Historical Indy 500 Results Shed Light On Race Day Advantages

To understand what gives drivers an edge at the Indianapolis 500, this analysis examines results from the eight races held between 2018 and 2025, covering 264 starters and finishers. The starting point is intentional. In 2018, IndyCar introduced its universal aero kit, often referred to as UAK18, replacing the manufacturer-specific aerodynamic packages used in the preceding era. Chevrolet and Honda continued to compete as engine suppliers, but teams were now racing with broadly common bodywork rather than separate manufacturer-designed aero kits.

That matters because it creates a cleaner modern comparison. Expanding the analysis into earlier seasons would introduce a different technical environment, one in which engine manufacturer and aerodynamic design were more closely intertwined. By beginning with 2018, the data isolates a period in which the Chevrolet-Honda rivalry remained important, while the fundamental aerodynamic platform was more consistent across the field.

Indy 500 Engine Rivalry Draws Headlines But Offers Little Predictive Power

The Honda-Chevrolet rivalry is one of the most visible technical contests at Indianapolis. Over the eight Indianapolis 500s held from 2018 through 2025, however, the results are far more balanced than the debate can sometimes suggest.

Chevrolet and Honda split the victories evenly, with four wins apiece. Chevrolet accounted for 129 starters, or 49%, compared with 135 for Honda (51%). Chevrolet-powered cars posted a slightly better average finish, 16.5 to Honda’s 17.5, while Honda held narrow advantages in top-10 finishes, 42 to 38, and listed race winnings, $57.6 million to $56.0 million. Chevrolet, meanwhile, led more laps, 873 to 727.

Across the full eight-race sample, the data does not support a simple conclusion that Indianapolis belongs to one manufacturer. A permutation test comparing average finishing position for Chevrolet and Honda returned a p-value of approximately 0.358. A similar test of top-10 finishing rates produced a p-value of approximately 0.785. In practical terms, neither difference is statistically strong enough, in this sample, to conclude that engine manufacturer alone meaningfully explains who succeeds on race day.

The 2026 starting grid makes that question especially relevant. Alex Palou will start from the pole in a Honda, while Chevrolet-powered Alexander Rossi and David Malukas complete the front.

Front Row Starting Position Carries A Measurable Premium At Indy 500

The starting position is more than a ceremonial reward for qualifying speed. It is a competitive advantage with measurable financial value. Across the eight races held from 2018 through 2025, drivers starting on the front row posted an average finish of 10.8. Drivers starting fourth through 10th averaged a 13.6 finish, while those starting from 11th through 20th averaged 17.3. For drivers in the final third of the grid, positions 21 through 33, the average finish fell to 20.0.

The financial premium is striking, although it requires an important caveat. Front-row starters represented just 9.1% of the field in the sample but collected 18.5% of the listed winnings. Indy 500 payout totals are not based exclusively on finishing position; they can include designated and special awards, including a pole-position bonus. In recent years, the NTT P1 Award alone has paid $100,000 to the pole winner. Even with that qualification, the front row’s financial edge is difficult to dismiss.

Cars starting in the first three positions not only have access to qualifying-related awards, but also posted better average finishes, won four of the eight races in the sample and reached the top 10 at a 62.5% rate. The data therefore shows that front-row speed is rewarded twice: first during qualifications, and again through substantially stronger race results.

The relationship also holds in a basic statistical model. Starting position and finishing position had a positive correlation of approximately 0.343, meaning drivers who began farther back tended to finish farther back. A simple regression estimates that each position lost on the starting grid is associated with roughly one-third of a position lost at the finish. Put another way, starting 10 places deeper in the field is associated with a finish approximately 3.4 positions worse. That is a meaningful disadvantage in a race where prize money, sponsor visibility, television exposure and career-defining moments are concentrated near the front.

Indianapolis, of course, still makes room for improbable charges through the field. Alexander Rossi finished fourth after starting 32nd in 2018. Simon Pagenaud reached the podium from 26th in 2021. Scott Dixon finished third from 21st in 2024. But those performances stand out precisely because they are uncommon. Starting deep can create a memorable comeback story. It does not usually create a statistical favorite.

The significance testing reinforces that conclusion. In the 2018-2025 sample, permutation tests found that front-row starters finished significantly better and reached the top 10 at significantly higher rates than the rest of the field, with p-values below 0.001 in both comparisons. An ANOVA-style permutation test across all four starting groups also produced a p-value below 0.001. The front of the Indy 500 grid is not merely faster on qualifying weekend. It is a materially different place from which to begin the race.

At The Indy 500, The Best Starting Point Still Matters Most

The results of the UAK18 era reveal a meaningful pattern. From 2018 through 2025, Chevrolet and Honda produced a nearly even record at Indianapolis, splitting the victories and showing no statistically meaningful difference in average finish or top-10 rate. The engine battle remains central to the spectacle, but engine supplier alone has offered limited predictive value.

Starting position has told a different story. Front-row starters finished better, reached the top 10 more often, won half of the races in the sample and captured a disproportionate share of listed winnings. Although some of that financial advantage includes qualifying-related awards, the competitive advantage remained clear in the race results themselves.

That does not mean the 2026 Indianapolis 500 will be decided before the command to start engines. Indy has produced too many improbable comebacks and too many late-race twists for that. But as Alex Palou, Alexander Rossi and David Malukas lead the field toward the green flag, the recent data suggests they will begin with something more valuable than a clear view into Turn 1. They will begin from the position most consistently associated with success, and at the Indy 500, the most valuable real estate is still the front row.