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| 4/14/2023 | Brownstown Bullring - Brownstown, IL TNT Fence Night at the Races DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, B Modifieds, DIRTcar 4 Cylinders | Results | | Andrew Koester (DIRTcar 4 Cylinders) | 5th | - | - | 12th |
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| 4/28/2023 | Brownstown Bullring - Brownstown, IL $5,000-To-Win MARS Super Late Models; $2,000-To-Win MARS Modifieds DIRTcar Late Models: MARS - Midwest Auto Racing Series Dirt Super Late Models, DIRTcar UMP Modifieds, Factory Stocks, B Modifieds, DIRTcar 4 Cylinders | Results | | Andrew Koester (DIRTcar 4 Cylinders) | - | - | - | 12th |
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| 5/5/2023 | Brownstown Bullring - Brownstown, IL Regular Show DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, B Modifieds, DIRTcar 4 Cylinders | Results | | Andrew Koester (DIRTcar 4 Cylinders) | 4th | - | - | 14th |
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| 5/12/2023 | Brownstown Bullring - Brownstown, IL Renegade Race Fuels Night at the Races DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, B Modifieds, DIRTcar 4 Cylinders | Results | | Andrew Koester (DIRTcar 4 Cylinders) | 5th | - | - | 13th |
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| 5/28/2023 | Brownstown Bullring - Brownstown, IL Willy's Carburetor Night at the Races DIRTcar UMP Modifieds, Factory Stocks, Limited Modified, DIRTcar 4 Cylinders, HART Non-Wing Micros | Results | | Andrew Koester (DIRTcar 4 Cylinders) | 5th | - | - | 11th |
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| 5/29/2023 | Brownstown Bullring - Brownstown, IL Mullins Race Engines Night at the Races DIRTcar UMP Modifieds, Factory Stocks, Limited Modified, DIRTcar 4 Cylinders, HART Non-Wing Micros | Results | | Andrew Koester (DIRTcar 4 Cylinders) | 6th | - | - | 16th |
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| 6/9/2023 | Brownstown Bullring - Brownstown, IL Tucker's Automotive & Tire Night at the Races DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, B Modifieds, DIRTcar 4 Cylinders | Results | | Andrew Koester (DIRTcar 4 Cylinders) | 6th | - | - | 17th |
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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 | | Andrew Koester (Hornets) | 7th | - | - | DNS |
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| 6/23/2023 | Brownstown Bullring - Brownstown, IL DIRTcar Summer Nationals DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals B Modifieds, Dirt Late Models, Snow - SOO 600, DIRTcar 4 Cylinders | Results | | Andrew Koester (DIRTcar 4 Cylinders) | - | - | - | 14th |
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| 7/8/2023 | Macon Speedway - Macon, IL 410 Sprints - Non-Winged: USAC National Sprint Cars Vintage Full Body Stock Cars, Hornets | Results | | Andrew Koester (Hornets) | 7th | - | - | 16th |
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| 7/21/2023 | Brownstown Bullring - Brownstown, IL Impressive Race Chassis & TCM Machine Night $7 General Admission Tickets DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, B Modifieds, DIRTcar 4 Cylinders | Results | | Andrew Koester (DIRTcar 4 Cylinders) | 8th | - | - | DNS |
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