IndyCar's new IR28 car faces early fuel system hiccup

IndyCar's next-generation IR28 chassis recently underwent its initial validation tests, with the car hitting the track outside the Indianapolis Motor Speedway for the first time. Alex Palou, a five-time IndyCar champion, conducted a test session at Sebring International Raceway in Sebring, Florida.

The bumpy Sebring course was chosen to simulate rough track conditions. During Monday's test, Palou encountered a fuel system issue that prematurely ended his session after 43 laps. Engineers from various IndyCar teams were unable to resolve the problem on-site.

Palou noted that the IR28 demonstrated strong braking capabilities compared to the current DW12 chassis. He also praised the new car's wider cockpit and enhanced cooling systems, which he believes will be highly appreciated by drivers.

Alexander Rossi is set to continue testing the IR28 on Tuesday, focusing on diagnosing and rectifying the fuel system malfunction. The development of the IR28 and accompanying regulations for the new 2.4-liter twin-turbocharged V6 engine will continue through the fall, with Chevrolet and Honda to receive their own chassis later.