True Motion Auto ranks sources into four reliability tiers: official/regulatory (highest), established outlets with named sourcing, manufacturer statements (reliable for their own products, treated cautiously for competitor claims), and unverified/anonymous (lowest, requires corroboration before use). At least one Tier 1 or Tier 2 source is required for any factual claim in a published article.
At a glance
| Tier | Examples |
|---|---|
| Tier 1 — Official/regulatory | NHTSA, DVSA, IEA, EPA, government statistics agencies |
| Tier 2 — Established outlets, named sourcing | Major wire services and outlets with clear sourcing standards |
| Tier 3 — Manufacturer statements | Reliable for own-product facts; treated cautiously on competitor claims |
| Tier 4 — Unverified/anonymous | Social media, unverified forums; requires corroboration before use |
Why we tier sources instead of treating them equally
A government regulator's recall notice and an anonymous forum post about the same vehicle are not equally trustworthy, even if they say the same thing. A tiering system makes that distinction explicit and consistent across writers, rather than leaving source judgment to individual instinct on each article.
The four tiers
Tier 1 — Official and regulatory
Government bodies, regulators, and major international agencies — NHTSA, DVSA, the IEA, the EPA, national statistics offices. These are treated as authoritative for the facts within their remit (safety data, regulations, official statistics) and require no additional corroboration on their own.
Tier 2 — Established outlets with named sourcing
Major wire services and outlets that name their sources and have established editorial standards. Reliable for reported facts, though claims attributed to anonymous sources within a Tier 2 outlet are treated with the same caution as Tier 4 unless independently corroborated.
Tier 3 — Manufacturer statements
A manufacturer's own published specifications, pricing, and statements are reliable for facts about their own products, but treated cautiously when a manufacturer makes comparative claims about a competitor's vehicle, since that carries an inherent conflict of interest.
Tier 4 — Unverified and anonymous
Social media posts, unverified forum claims, and anonymous leaks with no track record. These require independent corroboration from a higher tier before appearing in a published article, and are never used as a sole source for a factual claim.
How tiers apply in practice
- Every published factual claim needs at least one Tier 1 or Tier 2 source.
- Tier 3 (manufacturer) claims about their own products can stand alone if clearly attributed as the manufacturer's statement.
- Tier 4 sources are never used alone and require corroboration to be included at all.
- Mixing tiers within an article is fine and common — the goal is transparency about which claims rest on which tier, not avoiding lower tiers entirely.
A source's tier can change claim by claim — a Tier 2 outlet citing an anonymous insider is functionally Tier 4 for that specific claim. We evaluate the claim's actual sourcing, not just the outlet's general reputation.
Frequently asked questions
What counts as a Tier 1 source for automotive news?
Can a manufacturer's own claims be used as a source?
Does True Motion Auto ever use anonymous or social media sources?
What if a reliable outlet cites an anonymous source?
Why does source tiering matter for readers?
Sources & further reading
- The Trust Project — trust indicators for news organizations
- Reuters — Handbook of Journalism (sourcing standards reference)
Figures, prices and policy details were current at the last-updated date above. Automotive pricing, incentives and regulations change frequently — verify time-sensitive details with the linked primary sources. Read our editorial policy and fact-checking standards.
