Top 17 Engine types in Japan
This curated ranking covers the 17 largest engine types in Japan, ordered by estimated audience size from Rascasse's anonymized search-behavior signals. Electric motor, Diesel engine and Diesel fuel lead the list with a combined estimated audience of 3,038,199 people. Across all 17 entries the average audience size is 263,775, and the largest, Electric motor, reaches around 1,246,149 people in Japan. Audience size is the estimated number of unique people in Japan who actively engage with each engine type, derived from search demand signals. Rankings reflect search-behavior signals collected across Japan and are refreshed weekly.
Ranking
| Rank | Name | Audience size | Country share | Subtype | Category |
|---|---|---|---|---|---|
| 1 |  Electric motor |
1,246,149 | 1.4% | Engine type | Cars & Mobility |
| 2 |  Diesel engine |
1,059,776 | 1.8% | Engine type | Cars & Mobility |
| 3 |  Diesel fuel |
732,274 | 1.6% | Engine type | Cars & Mobility |
| 4 |  Gasoline |
640,844 | 1.2% | Engine type | Cars & Mobility |
| 5 |  Inline-four engine |
261,523 | 2.3% | Engine type | Cars & Mobility |
| 6 |  Biofuel |
171,184 | 0.8% | Engine type | Cars & Mobility |
| 7 |  Aircraft engine |
115,339 | 0.9% | Engine type | Cars & Mobility |
| 8 |  Hydrogen fuel |
98,655 | 7.2% | Engine type | Cars & Mobility |
| 9 |  Air-cooled engine |
54,604 | 4.2% | Engine type | Cars & Mobility |
| 10 |  Flexible-fuel vehicle |
38,468 | 1.3% | Engine type | Cars & Mobility |
| 11 |  Gasoline direct injection |
26,069 | 1.2% | Engine type | Cars & Mobility |
| 12 |  Hemi engine |
25,329 | 4.3% | Engine type | Cars & Mobility |
| 13 |  Biodiesel |
10,769 | 0.6% | Engine type | Cars & Mobility |
| 14 |  Hydrogen vehicle |
1,282 | 0.4% | Engine type | Cars & Mobility |
| 15 |  Flat engine |
1,097 | 0.1% | Engine type | Cars & Mobility |
| 16 |  Natural gas vehicle |
547 | 0.1% | Engine type | Cars & Mobility |
| 17 |  Longitudinal engine |
276 | 1.4% | Engine type | Cars & Mobility |
Frequently asked questions
How is this Top 17 list compiled?
Rascasse aggregates anonymized search-behavior signals across Japan and ranks each engine type by its estimated audience size. Only entries with at least 5 measured entities are listed.
How often is the list updated?
The ranking is refreshed weekly from the latest search-behavior data and re-published as a static page.
What is the largest engine type in Japan?
Electric motor currently leads with an estimated audience of 1,246,149 people in Japan.
Methodology
Audience sizes are estimated from anonymized search-behavior signals across Japan. Lists below 5 entries are not published. See methodology for full details.