| 100% | SMOG | 4 | Pollution from car emissions, in part |
| 46% | SMOG | 4 | Pollution that car emissions contribute to |
| 43% | GASCAP | 6 | Car part missing from Teslas |
| 41% | BUMPER | 6 | Car part that protects from minor damage |
| 41% | HOOD | 4 | Car part called a "bonnet" in Britain |
| 41% | HOOD | 4 | Car part called a bonnet in England |
| 41% | MUFFLER | 7 | Car part called a silencer in Britain |
| 41% | HOOD | 4 | Car part called a "bonnet" in England |
| 41% | TIRE | 4 | Car part replaced in a pit stop |
| 41% | TYRE | 4 | Rolling car part, in Leeds |
| 41% | ACDELCO | 7 | Big name in car parts |
| 41% | AUTOZONE | 8 | Big name in car parts |
| 40% | HORN | 4 | Car part that might be pressed in an emergency |
| 40% | TIRE | 4 | Car part that gets changed in a pit stop |
| 39% | BONNET | 6 | Car part that's called the hood in the US |
| 39% | TYRE | 4 | Spare car part, in a Brit's boot |
| 39% | RADIATOR | 8 | Coolant in this part keeps engine from overheating |
| 39% | SPEAKER | 7 | Music emits from this in cars, stereo systems |
| 39% | HITCHHIKE | 9 | Solicit free rides from strangers in passing cars |
| 38% | WHATHO | 6 | Bertie Wooster expression thought to be derived in part from Beowulf’s “hwæt” |
| 37% | DACAPO | 6 | Musical instruction that a piece be repeated, in part or whole, from the beginning |
| 37% | BALLJOINT | 9 | Car part that works in a similar manner to the human hip |
| 37% | SASH | 4 | Part of a window thrown up in "A Visit From St. Nicholas" |
| 37% | TYRE | 4 | Car part that needs air to work (how it's spelled in Britain) |
| 36% | SHH | 3 | Sound from an irritated rider in an Amtrak quiet car, maybe |
| 36% | SASH | 4 | Window part that gets thrown up in "A Visit from St. Nicholas" |
| 36% | ADINERCOSTUME | 13 | "Someday I'll graduate from 'Girl in ___' to an actual speaking part" |
| 35% | MELANIA | 7 | “___ and Me,” book sourced in part from surreptitious recordings of conversations with the First Lady (September, 2020) |
| 35% | ASUNDER | 7 | In parts |
| 34% | CLUTCH | 6 | Device in a car that transmits the drive from the engine to the gearbox |