Key facts
- Dataset: NHTSA ODI COMPLAINTS_RECEIVED period files (2015-2019, 2020-2024, 2025-2026), retrieved and processed 2026-09-14. Newest filing in the corpus is dated 2026-09-08.
- N = 776,375 distinct vehicle complaints (PROD_TYPE=V, deduplicated on complaint ID) drawn from 1,086,951 component rows.
- Corpus-wide, 19.7% (152,796) of complaints reference an existing recall — roughly one in five, not "half."
- Most contaminated of the seven categories audited: fuel system (gasoline), 63.1% recall-referencing. Airbags, 47.6%. Least contaminated: crash-injury, 10.4%. Fuel's lead is not robust to how the brake category is defined — see Method.
- One recall dominates fuel: Honda's in-tank fuel-pump campaign 23V858 (2,490,460 vehicles) supplies 17.5% of the entire fuel-system bucket — the most concentrated single campaign in any category.
- 5 of 7 categories flip at least one "most-complained-about model" ranking once recall correspondence is removed. Electrical and crash-injury hold on both.
- News peg: Ford 26V578 (223,472 MY2023-2027 F-150, fuel-tank straps; owner letters expected 2026-09-21) and Jeep/Chrysler 26V562 (328,381 Grand Cherokee, rear coil springs; interim letters expected 2026-09-29) are pouring fresh recall correspondence into the same complaint stream.
- All contamination figures are conservative lower bounds — the text-matching classifier misses some recall references.
By the numbers
- 776,375 distinct vehicle complaints audited (1,086,951 component rows before de-duplication).
- 152,796 / 19.7% reference an existing recall corpus-wide.
- 63.1% — fuel system (gasoline), the most contaminated of the seven categories as defined here (joint-highest with hydraulic brakes once NHTSA's two brake strings are scored separately; see Method).
- 47.6% — airbags (at least; the true share is higher, see method note).
- 17.5% — share of the entire fuel bucket supplied by one campaign, Honda 23V858.
- 3 of 7 categories change volume leader after recall complaints are stripped; 4 of 7 change share leader; 5 of 7 flip at least one.
Based on 776,375 distinct NHTSA ODI vehicle complaints across seven COMPDESC categories, computed by Zilocar from the three COMPLAINTS_RECEIVED period files (max filing dates 20191231 / 20241231 / 20260908), retrieved 2026-09-14. Frozen results CSV linked in Sources.
Do NHTSA complaint numbers mean a used car is unreliable?
Not on their own. A raw NHTSA complaint count blends two very different things: owners reporting a fault they experienced, and owners logging a note about a recall — a letter that arrived, a remedy that was delayed, a part on backorder. Across the whole database, 19.7% of complaints reference an existing recall rather than an independent fault. In some categories it is a clear majority. So a scary count can measure a car's recall reach and its sales popularity as much as its reliability.
Two structural caveats compound this. Complaints are counts, not rates — there is no sales denominator in the data, so a common nameplate draws more complaints than a rare one regardless of quality. And large recalls generate a burst of correspondence that lands in the same totals used to build "most-complained-about" lists. This is the same confound we found when we asked whether owner complaints predict a car recall: the recall and the complaints feed each other.
Are complaints about recalls counted in a car's NHTSA complaint total?
Yes. NHTSA's Office of Defects Investigation records what owners submit in free text, and owners routinely use the complaint form to document recall experiences — citing a campaign number, describing a notification letter, or reporting that the remedy part is unavailable. Those entries are not separated out; they sit in the same COMPDESC categories and the same model totals that third-party "most-complained-about" rankings count. That is why a single mega-recall can visibly move a model up a leaderboard.
Which NHTSA complaint categories are most inflated by recall paperwork?
Fuel system (gasoline) is the most contaminated category at 63.1% recall-referencing, followed by airbags at 47.6%. The remaining categories fall well below half: electrical 19.3%, brakes 18.2%, suspension 16.8%, engine 14.6%, and crash-injury 10.4% (least contaminated). We tested the "most contaminated" and "biggest single campaign" claims against all seven buckets. Fuel wins the single-campaign claim outright. On contamination it wins as these seven categories are defined, but not unconditionally: our "service brakes" bucket is a prefix match that merges NHTSA's two separate brake strings, and the smaller of them, SERVICE BRAKES, HYDRAULIC (7,420 complaints), runs about 63% on its own — level with fuel. Read fuel and hydraulic brakes as joint-highest rather than crowning one — Honda's 23V858 fuel-pump recall alone accounts for 17.5% of the fuel category, while every other category's top campaign sits below 2.6%.
| Category (COMPDESC bucket) | Complaints | Recall-referencing | Contam. rate | Top campaign (share of bucket) | Volume leader as-filed | Volume leader after strip | Volume flips? |
|---|---|---|---|---|---|---|---|
| Fuel system, gasoline | 7,304 | 4,608 | 63.1% | Honda 23V858 (17.5%) | Honda CR-V (429) | Ford Escape (93) | YES |
| Air bags | 97,894 | 46,590 | 47.6% | Ford 16V384 Takata (2.6%) | Toyota Corolla (3,880) | Ford Fusion (1,297) | YES |
| Electrical system | 137,512 | 26,522 | 19.3% | Chrysler 14V373 (1.8%) | Jeep Grand Cherokee (5,549) | Jeep Grand Cherokee (2,564) | no |
| Service brakes | 70,263 | 12,759 | 18.2% | Kia 23V652 (0.9%) | Ram 2500 (2,996) | Chevrolet Silverado 1500 (1,998) | YES |
| Suspension | 30,910 | 5,206 | 16.8% | Toyota 14V604 (1.1%) | Ford F-250 SD (1,806) | Ford F-250 SD (1,700) | no |
| Engine | 157,148 | 22,925 | 14.6% | Ford 23V905 (0.6%) | Ford Escape (7,133) | Ford Escape (6,225) | no |
| Crash / injury (severity flag) | 40,259 | 4,195 | 10.4% | Chrysler 15V313 Takata (0.2%) | Jeep Grand Cherokee (960) | Jeep Grand Cherokee (812) | no |
| Corpus (all buckets) | 776,375 | 152,796 | 19.7% | — | — | — | — |
Only the fuel bucket clearly exceeds half. Airbag sits just under half here and is higher in reality — our classifier misses brand-name-only references ("Takata" with no "recall" token), so a broader any-mention variant reads airbag near two-thirds. The corpus-wide "half is recall paperwork" framing is therefore true only for specific categories, not the database as a whole.
Which "most-complained-about model" rankings flip when recall mail is removed?
Five of the seven categories change at least one leaderboard once recall-referencing complaints are stripped out — direct evidence that the raw counts partly rank recall size rather than reliability. On volume, the top model changes in fuel (Honda CR-V to Ford Escape), airbags (Toyota Corolla to Ford Fusion), and brakes (Ram 2500 to Chevrolet Silverado 1500) — the same reversal we saw ranking used cars with the most brake failure complaints. On share of a model's own complaints, the leader changes in airbags, fuel, suspension, and engine.
Two categories hold on both measures. Our ranking of used cars with the most electrical problems is unchanged (Jeep Grand Cherokee on volume, Kia EV6 on share), and so is crash-injury (Jeep Grand Cherokee on volume, Tesla Model Y on share). The list of used cars with the most engine failure complaints also keeps its volume leader (Ford Escape) even though its share leader flips. Where a ranking survives the strip, the signal is more likely to be about the car; where it flips, the original ranking was measuring the recall.
How do I tell a real defect complaint from a recall-correspondence complaint on NHTSA?
Read the narrative, not the count. A recall-correspondence complaint typically names a campaign number (like 23V858 or 26V578), describes a letter or notification, mentions a "remedy," or reports a part on backorder — often without describing a fault the owner actually experienced. A defect complaint describes a symptom: a leak, a stall, a warning light, a noise, a failure to start.
Our classifier applies exactly that logic. A complaint is counted as recall-referencing if its free text matches a campaign-number pattern (\d{2}[VES]\d{3}), uses safety-recall language (the word "recall" near notice/letter/campaign/remedy/repair/issued/received/subject-to/part-of), says "remedy," or reports a part as unavailable or backordered. The reported rates are conservative lower bounds: the pattern misses references phrased outside it (for example "recall has been issued") and brand-name-only mentions, which biases contamination downward — most for airbags. Treat the loose contamination share as the primary metric; a stricter "recall note with no fault described" cut exists in the data but over- and under-counts on component nouns and is illustrative only.
Does the Ford F-150 or Jeep Grand Cherokee recall mean I shouldn't buy?
Neither recall is, by itself, a reason to walk away — and both illustrate why this week's rankings need reading with care. Ford's 26V578 covers 223,472 MY2023-2027 F-150s whose fuel tank may be improperly secured; the free remedy is to inspect and replace the fuel-tank straps, owner letters are expected 2026-09-21, and VINs became searchable on NHTSA.gov on 2026-09-14. It is not a do-not-drive or park-outside order. Jeep/Chrysler's 26V562 covers 328,381 Grand Cherokee, Grand Cherokee L and 4XE units for rear coil springs that may be incorrectly installed; the free remedy replaces the rear lower isolators, interim letters are expected 2026-09-29, and it supersedes earlier campaigns 26V051 and 23V413 (vehicles fixed under those need the new remedy).
Both recalls will generate a wave of owner correspondence over the coming weeks — exactly the recall paperwork that inflates fuel and suspension complaint counts. What matters for a specific truck or SUV is whether that VIN's recall is open and whether it has been repaired, not the model's aggregate complaint tally.
What a VIN check can and can't tell you here
A Zilocar VIN check is a per-car complement to this model-level analysis, and its honest role here is specific. It can confirm whether a specific vehicle sits inside an open safety recall and how many are attached — the same presence signal as NHTSA's free VIN look-up — and it adds accident and damage records (including airbag-deployment status), an odometer/rollback check, theft (NICB) and junk/salvage auction records, ownership history, and sales-listing history. It does not map a VIN to complaint counts and does not filter recall correspondence out of a model's complaint total; that de-confounding is what this dataset does at the model level, not something any per-car report does.
| Question | VIN check | Where to confirm |
|---|---|---|
| Is this car under an open recall (e.g. 26V578, 26V562)? | Yes — recall presence/count | NHTSA VIN look-up; Zilocar |
| Was the recall actually repaired/flashed? | No | Franchise dealer or manufacturer owner portal |
| Is this model heavily represented in NHTSA complaints? | Not per VIN | This model-level analysis |
| How much of that count is recall paperwork vs. faults? | No | This analysis |
| Is there an open NHTSA investigation (PE/EA)? | No | NHTSA.gov |
| Accident, airbag deployment, salvage-auction, odometer, ownership, listing history? | Yes | Zilocar |
Because a recall count and a complaint count both climb after a big recall, remedy confirmation is the piece that actually protects a buyer — and that is exactly what a VIN check cannot show. For why an unrepaired recall persists on a used car, see does a completed recall mean a used car is fixed. Confirm remedy status with a franchise dealer using the VIN.
A Zilocar VIN check screens a specific car for recall presence and pulls its accident, airbag-deployment, salvage-auction, odometer, theft, ownership and sales-listing history, plus specs, NHTSA and IIHS safety ratings, and a market valuation. It does not confirm a recall was remedied, track NHTSA investigations, show firmware status, or classify the legal title brand — check those with NHTSA and a dealer.
