| 100% | HOTWIRES | 8 | Starts by bypassing the ignition system |
| 44% | DEMOCRACY | 9 | Ruled by all; system started by the Greeks |
| 41% | OBIE | 4 | Award started by the Village Voice |
| 39% | HEELFLIPS | 9 | Skateboard tricks started by kicking with the back foot |
| 39% | TSARISM | 7 | System toppled by the 1917 February Revolution |
| 38% | INDUCTION | 9 | The artificial starting of labor by a doctor |
| 38% | BASESIXTY | 9 | Number system used by the Babylonians |
| 38% | BRAILLE | 7 | Reading system used by the blind |
| 38% | KEY | 3 | What you turn in the ignition switch to start a car |
| 37% | FEUDALISM | 9 | Social system abolished by the French Assembly |
| 37% | OLDAGE | 6 | It starts in the 60s, by most reckonings |
| 37% | IGNITION | 8 | Electrical system, sparks fuel to start the engine |
| 36% | STEAKDINNER | 11 | Meal suggested by the starts of four long answers |
| 36% | CURE | 4 | Goth rock band fronted by Robert Smith, starts The |
| 35% | IFNOMINATED | 11 | Start of a quote by Rep. Mo Udall, 1990, regarding the Presidency |
| 35% | LOVESTORY | 9 | Novel by Erich Segal starts with the death of Jenny |
| 35% | BIRDIE | 6 | Term illustrated by the starts of 17- and 20-Across |
| 35% | BOGEY | 5 | Term illustrated by the starts of 39- and 44-Across |
| 35% | TORTILLA | 8 | (1/8) "Let's make a burrito! Start by laying out the ___ (thin, circular flatbread)" |
| 35% | MEUP | 4 | "Start __ __" by the Rolling Stones |
| 35% | MENSA | 5 | Group described by the starts of the answers to starred clues |
| 35% | YODELING | 8 | Style of singing imitated by the starts of the starred answers |
| 35% | THEOLYMPICGAMES | 15 | Event suggested by the starts of 17-, 35- and 40-Across |
| 35% | JUDE | 4 | "Hey ___," iconic song by The Beatles that starts with a greeting |
| 35% | JOLENE | 6 | 1973 hit song by Dolly Parton that starts with the chorus |
| 35% | FRUTTI | 6 | "Tutti ___," 1955 song by Little Richard that starts with the chorus |
| 35% | NIA | 3 | Name that becomes another name by adding So to the start |
| 34% | ASIDE | 5 | Comment starting "By the way ..." |
| 34% | THECHIPMUNKS | 12 | Singing group suggested by the starts of 20-, 28- and 48-Across |
| 34% | USPS | 4 | Org. suggested by the starts of 17-, 31-, 41- and 62-Across |