Park a Formula 1 car next to an IndyCar and most casual viewers would hesitate to say which is which. Both are open-wheel single-seaters with wings, slick tires, and a driver sitting inches above the asphalt. The resemblance ends almost as soon as you look past the silhouette.
Formula 1 is a constructors’ championship. Ten teams design, build, and relentlessly develop their own cars, and that engineering arms race is the sport. IndyCar runs the opposite philosophy: every team buys the same Dallara chassis, fits one of two engines, and goes racing. One series asks who can build the best car. The other asks who can race the same car best. It is the same spec-versus-bespoke split that separates F1 from its own feeder series in our F1 vs Formula 2 comparison.
That single decision — bespoke versus spec — explains nearly every other difference between the two, from budgets and top speeds to the way a pit stop unfolds.
Two Philosophies of Building a Race Car
An F1 team employs hundreds of engineers and aerodynamicists. The monocoque, suspension, gearbox casing, and every winglet are designed in-house, refined in wind tunnels whose usage the rules now meter, and updated race by race. A midfield upgrade package that finds two tenths of a second is treated as a triumph. If you have ever wondered how much an F1 car costs to build, the answer runs well into eight figures before a wheel turns.
IndyCar teams buy the Dallara IR-18, a chassis introduced in 2018 and shared by the entire field, dressed in a universal aero kit. Engineering effort goes into dampers, setup, and race execution rather than bodywork invention. The result is a grid where a well-drilled small team can genuinely beat the giants on merit, and where a single season routinely produces winners from half a dozen different organizations.
The Numbers, Side by Side
The headline figures tell the story more crisply than any analogy.
| Formula 1 | IndyCar | |
|---|---|---|
| Chassis | Bespoke, built by each team | Spec Dallara IR-18 |
| Engine | 1.6L V6 turbo hybrid | 2.2L twin-turbo V6 |
| Power | ~1,000 hp combined | ~700 hp, plus push-to-pass |
| Minimum weight | 798 kg including driver | ~780 kg before driver |
| Peak speed | ~220 mph with a tow | ~240 mph at Indianapolis |
| Refueling | Banned since 2010 | Standard at every stop |
| Circuits | Road and street only | Ovals, road, and street |
| Spending | $135M+ cost cap per team | Roughly $10–15M per car |
The weight figures look close on paper, but the F1 car carries far more downforce-generating surface for that mass — which is where lap time lives.
Power: Hybrid Precision vs Twin-Turbo Muscle
The modern F1 power unit is the most thermally efficient racing engine ever built: a 1.6-liter V6 turbo paired with an energy-recovery system that harvests braking and exhaust energy and redeploys it electrically. Combined output sits around 1,000 horsepower, delivered with software-managed subtlety. The full picture is worth a separate read in our guide to F1 engine specs.
IndyCar’s 2.2-liter twin-turbo V6, supplied by Chevrolet or Honda, makes roughly 700 horsepower and gained a modest hybrid boost in 2024. Drivers also carry push-to-pass, a timed overboost reserve used tactically on road and street courses. The IndyCar engine is louder, angrier, and far cheaper to lease — a deliberate trade. The same gulf in electric sophistication separates F1 from the all-battery world of Formula E versus F1.
Ovals, Speed, and What Faster Really Means
Here the comparison becomes genuinely interesting. IndyCar’s calendar mixes superspeedways, short ovals, road courses, and street circuits; Formula 1 abandoned ovals generations ago. At Indianapolis, qualifying runs average above 230 mph across four flying laps, with trap speeds touching 240 mph. No F1 car reaches those numbers — as our look at how fast F1 cars really go explains, even Monza tows rarely push past 220 mph.
TRAP SPEED VS LAP TIME
An IndyCar touches 240 mph at Indianapolis, yet on a shared road course an F1 car laps double-digit seconds quicker. Straight-line speed and outright pace are different sports.
On a road course, the order reverses emphatically. When both series visited Circuit of the Americas, the F1 pole lap was on the order of fourteen seconds faster. Downforce, braking power, and cornering grip — an F1 car can sustain lateral loads above 5g — are simply on another level. IndyCar wins the speedometer; F1 wins the stopwatch.
Pit Stops, Fuel, and the Money Behind It
Refueling has been banned in Formula 1 since 2010, so a pit stop is a pure tire change: around twenty crew members swarm the car and release it in roughly two seconds, a choreography we unpack in the fastest pit stops in F1 history. Strategy revolves around tire degradation and track position.
IndyCar still refuels. Six crew members work over the wall, a stop takes seven to nine seconds, and fuel mileage becomes a live strategic weapon — saving fuel to skip a stop has decided countless races, including the Indy 500. The budgets diverge just as sharply. F1 teams operate under a cost cap above $135 million, with driver salaries and other items excluded on top. A competitive IndyCar entry runs on roughly a tenth of that.
Different Questions, Both Worth Asking
The honest answer to which series is better is that they are not trying to do the same thing. Formula 1 is a global engineering contest where the car is half the protagonist, played out across twenty-four Sundays of accumulated tension. IndyCar is a driver’s championship in the most literal sense, where equipment excuses are scarce and a rookie can lead the Indy 500. The same oval-versus-road argument runs through the more familiar transatlantic rivalry in our F1 vs NASCAR breakdown. Watch F1 for the spectacle of machines at the edge of what regulations allow. Watch IndyCar to see what the same machine reveals about the people inside it. The well-rounded fan keeps a seat at both tables.