⌘K
Home› For experts

Expert work on a defect: the federal record, in order.

For expert witnesses and forensic engineers

The federal record on one defect, in order, cited to the number.

Photo: Dmitrii Filatov / Unsplash

Failure analysis, accident reconstruction and defect opinions start with what NHTSA holds: the manufacturer’s bulletins and coverage programs, the recalls, the investigations and every owner complaint. A WhichTrim defect dossier pulls all of it for one model and one system across every model year from 2006 on, numbers it as exhibits, charts it in date order, and cites each document to its NHTSA number. $79, ready in a minute; billable like any other research cost.

  • IndependentNot affiliated with any automaker, dealer or NHTSA.
  • NHTSA’s own recordRead nightly; every document cited by its NHTSA number.
  • Checkout by StripeNo account needed; your card goes to Stripe, never to WhichTrim.
  • Judge it firstOpen a complete sample dossier, the same file a firm gets.
How WhichTrim works

Inside a dossier: the Chevrolet Silverado’s engine, as an expert gets it

WhichTrim Defect dossier Chevrolet Silverado: Engine every model year from 2006 · every federal filing on the system, numbered as exhibits
A coverage —
B recalls —
C investigations —
D communications —
E complaints —

The record, in order

The chart of every filing by date draws here from NHTSA’s files.

Exhibits

A recall, a bulletin and two complaints from the dossier appear here.
Open a complete sample dossier →
  1. Every filing, counted What NHTSA holds on the Chevrolet Silverado’s engine, each once, with its number.
  2. The record, in order The chart, and how much was already on file when the first bulletin, investigation and recall came.
  3. Exhibits, cited A recall with its defect report, a bulletin with its NHTSA id, a complaint with its ODI number, mileage and state.
  4. Then, further down The complaints that match your client’s facts, the federal dockets on this defect, mileage and place, the reference date.
  5. Take it with you Print it to PDF; download the exhibits and the complaints as CSVs. Yours to reopen.

Pricing for a practice

Source: one payment, or monthly; no account

Three ways to buy. Most firms start with the plan.

Recommended for firms Firm plan $299 a month Unlimited dossiers · pays for itself at four a month
  • Every dossier, for every intake and every case
  • Exhibits and complaints as CSV, the dossier as PDF
  • One invoice a month, on the firm’s books
Billed monthly through Stripe · invoice PDF by email · cancel any time
Dossier pack $199 for three $66 each · $38 less than one at a time
  • Any three models and systems, chosen when a case needs them
  • Each dossier stays yours to reopen
  • Buy once; the firm shares the links
One payment through Stripe · invoice PDF by email · no account
One dossier $79 one case One model, one system, every model year since 2006
  • The record in order, with numbered exhibits
  • The complaints that match your client’s facts
  • Open in the browser the moment you pay
Pick the modelOne payment through Stripe · invoice PDF by email · no account

Not sure yet? Open the complete sample dossier first; it is the same file a firm gets.

What a dossier holds

Source: NHTSA, 49 CFR 573, 579 and 554

The record, in order

A chart of every filing by date, and the first complaint, bulletin, investigation and recall, each with how many complaints were already on file.

Exhibits A to F, cited

Coverage programs, recalls with the defect report and repair rate, investigations, every manufacturer communication, every owner complaint, and the deaths and injuries the manufacturer reported, each once, with its NHTSA number.

Complaints like your client’s

Words from the narrative, a mileage band, a state: the matching complaints, with their exhibit numbers, as their own CSV.

Related federal litigation

The federal dockets naming the manufacturer on this model and system, from the RECAP archive, each linked.

A reference date

Enter the purchase or incident date and the dossier lists what was filed before it and counts the complaints received before it.

Mileage and place, two CSVs, a PDF

The mileage owners report and the states they write from; the exhibits and the complaints as spreadsheets; the whole dossier printed to PDF.

Where it goes in the report

The chronology

The record in order: when the first complaint came, when the first bulletin went to dealers, when NHTSA opened a file, when the recall was filed, with the days between and how many complaints were on file at each step. Exhibit numbers stay fixed across the PDF and the CSVs.

The failure mode

The complaints that match the failure in front of you, by words, mileage band and state, with ODI numbers, as their own CSV: the population for a pattern opinion.

The manufacturer’s own words

Every bulletin and coverage program filed under the system, once, with its NHTSA id, the model years it names and the date: the manufacturer’s contemporaneous description of the problem. And its quarterly Early Warning reports to NHTSA (49 CFR 579.21): every death or injury claim it received on the model and system, dated, by state, with the systems the claimant named.

The citations

Campaign numbers, NHTSA ids, action numbers, ODI numbers: cite the underlying federal record, not the dossier. The sources section names the files (49 CFR 573, 579, 554) and the date of the data.

Questions experts ask

Source: WhichTrim

Can I rely on it in a report?

Rely on the underlying NHTSA records, which the dossier cites by their own numbers and links where NHTSA publishes the document. The dossier is an organised copy of public federal files, rebuilt nightly; it states the date of the data it was built from.

Does it tell me whether a specific vehicle had the recall done?

No. NHTSA's VIN lookup is the only source for a specific vehicle's recall status. The dossier is the record on the model and system.

Are the owner complaints verified?

No. They are allegations filed with NHTSA, which does not verify them, and the dossier labels them that way. Narratives carry the owner's words with personal details removed; the full text is at NHTSA under the ODI number.

How far back does it go?

Every model year from 2006 on. NHTSA's public file of manufacturer communications is thin before 2015, so older model years carry fewer bulletins. Once a dossier is open it can be narrowed to the years of a matter, and a reference date splits the record into before and after.

How do I pay, and can I bill it through?

One payment of $79 per dossier, $199 for a pack of any three, or $299 a month for every dossier a practice needs, through Stripe with no account. Stripe emails an itemised invoice (PDF) for every payment, which most practices pass through as a research cost. For a purchase order write to info@whichtrim.com.

Is this legal or engineering advice?

No. WhichTrim is a data publisher. The dossier organises public federal records and draws no conclusion about any defect.

Counsel on the same matter? The dossier for law firms.