Transport & communication · code 7390
Car insurance (voluntary)
自動車保険料（任意）
Key facts
As of August 2026, car insurance (voluntary) prices in Japan are up 5.9% year on year and up 11.0% over five years. The official consumer price index stands at 109.7 (2020 = 100), up 67.5% versus January 1985, when the series begins.
Car insurance (voluntary) sits in the transport & communication group of Japan's CPI basket, with 500 monthly observations from January 1985 to August 2026. The series peaked at 109.7 in July 2026 and bottomed at 65.5 in January 1985; the latest reading is 0.0% against that peak. Against ten years ago it is +14.4%.
Latest CPI
109.7
2026-08 (2020=100)
YoY %
+5.9%
5y change %
+11.0%
Change since 1985-01
+67.5%
Annual average index by year
| Year | Index | YoY % | Months |
|---|---|---|---|
| 2015 | 96.1 | +3.0% | 12 |
| 2016 | 95.9 | -0.2% | 12 |
| 2017 | 96.4 | +0.5% | 12 |
| 2018 | 95.8 | -0.6% | 12 |
| 2019 | 98.1 | +2.4% | 12 |
| 2020 | 100.0 | +1.9% | 12 |
| 2021 | 98.8 | -1.2% | 12 |
| 2022 | 96.2 | -2.6% | 12 |
| 2023 | 95.6 | -0.6% | 12 |
| 2024 | 99.6 | +4.2% | 12 |
| 2025 | 104.3 | +4.7% | 12 |
| 2026 | 109.3 | +4.8% | 8 |
Average of the monthly index values in each year (2020 = 100). Blank months are excluded.
Frequently asked questions
- How much have car insurance (voluntary) prices changed in Japan over the past year?
- As of August 2026, +5.9% year on year, measured by Japan's official consumer price index (2020 = 100).
- How much have car insurance (voluntary) prices changed in Japan over the past five years?
- +11.0% compared with the same month five years earlier. The index now reads 109.7.
- When were car insurance (voluntary) prices in Japan at their highest?
- The series peaked at 109.7 in July 2026. The latest reading is 0.0% 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).