Discovered recall on this model and took vehicle to local dealer. Dealer refused to honor recall due to service performed in 2006 where they (supposedly) added check valve to prevent gas tank cracks from developing. Appeals to regional and national hyundai offices were also rejected. Dealer sent me away with seriously leaking / dangerous tank. *tr
Door latch or handle failure
There are many things that have occurred to my hyundai sonata 98 since I got the car as of september 2003. I've had to pay over $700.00 in transmission replacement costs, and fuel injection systems that had previously been fixed at the dealership while warranted (bob ciasulli hyundai). In addition, the driver's side plastic door handle is no longer working which was supposedly fixed by the "dealer service station". Later I found out there has been a recall on most hyundai 98 sonata models for the plastic door latch. I am unable to get out of the driver's side. A safety hazard. And even more frustrated and tired of dealing with bob ciasulli's dealership.
Dt: the drivers side door latch broke. Caller had to roll down the window to get the door opened. For about 6 months the handle had a hairline crack in it, and now the handle had 4 cracks. It is not strong enough to open the latch. Dealer and manufacturerr have not been contacted yet. Also caller had to replace all 4 of the window rollwers. *ak
Recalls on the 1998 model year
NHTSA has issued 1 recall campaign covering the 1998 Hyundai Sonata, affecting an estimated 16,521 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 fuel system, gasoline:storage:tank assembly. 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.
One caution about reading these together: a recall usually raises the complaint count for the same part, because owners who read about it go and file. The mileages stay informative; the counts get noisy.
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
66,086 vehicles 2000-10-02- Defect
- Vehicle description: accent gt model vehicles equipped with dohc engines manufactured from december 19, 1996 through june 30, 1997; 1998 accent model vehicles manufactured from may 6, 1997 through june 25, 1998; 1997 sonata vehicles manufactured from august 1, 1996 through july 9, 1997 and 1998 sonata vehicles produced from july 9, 1997 through april 24, 1998. The evaporative emission control systems may apply excessive vacuum to the fuel tanks during the canister purge cycle. Minor fuel tank distortion could result. A small crack could develop on the upper fuel tank…
- Consequence
- Fuel leakage in the presence of an ignition source can result in a fire.
- Remedy
- Dealers will pressure check the vehicle's fuel tank to determine if it has cracked. If it is cracked, a new fuel tank will be installed. A new fuel filler cap that decreases the amount of vacuum inside the fuel tank will also be installed. Note: the 1997-1998 sonata fuel tanks have also experienced cracking. However, at this time, the cause for the cracking has not been identified. This portion of the campaign will begin after hyundai has determined the cause and corrective procedure.
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 1998 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.
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
Where 1998 sits in the model line
Elevated risk for a 1998 — 234th riskiest of the 271 1998 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 1998 itself at 59.
No other year of this model scores meaningfully better than 1998, so if this generation is what you want, the year is not the lever.
Within the 1996–1998 generation specifically, 1996 is the strongest year at 58 and 1997 the weakest at 62.
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.
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 1996-1998 generation, 1996 Hyundai Sonata scores best at 58 and 1997 Hyundai Sonata worst at 62.
The limits of complaint data
68 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 68 reports, 23 carried an odometer reading, so the mileages here describe 34% 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".
The failure modes are assigned by software reading the owner's own words, which is accurate in bulk and wrong in individual cases. A mode with a handful of reports may contain a misfiled one.
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 1998 Hyundai Sonata?
The most-reported failures are other powertrain problem (8 reports, median 40,000 miles), fuel tank, filler or evap failure (7 reports, median 90,000 miles) and door latch or handle failure (6 reports, median 70,000 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.
Is the 1998 Hyundai Sonata reliable?
It scores 59 out of 100 on our risk index, which is elevated — 234th riskiest of the 271 1998 vehicles we can rate. The score is a comparison against other 1998 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 1996–1998 generation, 1996 scores best at 58 out of 100 and 1997 worst at 62. 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 Published by AtWhatMileage How every figure is computed