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NEXT BUILD Season 4: September 2026
5 Confirmed
13 Likely
10 Small Chance
See It All Below โ†“
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  • iRacing Suzuka 1000 GT3 endurance race at Suzuka International Racing Course Grand Prix layout

    iRacing Suzuka 1000 GT3 Endurance Event Guide

    The iRacing Suzuka 1000 runs September 11-13 at Suzuka Grand Prix. Get the schedule, eligible GT3 cars, team rules, and entry requirements.

    Read More iRacing Suzuka 1000 GT3 Endurance Event GuideContinue

  • iRacing DTM Series GT3 cars racing on track in the 2026 official series

    iRacing DTM Series Now Official With Eight 2026 Races

    The iRacing DTM Series is official for 2026, with eight rounds mirroring the real-world DTM calendar. Hereโ€™s the full schedule and how to enter.

  • GTP prototype car racing in iRacing showing LMP2 before GTP progression

    Do You Need to Race LMP2 Before GTP in iRacing?

    You do not have to race LMP2 before moving to GTP in iRacing. But skipping the prototype ladder has real consequences for your pace and racecraft when you arrive in the top class.

Up Next ยท Special Event

Knoxville Nationals

Knoxville Raceway ยท 410 Sprint Cars

Aug 4โ€“9

See Event Info โ†’ All Races & Events
  • iRacing Week 13 Fun Series: All 8 Running in 2026

    iRacing Week 13 fun series for 2026 includes eight unofficial races: two returning favorites and six new formats. Here is what is on the grid before Season 4 drops.

  • iRacing Season 3 Week 13: Weather Rerolls and New Race Formats

    iRacing Season 3 Week 13 brings Weather Rerolls across multiple series, a three-phase Porsche Cup format, an expanded 17-car iTested roster, and full-distance Truck racing at New Hampshire.

  • iRacing Week 13: New Season 4 Cars Available to Drive Now

    iRacing Week 13 is here. Try the Caterham 420R, Caterham Academy, and Aston Martin Valkyrie AMR-LMH now before Season 4 officially begins.

iRacing 2026 Season 4 Build Tracker

Everything we know for the next iRacing build.

🛠Next Build: Season 4 — September 202632 items tracked
12Confirmed
  • Aston Martin Valkyrie AMR-LMH S4 Confirmed:#cars#endurance#next-build#next-build-confirmed#confirmed
  • Gen 4 Grand National S4 Confirmed:#cars#nascar#next-build#next-build-confirmed#confirmed
  • Mazda MX-5 Physics Rework S4 Confirmed:#cars#physics#next-build#next-build-confirmed#confirmed
  • Pit Summary & Car Damage UI S4 Confirmed:#features#ui#next-build#next-build-confirmed#confirmed
  • Future Track Refreshes and Rescans#oval-tracks#next-build#next-build-confirmed#road-tracks#confirmed
  • Multiclass Starts S4 Confirmed (Race Control UPDATE 2):#features#next-build#next-build-confirmed#confirmed
  • Physics Islands: Multi-Threading Overhaul S4 Confirmed UPDATE 2:#physics#next-build#next-build-confirmed#confirmed
  • Caterham Academy & 420R S4 Confirmed UPDATE 3:#cars#next-build#next-build-confirmed#confirmed
  • Track Reverb & Reverb Zones#features#next-build#next-build-confirmed#confirmed
  • Circuit Bugatti#road-tracks#next-build#next-build-confirmed#confirmed
  • Aston Martin Vantage AMR-LMH (GTP)#cars#endurance#next-build#next-build-confirmed#confirmed
  • Bahrain International Circuit#road-tracks#next-build#next-build-confirmed#confirmed
10Likely
  • iRacing confirms Career Mode is coming! UPDATE 10:#features#career-mode#next-build#next-build-likely#confirmed
  • Summit Point Motorsports Park Refresh#road-tracks#next-build#next-build-likely#wip
  • New Helmet Model UPDATE:#features#next-build#next-build-likely#confirmed
  • Circuit Paul Ricard#road-tracks#next-build#next-build-likely#confirmed
  • Oval Rubber/Surface Behavior Updates#physics#next-build#next-build-likely#confirmed
  • Dirt Oval Improvements#features#next-build#next-build-likely#confirmed
  • GT3 Pit Stop Animation#features#next-build#next-build-likely#confirmed
  • Save Feature#features#next-build#next-build-likely#confirmed
  • Circuit Ricardo Tormo#road-tracks#next-build#next-build-likely#confirmed
  • Winchester Speedway#oval-tracks#next-build#next-build-likely#wip
10Small Chance
  • Spark: iRacing's New Graphics Engine UPDATE 3:#graphics#next-build#next-build-longshot#confirmed
  • IndyCar Street Courses UPDATE:#road-tracks#next-build#next-build-longshot#rumor
  • 128 Cars Per Session#features#next-build#next-build-longshot#future
  • NTMv10 Future Tire Model#physics#next-build#next-build-longshot#confirmed
  • Salem Speedway#oval-tracks#next-build#next-build-longshot#rumor
  • TT Circuit Assen#road-tracks#next-build#next-build-longshot#rumor
  • 2027 Mercedes AMG GT3 Coming to iRacing?#cars#gt3#next-build#next-build-longshot#rumor
  • Bowman Gray Stadium coming to iRacing? UPDATE 3:#oval-tracks#next-build#next-build-longshot#rumor
  • Kyalami Grand Prix Circuit#road-tracks#next-build#next-build-longshot#rumor
  • Croft Circuit#road-tracks#next-build#next-build-longshot#wip
Last updated: August 28, 2026
    View Full Build Tracker

    Inside iRacing

    • Porsche Esports Supercup race action at Fuji Speedway in iRacing

      Porsche Esports Supercup World Championship Starts Sept. 19

      The 2026 Porsche Esports Supercup World Championship begins September 19 at Spa. 32 qualified drivers, five circuits, $10K prize, and a real-world Porsche drive at stake.

    • Dallara IR-18 in iRacing, the car used in the INDYCAR iRacing Series finale at WeatherTech Raceway Laguna Seca

      INDYCAR iRacing Series Finale Heads to Laguna Seca

      The INDYCAR iRacing Series wraps up its 2026 season at Laguna Seca on Saturday, September 5, with Round 17 of 17 in the Dallara IR-18. Coverage starts at 2 PM ET via P1 Broadcasting.

    • iRacing Physics Islands Explained

      iRacing Physics Islands is a multithreaded refactor of the core physics loop that cuts CPU overhead by 50 percent in full-field races. Here is how it works and what it enables.

    • Steven Wilson Wins eNASCAR Race 10 for Championship 4 Spot

      Steven Wilson dominated eNASCAR Race 10 at Michigan, leading 53 of 73 laps to clinch his Championship 4 Finale spot and record his 20th career win.

    • Mazda MX-5 Cup cars racing side by side in iRacing, a Class D road series similar to the incoming Caterham Academy

      Caterham Academy and 420R Confirmed for iRacing Season 4

    • iRacing racing at Road Atlanta, a circuit that will benefit from the new night racing lighting engine

      Night Racing Is Coming to iRacing for the First Time

    • Aston Martin Valkyrie AMR-LMH racing in iRacing Season 4 2026

      Aston Martin Valkyrie AMR-LMH Confirmed for iRacing Season 4

    • iRacing oval racing at Milwaukee Mile, representing the grassroots career path in iRacing Career Mode

      iRacing Career Mode Enters Final Polish with 7 Distinct Paths

    • iRacing Toyota GR86 Cup on circuit, an ideal car for methodically learning a new iRacing track layout and building braking references

      How to Learn a New iRacing Track Faster

    More #InsideiRacing

    Speed & Strategy

    • Multiple iRacing cars racing wheel-to-wheel on a road circuit during an online race session

      Your First iRacing Race: A Practical Plan

      Nervous about your first iRacing race? Here is a practical plan covering qualifying, Lap 1, incident points, and what to review when it is done.

    • iRacing MX-5 Cup cars racing side by side on track, illustrating the close competition where iRacing consistency and pace both matter

      Is Consistency Enough in iRacing? When Pure Pace Matters More

      iRacing consistency keeps you safe and incident-free through the early license levels. But thereโ€™s a point where clean laps stop being enough, and finding pace becomes the real work.

    • iRacing Season 3 Patch 3 multiclass race start at Sebring International Raceway

      Rolling Start Etiquette in iRacing

      Rolling starts in iRacing are not always instinctive. Here is what the pole sitter controls, when the field can go, and how to avoid jump start penalties.

    More Speed & Strategy
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    Track Hub

    • Why Monza Can Be Chaos in iRacing

      Why Monza Can Be Chaos in iRacing

    • Surviving Monza in iRacing โ€“ A Practical Guide

      Surviving Monza in iRacing โ€“ A Practical Guide


    • Darlington Raceway: Screenshot Gallery

    • Watkins Glen International: Screenshot Gallery

    • Homestead-Miami Speedway: Screenshot Gallery

    Go to iRacing Track HUB

    Car Hub

    • Beginner Setup and Driving Tips for the Dirt Legends Ford ’34 Coupe

      Beginner Setup and Driving Tips for the Dirt Legends Ford ’34 Coupe

    • The Free Gem: Why the CTS-V is the Best Way to GT3

      The Free Gem: Why the CTS-V is the Best Way to GT3


    • The 488 GTE Legacy: Ferrariโ€™s Enduring iRacing Legend


    • Pro Mazda to Legacy: The Indy Pro 2000 Transition


    • Lucas Oil Off Road Trucks โ€” Screenshot Gallery


    Go to iRacing Car HUB
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    ICYMI

    • iRacing Suzuka 1000 GT3 Endurance Event Guide
    • iRacing DTM Series Now Official With Eight 2026 Races
    • Do You Need to Race LMP2 Before GTP in iRacing?

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