International Engine of the Year Annual winners Annual winners

| category | _1999 | _2000 | _2001 | _2004 |
|---|---|---|---|---|
| International Engine of the Year | Toyota 1SZ-FE 1.0L Yaris | Honda 1.0L IMA Insight | BMW S54 3.2L M3 | Toyota 1NZ-FXE 1.5L Hybrid Synergy Drive Prius |
| Best New Engine | not awarded | not awarded | BMW S54 3.2L M3 | Toyota 1NZ-FXE 1.5L Hybrid Synergy Drive Prius |
| Best Fuel Economy / Green Engine | Volkswagen 1.2L TDI 3L | Honda 1.0L IMA Insight | Honda 1.0L IMA Insight | Toyota 1NZ-FXE 1.5L Hybrid Synergy Drive Prius |
| Best Performance Engine | not awarded | not awarded | not awarded | Mercedes-AMG M275 6.0L V12 S65 / CL65 / SL65 |