NASCAR Announces 2026 Cup Series Rule Changes

NASCAR announced a series of significant rule changes for the 2026 Cup Series season on Friday, focusing on increased engine horsepower, aerodynamic adjustments, safety enhancements, and testing protocols for potential new manufacturers. The updates, developed through discussions with teams, drivers, and officials, aim to improve on-track passing and competition at shorter tracks while accommodating industry growth.

Starting in 2026, NASCAR will implement a 750-horsepower tapered spacer engine package at all ovals under 1.5 miles and road courses, marking the first such increase in the Next Gen era beyond the current 670-horsepower setup used on short tracks. This package pairs with the short-track and road-course rules introduced in 2024, featuring a three-inch rear spoiler and reduced diffuser strakes to enhance grip and facilitate overtaking. Officials believe the combination will address issues like dirty air that have hindered racing quality at these venues.

Five tracks will adopt the new configuration next season: Bristol Motor Speedway, Darlington Raceway, Dover Motor Speedway, Nashville Superspeedway, and World Wide Technology Raceway at Gateway. Bristol, Gateway, and...