SEBRING, Fla. IndyCar Series teams hit the track on Monday for the first day of IndyCar Spring Training at Sebring Intl Raceway.

Another full day of testing is scheduled for Tuesday as teams prepare for the season-opening Firestone Grand Prix of St. Petersburg, Feb. 28 to March 2.

IndyCar enters the 2025 season with a new television partner as FOX Sports launches its inaugural season of IndyCar coverage with the seasons first practice in St. Pete on Friday, Feb. 28 on FS1.

All 17 races for the 2025 NTT IndyCar Series season will air on FOX, with two additional days during PPG Presents Armed Forces Qualifying May 17-18 ahead of the 109th Running of the Indianapolis 500 presented by Gainbridge creating a series-record 19 network windows.

The NTT IndyCar Series is the only premier motorsport series in North America with all races broadcasting on network television.

All IndyCar programming also streams live on the FOX Sports app.

This will be a season of unrivaled exposure for the NTT IndyCar Series, IndyCar President Doug Boles said. With phenomenal support of our sport across multiple massive platforms including Super Bowl LIX FOX Sports has proven to be a superb partner and promoter. With the season approaching, we know their unique style of engaging and innovative broadcasts will continue to raise the bar and drive an unparallelled growth opportunity for IndyCar.

As IndyCar moves forward with a new partner, the series announced several updates on Tuesday.

Lap counts at several IndyCar races have been extended, creating added dynamics for race teams.

Five laps have been added to the Acura Grand Prix of Long Beach, which will now be 90 laps. Ten additional laps have been added to the races at the Mid-Ohio Sports Car Course, which will now be 90 laps in length.

The Hy-Vee IndyCar Race weekend at Iowa Speedway doubleheader will increase by 25 laps to 275 laps for each of the two races.

Five laps have been added to Toronto for another 90-lap event and 19 laps have been added to the final race of the season at Nashville Superspeedway for a 225-lap contest.

The Hybrid Assist Unit was unveiled at Mid-Ohio on July 7 midway through the 2024 season but will be utilized at every IndyCar Series race in 2025.

The hybrid assist developed specifically for IndyCar through a first-of-its-kind collaborative effort by Chevrolet and Honda provides an added boost of 120 horsepower when used with traditional Push to Pass on road and street circuits. Used in tandem, a total of 800 horsepower is available to drivers for the first time in two decades.

New this season, use of the hybrid power unit will be allowed to start or restart the 2.2-liter twin- turbocharged V-6 engines on pit lane. As in 2024, hybrid assist will be allowed to restart a stalled race car on the race track on non-ovals.

From its full-field integration at the Milwaukee Mile Open Test on June 11 through the end of the 2024 season, 94,244 miles were completed with the system. Overall use and influence of hybrid assist increased race-over-race on road and street circuits and ovals.

Twelve of the 14 on-track passing records broken last year came after the introduction of the hybrid power unit.

Some IndyCar Series practice sessions will have an updated look in 2025.

At select road and street circuits (Streets of St. Petersburg, Long Beach, Detroit and Toronto and Barber Motorsports Park, Road America, Mid-Ohio Sports Car Course, WeatherTech Raceway Laguna Seca and Portland Intl Raceway), weekend tire allotments this season will include:

-One additional set of Firestone Firehawk alternates (five total).

-One less set of Firestone Firehawk primaries (five total).

Race teams will be allowed the freedom to use their weekend allotments as they see fit, reserving one set of new alternates, per the rulebook, for use during the race.

Tire allotments for event weekends at The Thermal Club and Indianapolis Motor Speedway road course remain unchanged from last year.

Also, on road and street circuits, split group practice sessions in Practice 1 will expand to all tracks except for Road America and its lengthy 4.014-mile layout. All cars will receive an initial 45-minute practice session before the start of two 10-minute segments, with groups split by odd and even numbered pit boxes. As in qualifying, the clock in Segments One and Two will stop for the first red-flag condition of each practice segment.

Popular high-line practice sessions will continue on all short ovals in 2025. The additional track time allows for drivers and teams to work in the upper groove of the race track, providing more grip ahead of the race.

An annual IndyCar review also has led to adjustments to procedures and rules for the upcoming season:

Ahead of a race start on ovals, there will be a mandatory pair up location with one to go to reduce the chance of incident and the need for waved off starts.

Where feasible for oval restarts, IndyCar will extend the beginning of the restart zone to give the leader wider discretion on the choice to accelerate. The ending location of oval restart zones will remain the same as in previous seasons.

A multistage pit lane speed limiter, as utilized at pit in at Road America and at pit out at World Wide Technology Raceway and Nashville Superspeedway, will be expanded to pit lane entry at WWT Raceway, Iowa Speedway and Nashville.

The 2024 road and street circuit restart line, where drivers must remain in single file and are prohibited from passing until reaching the designated line in the last corner, remains intact for 2025.

Additional EM Motorsport light panels, first used in 2022, will be used at all circuits. The additional lights will enhance the forewarning of conditions, particularly around blind corners.

Also, for safety, drivers will be alerted of local yellow conditions by a notification on driver cockpit dashes in addition to the light panels and traditional cloth flag notifications at marshal posts around each circuit.

Also noteworthy, alternate tires at Nashville Superspeedway again will be available for the 2025 IndyCar season finale at the Big Machine Music City Grand Prix. Last season, the championship race featured 653 on-track passes the most on record for the series at the track.

For the first time, an entire Indy NXT by Firestone season will be featured on live television. Announced in Dec. 12 Indy NXT races will appear live on FOX Sports FS1, with two airing on FS2.

Additionally, all practice and qualifying sessions for the IndyCar Series development series will air on a combination of FS1 and FS2.

After last season averaged the most starters (19.5) since 2009, the 2025 season is expected to match or exceed that number in a field featuring drivers from 10 countries.

Chip Ganassi Racing will add even more intrigue to the championship as it fields cars in Indy NXT for the first time since 2007.

Building on the series continued momentum, 2024 featured on-track passing records at four circuits, with qualifying records broken at six. Sixteen of the 33 starters in last years Indianapolis 500 presented by Gainbridge were graduates of Indy NXT.

The pathway to North Americas premier open-wheel series once again features a purse of $1.4 million. The series champion will receive $850,000 to be applied to a rookie oval test, the Indy 500 Open Test and Rookie Orientation Program, an entry for the 2026 Indianapolis 500 presented by Gainbridge and an entry for an additional 2026 NTT IndyCar Series event.

The 2025 championship team will receive a prize of $35,000.