Best GT4 Cars in iRacing 2026

The GT4 class has become one of the most popular racing categories on iRacing. With six cars from six different manufacturers, less power and downforce than GT3, and a driving experience that rewards skill over aero grip, GT4 is where you learn to race properly, and where many drivers find the closest, most rewarding wheel-to-wheel battles on the platform.

But which GT4 car should you buy? They’re all balanced by iRacing’s Balance of Performance system, so lap times are close. The difference comes down to handling characteristics, engine layout, and what suits your driving style. Here’s every GT4 car in iRacing and what sets each one apart.

Every GT4 Car in iRacing

All six GT4 cars compete in the GT4 Falken Tyre Challenge, the Falken Tyre Sports Car Challenge (alongside the Ligier JS P320), the IMSA Michelin Pilot Challenge (alongside the TCR class), and the Creventic Endurance Series.

Coach Dave Academy

In open setup series, having the right setup underneath you makes the difference between fighting for the win and fighting for scraps With Coach Dave Academy’s iRacing setups, you get professionally developed setups released weekly from our team of pro drivers and engineers, covering every car on the GT4 grid at every track on the calendar.

With a Delta subscription, setups install automatically when you load into a session, gives you Auto Insights AI coaching that breaks down your driving, and Video Analysis to review laps synced to telemetry data. It’s the fastest way to find time in any GT4 car.

Mercedes-AMG GT4 – The Best All-Rounder

The Mercedes-AMG GT4 is our top recommendation for most drivers. Its 4.0-litre twin-turbo V8 produces strong power and torque from a front-engine layout, making it forgiving and predictable in virtually every situation.

Why the Mercedes-AMG GT4 is the strongest pick

The Mercedes handles kerbs better than almost any other car in the class – a crucial advantage on circuits like Oulton Park, Donington, and Sebring where kerb riding defines your lap time. The front-engine layout gives it natural stability under braking and through high-speed corners, while the turbo V8 provides excellent drive out of slower bends.

It doesn’t have one standout party trick, but it also doesn’t have a significant weakness. That consistency across different circuit types is what makes it the best choice for a full twelve-week season – you won’t find yourself at a disadvantage at any particular track.

Where it struggles

The Mercedes isn’t the most agile GT4 car through tight, technical sections. The weight of the V8 up front means it won’t change direction as quickly as the mid-engined Porsche or McLaren. If you prefer a nimble, responsive car, the Mercedes can feel a little heavy.

Buy Mercedes-AMG GT4 iRacing setups here.

Best for: Drivers who want a car they can trust anywhere on the calendar. Excellent for beginners and experienced drivers alike.

Ford Mustang GT4 – The American Muscle Pick

The newest GT4 in iRacing, arriving with the Season 4 2025 update. The Mustang GT4 brings a naturally aspirated 5.0-litre Coyote V8 developed by Ford Performance in conjunction with Multimatic Motorsport – and it sounds every bit as good as you’d expect from an American V8 on a race track.

Why choose the Ford Mustang GT4

The Mustang is remarkably stable on any circuit. The heavy front end and NA V8 give it predictable behaviour under braking and through transitions, and it handles kerbs better than most of its rivals – you can lean on them without the car getting unsettled. The naturally aspirated power delivery is linear and easy to manage, with no turbo lag to surprise you on corner exit.

It also has competitive straight-line speed, making it strong on circuits with long straights where you can use the top-end power to pull alongside rivals into braking zones.

Where it struggles

The Mustang isn’t the most effective braker in the class. You may need to brake slightly earlier than in some rivals, and adjusting brake bias is important to dial in the corner entry balance – forward for stability, rearward for more rotation on turn-in. The weight also means it’s less agile through tight chicanes than the mid-engined cars.

Buy Ford Mustang GT4 iRacing setups here.

Best for: Drivers who value stability and predictability, and anyone who wants a front-engine GT4 with serious character. Also a great stepping stone toward the Ford Mustang GT3.

BMW M4 G82 GT4 Evo – The Straight-Line Weapon

The BMW M4 G82 GT4 Evo is the updated version of the original M4 GT4, featuring revised aerodynamics and updated bodywork that brings it in line with BMW’s current real-world GT4 programme. The Evo update refined the car’s handling balance while keeping its core strengths intact.

Why choose the BMW M4 GT4 Evo

The BMW has the best straight-line speed of any GT4 car in iRacing. Its 3.0-litre twin-turbo inline-six is efficient and powerful, and the aerodynamic package is optimised for low drag. On circuits with long straights like Daytona, Monza, Silverstone, COTA etc, the BMW’s top speed advantage is a genuine weapon for both qualifying and overtaking.

The handling is predictable and well-rounded. The front-engine layout gives it good stability, and the Evo updates improved the car’s responsiveness through medium-speed corners where the original M4 GT4 could feel slightly heavy.

Where it struggles

Despite the Evo improvements, the BMW still isn’t the most nimble car through tight, technical sections. The turbo inline-six also doesn’t deliver the same low-end punch as the V8-powered Mercedes or Mustang – you need to keep the revs up to access the best of the power band.

Buy BMW M4 GT4 Evo iRacing setups here.

Best for: Drivers who race at high-speed circuits and want to exploit straight-line speed. A solid all-rounder that rewards smooth driving.

Porsche 718 Cayman GT4 Clubsport MR – The Driver’s Car

Unlike the other GT4 cars in iRacing, the Porsche 718 Cayman GT4 Clubsport MR uses a mid-engine layout – the flat-six sits behind the driver, not in front. This gives it a fundamentally different handling character from the front-engined Mercedes, BMW, Mustang, and Aston Martin.

Why choose the Porsche 718 Cayman GT4 Clubsport MR

The Porsche is nimble, responsive, and rewards precise driving. The mid-engine layout creates natural rotation through corners, and the car changes direction with an agility that the heavier front-engined GT4s can’t match. If you enjoy a car that feels alive and communicates grip levels through the wheel, the Porsche delivers.

The flat-six engine has a distinctive sound and delivers smooth, usable power. The mid-engine weight distribution also means the car is generally well balanced, without the heavy front-end push that can affect the Mercedes or BMW in tight corners.

Where it struggles

The mid-engine layout that makes the Porsche so agile also makes it less forgiving. You need to be more careful over kerbs as the car can get unsettled, where a front-engined GT4 would shrug it off. Under braking, the Porsche can develop understeer if you’re too aggressive on initial turn-in, and the rear can snap if you trail-brake too deep. It requires more respect than the Mercedes or Mustang.

Buy Porsche Cayman GT4 iRacing setups here.

Best for: Experienced drivers who enjoy a car that rewards precision. Not the easiest GT4 to learn, but the most rewarding to drive quickly.

McLaren 570S GT4 – The Mid-Corner Specialist

The McLaren 570S GT4 is the second mid-engined option in the GT4 class, powered by a 3.8-litre twin-turbo V8 mounted behind the driver. It shares the mid-engine philosophy of the Porsche but delivers a different driving experience – slightly more planted, slightly more reliant on mechanical grip through the corners.

Why choose the McLaren 570S GT4

The McLaren’s mid-engine layout gives it excellent weight distribution, which translates into strong mid-corner grip. Once you’ve committed to a corner and reached the apex, the 570S is remarkably composed – it carries speed through the middle of corners better than most GT4 cars. The twin-turbo V8 provides strong mid-range torque for good drive on exit.

The McLaren also tends to be gentle on its tyres compared to some rivals, which is an advantage in longer stints and endurance events.

Where it struggles

Like the Porsche, the McLaren’s mid-engine layout makes it less forgiving than the front-engined options. It can be tricky under braking, and kerb handling isn’t as confident as the Mercedes or Mustang. The car also lacks the outright straight-line speed of the BMW, which can leave you vulnerable on high-speed circuits.

Buy McLaren 570s GT4 iRacing setups here.

Best for: Drivers who value cornering grip and tyre management over outright speed. A good endurance choice.

Aston Martin Vantage GT4 – The Underdog

The Aston Martin Vantage GT4 is the most overlooked car in the class, but it has its merits. Its 4.0-litre twin-turbo V8 sits up front driving the rear wheels, giving it the same basic layout as the Mercedes, BMW, and Mustang – but the Aston has a character all its own.

Why choose the Aston Martin Vantage GT4

The Aston Martin has more natural rotation than you’d expect from a front-engined car. Where the Mercedes and BMW can feel nose-heavy in tight corners, the Aston is willing to turn in and rotate without excessive persuasion. It also handles kerbs reasonably well and has competitive straight-line speed from its turbo V8.

It’s robust too. The Aston can absorb minor contact and rough treatment better than most GT4 cars, which is valuable in close racing situations where surviving the first lap matters as much as outright pace.

Where it struggles

The Aston Martin is generally considered the weakest car in the class on outright pace. The rear end can be tricky to manage at low speed, and the car lacks the overall polish and balance of the Mercedes or BMW. If you’re chasing consistent front-running results, the other five cars on this list will serve you better.

Buy Aston Martin GT4 iRacing setups here.

Best for: Drivers who want a front-engined GT4 with more character than the Mercedes, and anyone who values robustness in close racing. Not the fastest choice, but a rewarding one.

Which GT4 Car Should You Buy?

If you can only buy one GT4 car, buy the Mercedes. It’s the safest choice across an entire season and will rarely leave you at a disadvantage. If you want something with more character, the Ford Mustang GT4 is the next best pick.

Get Setups for Every GT4 Car

With a Delta subscription, you get professionally developed setups for every GT4 car at every track on the iRacing calendar – released weekly and installed automatically when you load into a session. Each setup includes qualifying, race, and endurance variants, plus reference laps and telemetry data from our pro drivers.

Delta’s Auto Insights AI coaching analyses your driving corner by corner, showing you exactly where you’re losing time on braking, apex speed, and throttle application. When you’re learning a new GT4 car or switching between them, that targeted feedback cuts hours off your learning curve.