Harlan Fengler
Birthplace: Chicago, Illinois
Born: March 1, 1903
Died: April 1, 1981
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| Year | Series | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles | Points | Standing |
| 1923 | AAA | 6 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 750 |
6 |
|
| 1924 | AAA | 5 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 563 | 8 | |
| 1925 | AAA | Non | points | race | only | 0 | NR | |||||
| 1926 | AAA | 7 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 45 | 23 | |
| 1927 | AAA | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 50 | 16 | |
| Total | 19 | 3 | 2 | 0 | 1 | 3 | 2 | 1 | 1408 |
| Track Type | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Board Oval | 18 | 1 | 2 | 0 | 1 | 3 | 2 | 1 | |
| Brick Oval | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 16 | 0 |
| Series | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| AAA | 19 | 3 | 2 | 0 | 1 | 3 | 2 | 1 |
| Start # | Date | Track | Type | Series | Car # | Sponsor/Name | Chassis | Engine | Start | Finish | Laps | Status |
Points |
| 1 | 5/30/1923 | Indianapolis | BR | AAA | 26 | Durant/Miller | Miller | Miller | 19 | 16 | 69 | Broken fuel tank | |
| 2 | 7/4/1923 | Kansas City 1 | BO | AAA | 26 | Durant/Miller | Miller | Miller | X | 3 | 200 | 2:44:54.88 90.957 | 140 |
| 3 | 9/4/1923 | Altoona | BO | AAA | 12 | Wade/Miller | Miller | Miller | 3 | 14 | 49 | Broken piston | |
| 4 | 9/29/1923 | Fresno 2 | BO | AAA | 12 | Wade/Miller | Miller | Miller | 1 | 5 | 150 | Finished | 30 |
| 5 | 10/21/1923 | Kansas City 2 | BO | AAA | 12 | Wade/Miller | Miller | Miller | X | 1 | 200 | 2:12:27 113.25 | 500 |
| 6 | 11/29/1923 | Beverly Hills 2 | BO | AAA | 12 | Wade/Miller | Miller | Miller | X | 4 | 200 | 2:18:46.0 108.095 | 80 |
| 7 | 2/24/1924 | Beverly Hills | BO | AAA | 6 | Wade | Miller | Miller | 5 | 1 | 200 | 2:09:14.6 116.06 | 500 |
| -- | 5/30/1924 | Indianapolis | BR | AAA | 6 | Wade | Miller | Miller | -- | -- | -- | Wrecked practice | |
| 8 | 7/4/1924 | Kansas City | BO | AAA | 16 | Durant | Miller | Miller | X | 4 | 120 | Finished | 48 |
| 9 | 9/1/1924 | Altoona 2 | BO | AAA | 6 | Durant | Miller | Miller | 8 | 7 | 190 | Flagged | 15 |
| 10 | 10/3/1924 | Fresno | BO | AAA | 6 | Durant | Miller | Miller | 4 | 10 | 99 | Broken valve | |
| 11 | 10/25/1924 | Charlotte | BO | AAA | 6 | Miller | Miller | Miller SC | 12 | 12 | 111 | Burned bearings | |
| -- | 12/14/1924 | Culver City | BO | AAA | 6 | Wade | Miller | Miller | -- | -- | -- | Withdrew | |
| NCRD | 10/3/1925 | Fresno | BO | AAA | X | X | X | X | -- | -- | X | Relieved Wonderlich | |
| -- | 5/30/1926 | Indianapolis | BR | AAA | 10 | Locomobile Junior 8 | Fengler | Locomobile SC | -- | -- | -- | Did not appear | |
| 12 | 6/12/1926 | Altoona 1 | BO | AAA | 12 | Locomobile Junior 8 | Fengler | Locomobile SC | 8 | 14 | 60 | Overheated | |
| 13 | 7/5/1926 | Rockingham 2 | BO | AAA | 12 | Locomobile Junior 8 | Fengler | Locomobile SC | 10 | 12 | 77 | Broken supercharger | |
| 14 | 7/17/1926 | Atlantic City 3 | BO | AAA | 12 | Locomobile Junior 8 | Fengler | Locomobile SC | X | 8 | 4 | Spark plugs | |
| 15 | 7/17/1926 | Atlantic City 4 | BO | AAA | 12 | Locomobile Junior 8 | Fengler | Locomobile SC | X | 4 | 40 | 0:30:49.94 116.761 | 25 |
| 16 | 7/17/1926 | Atlantic City 5 | BO | AAA | 12 | Locomobile Junior 8 | Fengler | Locomobile SC | X | 6 | 80 | Finished | 20 |
| 17 | 8/23/1926 | Charlotte 2 | BO | AAA | 12 | Locomobile Junior 8 | Fengler | Locomobile SC | 5 | 8 | 4 | Broken valve | |
| 18 | 9/18/1926 | Altoona 2 | BO | AAA | 19 | Locomobile Junior 8 | Fengler | Locomobile SC | 10 | 12 | 114 | Engine trouble | |
| 19 | 3/6/1927 | Culver City | BO | AAA | 25 | Locomobile Junior 8 | Fengler | Locomobile SC | X | 5 | 200 | Finished | 50 |