GT3 is the busiest sports car class in iRacing. There are 11 current GT3 cars, and they race in the GT Sprint Series, the GT Endurance Series, the IMSA iRacing Series, the fixed-setup GT3 Challenge and the big special events.
This guide covers every car as of 2026 Season 4, which started on 15 September 2026. You’ll find what each car is like to drive, who it suits, and what changed in the latest Balance of Performance (BoP) update. BoP keeps the cars close, so no GT3 is a bad buy. The right car is the one that suits your driving.
Updated October 2026 for 2026 Season 4 (build 2026.09.09 and Patch 1).
All 11 GT3 cars in iRacing compared
| Car | Layout and engine | Strengths | Weaknesses | Suits |
| Acura NSX GT3 EVO 22 | Mid-engine, 3.5 twin-turbo V6 | Sharp turn-in, strong braking | Hard to keep stable over a stint | Precise drivers who like a pointy car |
| Aston Martin Vantage GT3 EVO | Front-mid, 4.0 twin-turbo V8 | Stable, forgiving, good on long runs | Mild understeer, can step out on exit | Endurance racers, all-rounders |
| Audi R8 LMS EVO II GT3 | Mid-engine, 5.2 V10 | Good in corners and over kerbs | Narrow setup window | Drivers who like to tune |
| BMW M4 GT3 EVO | Front-engine, 3.0 twin-turbo straight-six | Forgiving, consistent, good on kerbs | Not the quickest through slow corners | Beginners and consistency-first racers |
| Chevrolet Corvette Z06 GT3.R | Mid-engine, 5.5 V8 | Straight-line speed, great sound | Demanding in slow corners | Confident drivers who like power |
| Ferrari 296 GT3 | Mid-engine, 3.0 twin-turbo V6 | Balanced and predictable | Less downforce after the Season 4 BoP | Ferrari fans, single-make racers |
| Ford Mustang GT3 | Front-engine, 5.4 V8 | Stable, easy on tyres, strong top speed | Heavy, understeer on entry | Endurance and front-engine fans |
| Lamborghini Huracán GT3 EVO | Mid-engine, 5.2 V10 | Excellent mid-corner rotation | Less forgiving than the front-engined cars | Drivers who carry corner speed |
| McLaren 720S GT3 EVO | Mid-engine, 4.0 twin-turbo V8 | High downforce, copes well in traffic | Needs precise inputs | Fast-corner specialists |
| Mercedes-AMG GT3 EVO | Front-mid, 6.2 V8 | Strong front end, rides kerbs, tough | Big and heavy in tight sections | Everyone from beginners to aliens |
| Porsche 911 GT3 R (992) | Rear-engine, 4.2 flat-six | Huge traction and braking | Tricky on entry, punishes mistakes | Experienced drivers chasing the limit |
Want to hear it from a pro? Coach Dave Academy’s Yuri Kasdorp ranks every GT3 car in iRacing:
What changed in the 2026 Season 4 BoP
iRacing changed the GT3 BoP with the Season 4 build on 9 September 2026. Most changes cut fuel efficiency, and some cars also lost torque or downforce:
- Ford Mustang GT3: less downforce, less torque, worse fuel economy.
- Porsche 911 GT3 R (992): more downforce, less drag (except at high speed), less torque.
- Ferrari 296 GT3: less drag and downforce, slightly worse fuel economy.
- McLaren 720S GT3 EVO: slightly less torque, worse fuel economy.
- Chevrolet Corvette Z06 GT3.R: slightly less torque, worse fuel economy.
- BMW M4 GT3 EVO and Acura NSX GT3 EVO 22: worse fuel economy.
- Mercedes, Aston Martin, Audi and Lamborghini: no change.
The Corvette and Ferrari also got updated rear suspension, all GT3s now use two wheel guns in the pits, and iRacing’s baseline setups were updated. BoP changes with each season build and sometimes in mid-season patches, so check the latest notes before you buy a car on last season’s form.
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The GT3 cars in detail
Mercedes-AMG GT3 EVO
The Mercedes (listed in iRacing as the Mercedes-AMG GT3 2020) has a big, naturally aspirated 6.2-litre V8. It has a strong front end, rides kerbs well and shrugs off damage. It’s forgiving enough for newer drivers and fast enough for experts. → Mercedes-AMG GT3 EVO guide
Ford Mustang GT3
The Mustang has a front-mounted 5.4-litre V8 and arrived in 2024 Season 3. It’s stable, kind to its tyres and quick in a straight line, but it’s big and can understeer on entry. Season 4 took away some downforce and torque. → Ford Mustang GT3 guide
Lamborghini Huracán GT3 EVO
The Huracán has a naturally aspirated V10 behind the driver and rotates well mid-corner. It’s less forgiving than the BMW or Mercedes. If you know it from ACC, expect it to feel different here. → Lamborghini Huracán GT3 EVO guide
Porsche 911 GT3 R (992)
The Porsche is the only rear-engined GT3. It has huge traction and braking, but the weight at the back makes it tricky on entry. It has the highest ceiling for drivers who can handle it. → Porsche 911 GT3 R (992) guide
Aston Martin Vantage GT3 EVO
The Aston is the newest GT3 in iRacing, added in 2025 Season 4. It has a front-mid, AMG-sourced 4.0-litre twin-turbo V8 and is stable and forgiving. Watch for mild understeer and a loose rear on exit. It’s a strong pick for endurance races. → Aston Martin Vantage GT3 EVO guide
Acura NSX GT3 EVO 22
The Acura is a mid-engined car with a twin-turbo V6. It turns in sharply and brakes well. It can be hard to keep stable over a full stint, so it rewards smooth, precise drivers. → Acura NSX GT3 EVO guide
- Professional Sports & Formula iRacing Setups
- Telemetry Data - Brake, Throttle & Racing Lines
- AI Coaching To Gain Seconds in Lap Time
- Pro Reference Laps & Fixed Data Packs
Chevrolet Corvette Z06 GT3.R
The Corvette has a mid-mounted, naturally aspirated 5.5-litre V8. It’s quick in a straight line and sounds great, but it asks a lot in slow corners. Season 4 trimmed its torque and updated the rear suspension. → Corvette Z06 GT3.R guide
McLaren 720S GT3 EVO
The McLaren makes a lot of downforce, and its aero holds up well in dirty air. That helps in traffic and fast corners. It needs precise inputs to get the most from it. → McLaren 720S GT3 EVO guide
Ferrari 296 GT3
The Ferrari uses a mid-mounted twin-turbo V6. It’s balanced and predictable, which makes it easy to trust. Season 4 cut its drag and downforce and updated the rear suspension. → Ferrari 296 GT3 guide
Audi R8 LMS EVO II GT3
The Audi shares its platform with the Lamborghini and has a naturally aspirated V10. It’s good through corners and over kerbs. The setup window is narrow, so it suits drivers who like to fine-tune. → Audi R8 LMS EVO II GT3 guide
BMW M4 GT3 EVO: the full picture
The BMW M4 GT3 is one of the most popular cars in iRacing. Since 2025 Season 4 it has been the EVO version. iRacing applied the update to the existing car for free, so every M4 GT3 owner now drives the EVO. In the sim it still appears as “BMW M4 GT3”.
What it’s like to drive. The M4 has a front-mounted 3.0-litre twin-turbo straight-six, rated at 590 hp on iRacing’s car page. It’s stable and consistent, and it handles kerbs well. Lots of torque lets you take corners a gear higher. It doesn’t love big, aggressive kerbs or sudden mid-corner downshifts.
What changed in 2026:
- Season 1: a new engine model, with changes to the torque curve, rev limiter and shift lights.
- Season 2 (Patch 3): BoP gave it slightly less mass and slightly less torque.
- Season 4: BoP reduced fuel efficiency, and the shift lamp now fills left to right like the real car.
- Season 4 Patch 1: the shift-light RPM changed again. Upshift when all the lights turn red.
If you learned the M4 on an older shift point, re-learn it: the lights changed twice in Season 4.
Who should drive it. The M4 suits newer GT3 drivers and anyone who values consistency over a long race. It doesn’t punish small mistakes, so you can push lap after lap. That makes it a great car for learning racecraft in GT3. Read our full BMW M4 GT3 guide.
Getting it set up. Small setup changes go a long way in the M4. Our pro iRacing setups cover the BMW M4 GT3 EVO in every GT3 series we support this season.
Which GT3 car is best for you?
- New to GT3: BMW M4 GT3 EVO or Mercedes-AMG GT3 EVO. Both are stable and forgiving.
- Endurance racing: Aston Martin Vantage GT3 EVO or Ford Mustang GT3. Both are stable and easy on tyres.
- You like a car that rotates: Lamborghini Huracán GT3 EVO or Audi R8 LMS EVO II GT3.
- You want the highest ceiling: Porsche 911 GT3 R (992). It’s hard work but very rewarding.
- You love fast corners: McLaren 720S GT3 EVO.
- You want one car for everything: pick one that races in every GT3 series you plan to enter, then learn it properly. Seat time beats chasing the BoP.
Setups for every GT3 car
A good setup gives you a car you can trust. Delta has pro setups for all 11 iRacing GT3 cars, updated every week for the GT3 series we cover, and installs them when you join a session. You also get telemetry, reference laps and AI coaching to find your time. See our iRacing setups.
Related: The Ultimate iRacing Setup Guide · Best GT4 Cars in iRacing · Best Cars to Buy in iRacing · Our Season 4 2026 plan
- Professional Sports & Formula iRacing Setups
- Telemetry Data - Brake, Throttle & Racing Lines
- AI Coaching To Gain Seconds in Lap Time
- Pro Reference Laps & Fixed Data Packs
iRacing GT3 FAQ
There are 11 current GT3 cars in 2026 Season 4. Older GT3s, like the BMW Z4 GT3 and Ferrari 488 GT3, are still in the sim as Legacy cars, but they aren’t part of the current GT3 class.
The Aston Martin Vantage GT3 EVO, added in 2025 Season 4. No new GT3 cars have been added in 2026 so far.
No. iRacing updated the existing BMW M4 GT3 to EVO spec in 2025 Season 4, and owners got it for free. It still shows as “BMW M4 GT3” in the sim.
The BMW M4 GT3 EVO and the Mercedes-AMG GT3 EVO are the easiest to drive. Both are stable and forgiving, so you can focus on learning tracks and racecraft.
iRacing usually changes GT3 BoP with each new season build, and sometimes adjusts it again in mid-season patches, as it did in April 2026. The latest change came with 2026 Season 4 on 9 September 2026.
