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| 5/6/2023 | Charleston Speedway - Charleston, IL Weekly Championship Auto Racing DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 7th | - | - | 11th |
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| 5/13/2023 | Charleston Speedway - Charleston, IL Mother's Day Special + Weekly Championship Racing DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, 600cc Modifieds, DIRTcar Pro Modifieds | Rain Out |
| 5/27/2023 | Charleston Speedway - Charleston, IL Weekly Championship Racing DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 8th | - | - | 9th |
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| 6/3/2023 | Charleston Speedway - Charleston, IL Weekly Championship Racing DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 6th | - | - | 11th |
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| 6/17/2023 | Charleston Speedway - Charleston, IL Father's Day Special + Weekly Championship Racing DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, 600cc Modifieds, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 5th | - | - | 11th |
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| 6/24/2023 | Red Hill Raceway - Sumner, IL Summer Fun Pro Late Models DIRTcar UMP Modifieds, DIRTcar Factory Stock, Stock Cars, B Modifieds, DIRTcar Pro Late Models | Results | | John Leffler (DIRTcar Factory Stock) | 4th | - | - | 4th |
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| 7/15/2023 | Charleston Speedway - Charleston, IL The 38 Special for DIRTcar Modified presented by Leaf Tree Service. DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 7th | - | - | 14th (DNF) |
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| 8/5/2023 | Charleston Speedway - Charleston, IL Fan Appreciation Night + Driver Autographs + Weekly Championship Racing DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, 600cc Modifieds, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 5th | - | - | 7th |
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| 8/12/2023 | Charleston Speedway - Charleston, IL Weekly Championship Racing DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 4th | - | - | 10th |
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| 8/19/2023 | Charleston Speedway - Charleston, IL Driver Appreciation Night + Weekly Championship Racing DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, 600cc Modifieds, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 6th | - | - | 11th (DNF) |
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| 8/26/2023 | Charleston Speedway - Charleston, IL Weekly Championship Racing DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 6th | - | - | 11th |
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| 9/1/2023 | Red Hill Raceway - Sumner, IL Red Hill Raceway - Night #1 DIRTcar UMP Modifieds, DIRTcar Factory Stock, Stock Cars, B Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | 6th | - | - | 6th |
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| 9/2/2023 | Charleston Speedway - Charleston, IL 4th Annual Freaky 40 for Pro Modified presented by McHugh's Double Drive Thru + Add'l Classes DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | DNS | - | - | DNS |
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| 9/16/2023 | Charleston Speedway - Charleston, IL Double Down Sizzler for Double Championship Points DIRTcar UMP Modifieds, DIRTcar Factory Stock, Street Stocks, Dirt Late Models, Hornets, DIRTcar Pro Modifieds | Results | | John Leffler (DIRTcar Factory Stock) | DNS | - | - | 11th |
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