Japan File

How it works

Japan's registrations come from JADA (Japan Automobile Dealers Association), which publishes a monthly 燃料別メーカー別登録台数（乗用車） file — registrations by fuel type and manufacturer. Each publication is a rolling four-month rollup; we take the newest month. The XLSX is parsed by preference, the PDF is a fallback layout carrying the same data.

Fuel-cell vehicles (ＦＣＶ) and その他 are summed into OTHERS.

The same workbook lists every maker's row, so the fetcher also builds the top-brands tables below (trailing twelve months plus each single month) from it. Each file only holds four months, so the months are kept in market/japan_months.json and the twelve-month view fills up as new files arrive.

Who sells the electrified cars

Whole · last 8 months (2026-01 → 2026-08) · 1,751,075 new registrations in total. Units are registrations; JADA publishes makers, not models, and lumps every imported brand into one row ("IMPORTS (ALL BRANDS)"); TOYOTA includes Lexus. Kei cars are not in these tables either. Powertrain as recorded by the source's own fuel field.

The source does not reach back a full twelve months yet, so the headline view sums the months that exist; it grows to a trailing twelve months as new months arrive.

Show: Last 8 months (2026-01 → 2026-08)August 2026July 2026June 2026May 2026April 2026March 2026February 2026January 2026

Variants

Each variant is its own series with its own CSV. Not every variant is charted in the gallery — the CSV is the authoritative record either way.

History we hold

Every bar is the span actually present in our stored CSV — breaks in a bar are real gaps in the series, not rendering. Cadence is shown on the right.

Whole 2012-01–2026-08 (176 rows). Some rows additionally carry a time_interval of quarterly; the cadence shown is the spacing the periods actually have.

Which fuel columns this source fills

A blank column almost never means "no such cars" — it means this source does not split them out, and those vehicles are counted inside another column. Check the caveats for where they land.

● reported   ◐ column exists but is zero in every row   · not reported by this source. Hover a cell for the row count.

Caveats

• Kei cars (軽自動車) are excluded — the file's own footer says so (「軽自動車は含みません」). Kei cars are roughly a third of the Japanese light-vehicle market, so this is NOT the whole Japanese car market and its BEV share is not comparable with a kei-inclusive figure.
• No kei series is charted, and Whole cannot simply be widened to include kei: kei four-wheelers are reported by a separate body (全国軽自動車協会連合会, Zenkeijikyo), whose monthly figures split only by body type (乗用/貨物), model and prefecture — not by powertrain. With no primary source for a monthly kei BEV/PHEV/HEV split, a kei series could only be approximated by tagging individual models (BEV plus an ICE residual, with no HEV) — below the standard of every other series here. Kei passenger cars are EU M1, the same class as Whole, so this is a coverage gap in Whole rather than a missing vehicle class; adding it properly would need a source publishing the monthly kei powertrain split.
• Delivered as a monthly Excel workbook (PDF fallback).