IROC XVIII was the eighteenth year of IROC competition, which took place in 1994. It was the first year the Dodge Avenger was used in competition, replacing the Dodge Daytona, and continued the format introduced in IROC XVIII. Race one took place on the Daytona International Speedway, race two took place at Darlington Raceway, race three ran at Talladega Superspeedway, and the year finished at Michigan International Speedway. Mark Martin won the series championship, and $200,000. The roster of drivers and final points standings were as follows:

Race results

Race One, Daytona International Speedway

Friday, February 18, 1994 one *: Bonus points for leading the most laps. two **: Bonus points for leading the 2nd most laps. three ***: Bonus points for leading the 3rd most laps. Average speed: 180.632 mph Cautions: 1 (lap 23, Scott Sharp Crash) Margin of victory: .5 cl Lead changes: 13

Race Two, Darlington Raceway

Saturday, March 26, 1994 one *: Bonus points for leading the most laps. two **: Bonus points for leading the 2nd most laps. three ***: Bonus points for leading the 3rd most laps (did not occur in this race so not awarded). Average speed: 144.083 mph Cautions: 3 Margin of victory: .25 sec Lead changes: 2 Notes: This race was originally scheduled for 60 laps with a break in-between but was shortened to 46 laps due to an extra long break. During the first half of the race the teams were having overheating problems due to rubber build up on the grills on the cars. It got so bad that Dave Marcis and other IROC officials were using wire brushes to clean the grills on the cars. They also had to check the water in the radiator of the cars due to the overheating problems. Due to the long break IROC shortened the race to 46 laps. The track had second round qualifying for the NASCAR Winston Cup Series and the NASCAR Busch Grand National race later in the day to get in, forcing IROC to shorten the race.

Race Three, Talladega Superspeedway

Saturday, April 30, 1994 one *: Bonus points for leading the most laps. two **: Bonus points for leading the 2nd most laps. three ***: Bonus points for leading the 3rd most laps. Average speed: 186.323 mph Cautions: 1 Margin of victory: .37 sec Lead changes: 6

Race Four, Michigan International Speedway

Saturday, July 30, 1994 one *: Bonus points for leading the most laps. two **: Bonus points for leading the 2nd most laps. three ***: Bonus points for leading the 3rd most laps. Average speed: 150.387 mph Cautions: 3 Margin of victory: .35 sec Lead changes: 7 Cautions Lap Leader Breakdown