Why the Australia and Great Britain ATTO 3 records cannot be ranked
Australia reports BYD ATTO 3 registered stock at a census date while Great Britain reports first-registration events in a quarter; matching units do not make the records comparable.
The comparison answer
The records share the unit “vehicles,” but 13,279 registered stock and 778 first registrations answer different questions.
Fact ledger
Original public-display facts. Each row keeps its own definition and evidence route.
- Metric
- Registered vehicle stock
- Period
- 2025-01-31
- Definition
- Registered passenger-vehicle stock for the exact source alias ATTO 3 on the Australian census date; not model sales, deliveries, first registrations or a total across aliases.
- Coverage
- Exact BYD ATTO 3 source alias; other aliases and models are not aggregated into this fact.
- Freshness
- stale · verified 2026-09-06
- Metric
- First registrations
- Period
- 2026 Q1
- Definition
- Vehicles registered for the first time in Great Britain during 2026 Q1 for the exact DfT VEH0160 BYD ATTO 3 generic-model row set; not sales, deliveries, registered stock, or a trim mapping.
- Coverage
- Exact DfT VEH0160 BYD ATTO 3 generic-model row set across four retained detailed-model labels.
- Freshness
- fresh · verified 2026-09-06
What the record establishes
The reviewed identity mapping supports treating both source records as references to the BYD Yuan Plus / ATTO 3 model family in their stated markets.
Australia’s value describes vehicles present in registered stock on 31 January 2025. Great Britain’s value describes first-registration events during 2026 Q1. Preserving both originals is useful; combining them is not.
What it does not establish
No ratio, percentage delta, market ranking, market share, premium, normalised comparison, composite score or overlaid trend can be produced from these two records.
A lower event count over three months cannot be interpreted as a smaller installed fleet, and a stock snapshot cannot be interpreted as sales during a year.
Sources and reuse
Each official fact retains its own licence, attribution and no-endorsement requirement. The page intentionally refuses a derived cross-market result.
- Australian Government Bureau of Infrastructure and Transport Research EconomicsRegistered vehicle stock · 2025-01-31Creative Commons Attribution 3.0 Australia
- UK Department for Transport and Driver and Vehicle Licensing AgencyFirst registrations · 2026 Q1Open Government Licence v3.0
Cite this research note
Use the permanent page URL so readers can inspect definitions and evidence.
China Auto Ledger Research Desk (2026), “Why the Australia and Great Britain ATTO 3 records cannot be ranked”, published 7 September 2026, https://chinaautoledger.com/research/byd-atto-3-australia-great-britain. Australian source licensed CC BY 3.0 AU; Great Britain source contains DfT and DVLA data licensed under OGL v3.0.