Sourced fact
A conclusion is no broader than the admitted source population, period, jurisdiction and metric definition.
Driver and Vehicle Standards Agency: DVSA anonymised MOT testing data results
Maintenance · UK
Editorial principles for UK EV evidence
We publish a conclusion only when its source, date, scope, method and limitation remain visible. Unknown is not zero, and an estimate is never relabelled as a measurement. If evidence and the E3 safety contract differ, the stricter publishable boundary controls.
Driver and Vehicle Standards Agency: DVSA anonymised MOT testing data results
Reviewed
Key facts and evidence
For UK EV decision content reviewed on 13 August 2026, EV Evidence publishes only claims that retain source, date, scope, method and limitation. Unknown is not zero, an estimate is not a measurement, and operator-reported, observed, measured and modelled values remain separate. The limit is the admitted evidence: absent or conflicting support closes the claim rather than inviting inference.
Driver and Vehicle Standards Agency: DVSA anonymised MOT testing data results
Sourced fact
Missing, unavailable, suppressed or unobserved data stay explicitly unknown and are not encoded as zero.
Driver and Vehicle Standards Agency: DVSA anonymised MOT testing data results
Sourced fact
Operator-reported, observed, measured and modelled values are labelled separately because they answer different questions.
Driver and Vehicle Standards Agency: DVSA anonymised MOT testing data results
Sourced fact
Where a general source permits more than the current E3 safety contract, EV Evidence publishes the stricter boundary.
Driver and Vehicle Standards Agency: DVSA anonymised MOT testing data results
How EV Evidence separates facts, estimates and unknowns while applying evidence limits and the stricter E3 safety boundary.
Claim admission
A claim enters a page only when an admissible source supports the same object, UK jurisdiction, date or period, unit and definition. A citation to a related topic is not enough, and a source link is evidence rather than endorsement.
Missing values
Unknown, not reported, not observed yet, not applicable, licence-withheld and suppressed-small-sample are distinct states. None becomes zero, an empty string or a fabricated average. A dependent calculation, score or recommendation is removed when its required input is unavailable.
Evidence labels
Operator-reported describes a value supplied by an operator; observed describes a recorded event or status; measured describes a stated instrument or test result; modelled describes an output derived from assumptions or a transformation. Estimates retain their method and never become measurements through repetition.
Safety precedence
Editorial confidence cannot relax an E3 class, DIY ceiling, stop condition, warning set or professional hand-off. Unresolved conflicts select the stricter conclusion, and a missing action row produces no consumer procedure.
What to do next
Use these principles to interpret published evidence, not to diagnose, repair, charge or move a vehicle.
Immediate action: Check the claim label, source date, scope and limitation before relying on a conclusion.
- Stop relying on the claim if its source is stale, absent, contradictory or outside the stated scope.
Professional hand-off
- Send evidence disputes to editorial review; send vehicle, charging or safety decisions to the suitably qualified professional named on the relevant action page.
Questions this record can answer
What does the sourced evidence say about claim admission?
A claim enters a page only when an admissible source supports the same object, UK jurisdiction, date or period, unit and definition. A citation to a related topic is not enough, and a source link is evidence rather than endorsement.
What does the sourced evidence say about missing values?
Unknown, not reported, not observed yet, not applicable, licence-withheld and suppressed-small-sample are distinct states. None becomes zero, an empty string or a fabricated average. A dependent calculation, score or recommendation is removed when its required input is unavailable.
What does the sourced evidence say about evidence labels?
Operator-reported describes a value supplied by an operator; observed describes a recorded event or status; measured describes a stated instrument or test result; modelled describes an output derived from assumptions or a transformation. Estimates retain their method and never become measurements through repetition.