IndyCar — formally the NTT IndyCar Series — is the premier level of American open-wheel single-seater racing. Every car in the series runs the same Dallara DW12 chassis, powered by either a Honda or Chevrolet 2.2-litre twin-turbocharged V6 hybrid engine producing approximately 700 horsepower. Because the hardware is identical across the field, the racing is extraordinarily close: the difference between qualifying first and qualifying twentieth is routinely less than one second.

This is what separates IndyCar most fundamentally from Formula 1. In F1, teams design, build and develop their own cars — the technology gap between a front-runner and a backmarker can be several seconds per lap. In IndyCar, everyone buys the same Dallara chassis from the same manufacturer. The performance differentiators are engineering depth in suspension setup, fuel mapping, strategic decision-making and — most importantly — driver skill.

How IndyCar Differs from NASCAR

Both are major American racing series, but the philosophical difference is significant. IndyCar cars are open-wheel single-seaters — sophisticated aerodynamic machines with exposed tyres. NASCAR runs enclosed stock cars based loosely on production car bodies. IndyCar races on oval tracks, road courses and city street circuits. NASCAR runs primarily on oval tracks with a handful of road course additions. IndyCar is closer in technical philosophy to Formula 1. NASCAR is closer to touring car racing.

The driving techniques required are also different. IndyCar on a superspeedway oval demands understanding of slipstream drafting and aerodynamic balance at constant left-turn loads. NASCAR oval racing involves more physical contact and pack tactics. On road courses, IndyCar drivers apply skills nearly identical to F1: late-apex cornering, downforce management, tyre conservation and precise braking zones.

The 2026 NTT IndyCar Series season runs 17 races across 16 venues — the Milwaukee Mile hosts a back-to-back doubleheader on the final Saturday and Sunday of August. Every race airs live on broadcast FOX in the United States, marking the first season of IndyCar’s exclusive partnership with the network. The season opened with three races on three consecutive weekends in March, a deliberate push for early-season momentum before the May month at Indianapolis.

Round 10 next: Road America, June 21 · Green highlighted row. All races live on FOX. Times ET.

No other major racing series asks its drivers to compete on three fundamentally different track types in a single season. A driver who dominates on road courses can be entirely uncompetitive on an oval — not because of talent, but because the car setup, driving style, physical demands and risk calculation are almost unrelated disciplines wearing the same uniform. This is the defining characteristic of IndyCar: genuine, all-round versatility is required to win a championship.

Every car in the 2026 NTT IndyCar Series is built around the Dallara DW12 chassis — the spec monocoque that has underpinned the series since 2012, with the current Universal Aero Kit introduced in 2018. Teams configure the aerodynamics, suspension and dampers specifically for each track type, but the fundamental tub, safety cell and crash structure are identical across every car on the grid.

Engine — Honda vs Chevrolet

Two manufacturers supply engines for the 2026 season: Honda and Chevrolet. Both run a 2.2-litre twin-turbocharged V6, producing approximately 700 horsepower in race trim and pushing toward 800 horsepower in qualifying spec. In 2026, a hybrid energy recovery system is integrated into both power units — capturing kinetic energy under braking and deploying it for acceleration bursts, adding a layer of strategic complexity that didn’t exist in previous seasons.

The engine choice matters in ways that extend beyond raw power. Honda and Chevrolet each have different power delivery characteristics, different fuel efficiency curves and different reliability profiles at specific circuit types. Chip Ganassi Racing and Andretti Global run Honda. Team Penske and Arrow McLaren run Chevrolet. The manufacturer battle runs parallel to the drivers’ championship throughout the season.

Aerodynamic Kits — The Road Course vs Oval Transformation

One of the most visually dramatic differences in IndyCar is how drastically the car’s aerodynamic configuration changes between track types. On a street circuit or road course, the Dallara DW12 runs with tall front wings, large rear wings and extensive bodywork designed to generate maximum downforce. The car pushes hard into the road through corners, gripping aggressively and allowing drivers to carry speed through complex sequences of turns.

On a superspeedway oval, the wings are almost entirely removed. The rear wing becomes nearly horizontal — close to flat — to eliminate aerodynamic drag. The front wing is also reduced dramatically. The car trades corner grip for top-speed efficiency, reaching 238–240 mph in a straight line. The trade-off is that the car becomes extremely sensitive to aerodynamic disturbance — following another car closely on an oval can cause the second car to lose control through reduced downforce in the lead car’s turbulent wake. This is why oval racing strategy is as much about air management as it is about horsepower.

Pit Stops — Fuel Strategy and Tyre Changes

Unlike Formula 1, IndyCar cars require mid-race refuelling. Teams carry approximately 20 gallons of ethanol-blend fuel per stint, and fuel management is a fundamental part of race strategy at every venue. A typical oval race involves two or three pit stops for fuel and tyres, while a road course race may see three or four stops depending on tyre degradation rates.

On road and street circuits, Firestone supplies two tyre compounds: the Primary (black sidewall, harder compound, lasts longer but produces less grip) and the Alternate (red sidewall, softer compound, dramatically faster but degrades quickly). Teams must use both compounds during a race, which opens strategic windows similar to the prime and option tyre system in F1. IndyCar pit stops including fuel take approximately 6–8 seconds — longer than F1’s 2–3 second tyre-only stops, but far more complex. Full pit stop mechanics guide here.

IndyCar’s points system is designed to keep championship battles alive for as long as possible. Unlike some racing series where a dominant performer can mathematically clinch the title with multiple rounds remaining, IndyCar’s point structure rewards consistency across all circuit types while giving bonus incentives for exceptional single-race performance.

How Qualifying Works

IndyCar qualifying varies by circuit type. On road and street circuits, all cars go out in a single session, and the fastest 12 are promoted to a Firestone Fast Six — essentially a shoot-out for pole position where each driver gets one flying lap attempt. The drama of that single-lap pressure is one of the great spectacles in the sport.

On ovals, qualifying is individual time attacks — one car at a time, banked into the oval with a spotter on the roof and a timed two-lap average. At the Indianapolis 500, qualifying is an entire weekend event in itself, with a four-lap average run determining the 33-car grid. The fastest qualifier wins the NTT P1 Award — the Indy 500 pole attracts immense prestige because the track records set there are essentially the fastest laps in the history of American motorsport. Álex Palou won the 2026 Indy 500 pole at 232.248 mph average over four laps. Full qualifying format guide here.

Championship Points Structure

Safety Rules — SAFER Barriers, Aeroscreen and Oval Protocols

IndyCar has been at the forefront of motorsport safety innovation for decades. The SAFER (Steel And Foam Energy Reduction) barrier system lines every oval in the series, designed to decelerate impact forces over a longer distance. Every car runs the Aeroscreen — IndyCar’s version of a protective cockpit windscreen, introduced after the fatalities that prompted F1 to develop the Halo. On oval tracks, specific caution flag protocols govern how cars bunch up behind the pace car and how pit lane access is managed during yellow conditions. One badly timed caution can redistribute an entire field’s fuel strategy, reordering the championship standings in minutes.

Because every team runs the same Dallara chassis, what separates the front-runners from the midfield comes down to operational excellence: engineering depth, pit crew speed, strategic computing power and institutional knowledge accumulated over hundreds of race weekends. The top four teams have won the last eight championships between them, and 2026 looks set to continue that pattern.

Chip Ganassi Racing is the dynasty team of modern IndyCar. Fourteen championships across the team’s history. Their Honda partnership has produced four Álex Palou titles. Scott Dixon, in the twilight of a legendary career with 58 wins and six championships, remains a race winner when conditions suit his strategic style. Kyffin Simpson is the team’s investment in the future.

Team Penske is the most professionally run operation in American motorsport, period. Roger Penske’s organisation has been winning IndyCar races since 1971. Eighteen championship titles. Josef Newgarden, two-time champion and back-to-back Indianapolis 500 winner in 2023 and 2024, won at Gateway for the sixth time in his career in 2026. David Malukas — who moved from A.J. Foyt Enterprises to replace Will Power when Power shifted to Andretti — has been one of the revelations of the 2026 season, sitting third in the championship.

The question people ask most often is whether IndyCar is faster than Formula 1 — and the honest answer is: it depends where you measure. On an oval, an IndyCar at 240 mph is faster than any F1 car has ever gone anywhere. On a road circuit, a 2026 F1 car laps faster than an IndyCar by 20–30 seconds per lap at equivalent venues — because the F1 machine generates vastly more downforce and its tyres are wider and stickier. The two series are optimised for completely different things, which makes direct speed comparison somewhat misleading.

Which Is More Competitive — IndyCar or F1?

If your measure of competitiveness is the number of different winners per season and the closeness of racing, IndyCar wins easily. In 2026, nine races have produced six different winners across three manufacturers. In a typical F1 season, one team dominates and the champion is decided well before the final round. That’s a function of the constructor model: teams that invest the most in car development gain advantages that take seasons to erode.

In IndyCar, the spec chassis means a driver at a smaller team can beat the factory-backed frontrunners on any given weekend. The Indy 500 winner, Felix Rosenqvist, drives for Meyer Shank Racing — a team operating with a fraction of the resources available to Chip Ganassi or Team Penske. That outcome is possible in IndyCar. It is essentially impossible in modern F1 unless the leading team has a catastrophic reliability failure.