| Rating | Solver | Clue |
|---|---|---|
| MOTOR | Engine | |
| MACHINE | Engine | |
| GUNS | Revs (engine) | |
| THROTTLES | Engine accelerators | |
| STALLING | Killing (engine) | |
| STALLED | Killed (engine) | |
| TURBOCHARGER | Engine booster | |
| SUPERCHARGER | Engine booster | |
| COWLING | Engine covering | |
| TURBINE | Water-powered engine | |
| SUPERCHARGE | Boost (engine) | |
| TURBO | Engine booster | |
| REV | Gun (engine) | |
| GUN | Rev (engine) | |
| CARBURETTOR | Engine part | |
| TAPPET | Engine part | |
| APPLIANCE | Fire engine | |
| PISTON | Engine part | |
| LOCO | Railway engine | |
| PURR | Smooth engine sound | |
| SUMPS | Engine oil pans | |
| YAHOO | Internet search engine | |
| BING | Internet search engine | |
| Internet search engine | ||
| WHINE | Aircraft engine noise | |