Transport & communication · code 7370
Car insurance (compulsory)
自動車保険料（自賠責）
Key facts
As of August 2026, car insurance (compulsory) prices in Japan are flat year on year and down 11.5% over five years. The official consumer price index stands at 78.5 (2020 = 100), down 40.8% versus January 1970, when the series begins.
Car insurance (compulsory) sits in the transport & communication group of Japan's CPI basket, with 680 monthly observations from January 1970 to August 2026. The series peaked at 167.2 in May 1985 and bottomed at 78.5 in April 2023; the latest reading is -53.1% against that peak. Against ten years ago it is -35.6%.
Latest CPI
78.5
2026-08 (2020=100)
YoY %
0.0%
5y change %
-11.5%
Change since 1970-01
-40.8%
Annual average index by year
| Year | Index | YoY % | Months |
|---|---|---|---|
| 2015 | 121.8 | 0.0% | 12 |
| 2016 | 121.8 | 0.0% | 12 |
| 2017 | 115.9 | -4.8% | 12 |
| 2018 | 113.9 | -1.7% | 12 |
| 2019 | 113.9 | 0.0% | 12 |
| 2020 | 100.0 | -12.2% | 12 |
| 2021 | 90.4 | -9.6% | 12 |
| 2022 | 88.7 | -1.9% | 12 |
| 2023 | 81.1 | -8.6% | 12 |
| 2024 | 78.5 | -3.2% | 12 |
| 2025 | 78.5 | 0.0% | 12 |
| 2026 | 78.5 | 0.0% | 8 |
Average of the monthly index values in each year (2020 = 100). Blank months are excluded.
Frequently asked questions
- How much have car insurance (compulsory) prices changed in Japan over the past year?
- As of August 2026, 0.0% year on year, measured by Japan's official consumer price index (2020 = 100).
- How much have car insurance (compulsory) prices changed in Japan over the past five years?
- -11.5% compared with the same month five years earlier. The index now reads 78.5.
- When were car insurance (compulsory) prices in Japan at their highest?
- The series peaked at 167.2 in May 1985. The latest reading is -53.1% against that peak.
- What is the difference between the index and the yen price?
- This page carries two kinds of number. The index (2020 = 100) measures percentage change over time and is not a yen amount; the yen figure is an actual average retail price from the government's retail price survey. Source: 総務省統計局 消費者物価指数 (e-Stat table 0003427113, nationwide, monthly).