Scott Dixon and Graham Rahal have been handed six-place grid penalties ahead of the Michigan IndyCar race due to unapproved engine changes. These penalties, confirmed ahead of the Detroit Grand Prix weekend, are expected to impact their starting positions and race strategies.
Both drivers entered the race following challenging performances at the Indy 500 and have now been penalized for violations of technical regulations related to engine usage. According to the official IndyCar regulations, these infractions trigger the imposed grid drops, which will be served at the Detroit event.
Rules Behind the Engine Change Penalties
Scott Dixon’s penalty stems from his violation of Article 16.1.2.3.2 of the IndyCar rule book. This rule states that a fifth engine used by a full-season entrant only earns manufacturer points if the first four engines have completed the required mileage. Otherwise, the fifth or any additional engines are classified as unapproved change-outs and lead to penalties.
“A fifth (5th) Engine is eligible to earn Engine Manufacturer points if a Full Season Entrant has completed the Full Season Entrant Engine Mileage with its first four (4) Engines. Otherwise, a fifth (5th) or more Engine does not earn Engine Manufacturer points and will be considered an Unapproved Engine change-out,” the rule book states.
Graham Rahal’s penalty resulted from a violation of Rule 16.1.5.4, which stipulates that once an engine intended for the Indianapolis 500 is fitted, it cannot be removed before the race unless it is for repair purposes.
“Once an Indianapolis 500 Mile Race Engine is fitted to the Car, removal of the Engine prior to the Indianapolis 500 Race is an Unapproved Engine Change-Out, unless it is replaced for Repair,” the rule details.
Impact on Race Preparation at the Detroit Grand Prix
The six-place grid penalties require both Dixon and Rahal to focus intensely on optimizing their qualifying performances. The Detroit Grand Prix takes place on a street circuit where overtaking opportunities are scarce, making starting positions crucial for race success. This situation elevates the significance of qualifying for both drivers.

Scott Dixon has a strong history at the Michigan road course, with four career wins there, while Graham Rahal boasts two victories from the 2017 Michigan races. Both will aim to overcome the grid setbacks with strategic driving and solid race execution.
Scott Dixon’s Response to His Recent Indy 500 Setback
Following a disrupted Indianapolis 500 race caused by a brake failure early in the event, Scott Dixon expressed his disappointment but also looked ahead to the Detroit race. The Chip Ganassi Racing veteran faced an extended pit stop after a brake issue ignited during the opening laps, which compromised his race strategy.
“Another 500 in the books, firstly a big congratulations to my teammate @alexpalou and @chipganassiracing on the win. Unfortunately brake failure on my car on the opening laps, we went 3 laps down after stopping. Managed to get back out there and kept running to collect points. Tough day. Looking forward to @detroitgp,” he wrote on Instagram following the Indy 500.
Dixon eventually finished 23rd, but post-race penalties to competitors Marcus Ericsson, Kyle Kirkwood, and Callum Ilott elevated his official result to 20th place. Despite this, his focus now shifts to the Detroit Grand Prix, where he must manage the additional challenge of the six-place grid penalty.
Outlook for Rahal and Dixon Moving Forward
The penalties serve as a significant hurdle but also underscore the technical challenges involved in a full IndyCar season. For Graham Rahal and Scott Dixon, both seasoned drivers, this situation will test their ability to adapt and maximize opportunities despite starting setbacks. Their performances at Michigan will influence their standings and momentum in the season ahead.
With the Detroit Grand Prix offering a demanding circuit and strong competition, the grid penalties highlight the importance of strategic preparation and execution. How Rahal and Dixon respond on the track may shape their prospects not only in this race but through the remainder of the IndyCar season.
