Excessive oil consumption on the 2011 Hyundai Sonata
4 fires 4 of the 59 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
When excessive oil consumption gets reported
Owners of the 2011 Hyundai Sonata report excessive oil consumption at a median of 107,500 miles. A quarter of the reports come in before 80,000 miles and a quarter after 130,000 miles, from 33 reports that carried an odometer reading.
A part like this is normally expected to survive 85,000 miles. It is the 18th most-reported problem on this model year.
The mileage distribution
The reported range runs from 75,000 miles at the tenth percentile to 145,000 miles at the ninetieth, a spread of 70,161 miles across the middle 80% of reports.
A spread this wide points at use rather than design. Towing, climate, service history and city mileage all move a failure like this, so the median is a weak guide to any individual car.
6% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 75,400 miles | 80,000 miles | 108,000 miles | 131,000 miles | 145,561 miles |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Of these reports, 4 a fire is mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $900–$6,500 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 10 model years of this car. It shows up earliest on the 2014, at a median of 45,000 miles, and latest on the 2020 at 200,000 miles.
By volume the 2017 carries the most reports, with 132; the 2011 has 59. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
I have a 2011 sonata,complains of excessive oil burn and loud noise.car burns around 1 quats per 1000 miles.dealer done a oil consumption test and found out its burning too much oil.they wants me to replace the engine.I have done all the oil changes at 3000 miles and its well maintained.dealer said everything is fine with my car as per the 2015 engine recall is concerned.they want me to pay for an engine replacement,when its well known that 2011 sonata engines have manufacturing defect.I found lot of people having same issue end up in engine stall.its a matter of safety.nobody expect a new model car to burn oil like this and dealer will never say that I was low on oil,when I take the car for an oil change.I found out the problem after randomly checking my oil level.it was well below low.all other cars we have need no top up between oil change.I request NHTSA to take this matter seriously.
Engine making a pinging & tapping sound upon acceleration & a regular burnt oil odor engulfing the interior cabin of vehicle while in motion. It is burning excessive oil between 3,000 mile oil changes.
Hyundai recall 132 for metal chips on crankshaft - dealer says car is fine even though it's using a quart of oil every 600-800 miles now, and it keeps getting worse. The car used zero oil until around 77k miles, then the recall came out and it seems the typical response from hyundai is to deny any responsibility for this problem
Also reported on the 2011 Hyundai Sonata
Other steering problem
Other engine problem
Steering column or shaft failure
Airbag warning light or occupant sensor fault
Other electrical problem
Tail light, brake light or signal failure
How far this goes
Complaints are voluntary, so 59 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does excessive oil consumption happen on the 2011 Hyundai Sonata?
Across 33 owner reports that included an odometer reading, half were filed by 107,500 miles. A quarter were filed before 80,000 miles and a quarter after 130,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is excessive oil consumption on the 2011 Hyundai Sonata?
59 reports have been filed with NHTSA, about 0.3 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
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