RSS GT-M Macca 72 V8 Evo Review (McLaren 720S GT3 Evo): The GT3 Mod That Feels “Official”

There are a lot of “good” GT3 mods in Assetto Corsa. And then there are the mods that feel like they belong in a standalone DLC pack. The RSS GT-M Macca 72 V8 Evo is firmly in that second category.

This is Race Sim Studio’s take on the McLaren 720S GT3 Evo, built as part of their GT-M ecosystem, and it is exactly what you hope for from RSS: near-flawless modeling, great force feedback, and a driving experience that feels stable and confidence-inspiring without becoming boring or sterile.

It is a paid mod, it requires CSP to run properly, and it sits inside a pack that already has a reputation for being one of the best “modern GT” lineups in Assetto Corsa. After testing it at Spa-Francorchamps and Detroit Belle Isle, I get why it’s been so anticipated.

Find the Macca 72 on the Race Sim Studio store:

The Real Car Behind It: McLaren 720S GT3 Evo

The McLaren 720S GT3 Evo is the updated version of McLaren’s customer racing GT3 platform, built around the MonoCage II carbon chassis and a race-prepped 4.0L twin-turbo V8 (M840T-based). Like every GT3 car, output is governed by Balance of Performance, so you should think of it as a roughly 500–600 hp race car depending on series and BoP rather than a fixed number.

What makes the Evo worth talking about is not a dramatic reinvention, but refinement where it counts in racing. McLaren’s changes focus heavily on aero and usability, with updates designed to increase overall downforce, shift balance forward, and make the car more consistent in traffic. The goal is a wider, more predictable performance window for teams across sprint and endurance formats, which is exactly the kind of “confidence-first” character you want a modern GT3 to have.

Key Specs (Real Car Context)

GT3 cars run under Balance of Performance, so power varies by series and season. In practice, the 720S GT3 Evo typically sits in the ~500-600 bhp range depending on BoP.

• Engine: 4.0L twin-turbo V8 (race-prepared M840T-based)
• Power: ~500–600 bhp (BoP-dependent)
• Layout: Mid-engine, RWD
• Transmission: 6-speed sequential (GT3-spec)
• Class: Modern GT3

Installation and Requirements

This one is straightforward, but there are two important notes:

• CSP required: You need Custom Shaders Patch 0.2.7 (2.7) or newer.
• RSS ecosystem: It also uses RSS’s own settings workflow (their app/settings approach) to get the full experience.

No special folders, no weird sound patching, no “download this extra fix” step. Install it like a normal high-end AC mod, and you’re basically good.

Model Quality: Exterior and Interior Are Ridiculously Good

This is the part where RSS does RSS things.

From the outside, the car looks like a proper modern GT3 build, not just a pretty shape with a generic texture pass. The proportions are spot-on, the aero elements look correct, and the detail density is high without looking noisy. Even up close, it holds together. Latches, fasteners, vents, panel transitions, and all the small stuff that usually gets simplified is modeled to a level that makes most mods look unfinished.

Inside, it’s even better. Cockpit detail is near perfect. Small stickers, wiring, camera bits, and the overall “race car lived-in” feel is all there. This is one of those interiors where you can pause, look around, and keep finding new details. Textures and reflections are excellent, and I did not notice any obvious clipping, missing geometry, or broken shadows during testing.

If you care about VR immersion or just want a car that looks right in replays, this is easily top-tier.

Sound: As Good As Assetto Corsa Lets It Be

The sound is very realistic and it matches the character you expect from a modern turbo V8 GT3. It has presence, it has that deeper tone under load, and it feels like it belongs in the car.

At the same time, you still feel Assetto Corsa’s age here. Even the best AC sound packs sometimes miss that last layer of complexity you get in newer sims, especially in the really fine transient details and the way the environment interacts with the audio.

But for Assetto Corsa, this is about as good as it gets. No weird loops, no jarring sample transitions, and no “mod sound” vibe.

Physics Quality and Driving Experience

On track, the first word that comes to mind is planted.

Like a lot of RSS GT3-style cars, the Macca 72 Evo leans slightly toward understeer on the stock setup, especially if you drive it with impatience. But the important detail is that it does not feel lazy. With good technique and the right inputs, you can get it to rotate well and it rewards clean driving.

Stability and Confidence

At Detroit Belle Isle, the car felt extremely stable over kerbs and bumps. Any time it moved around, it was predictable. That matters on a street circuit where you want to run close to walls without constantly second-guessing the rear end. I never got a slide that felt random or “AC physics weird”. The feedback makes it easy to sense what the chassis is doing.

At Spa, it feels like a proper modern GT3. Composed in fast corners, predictable in long stints, and not overly snappy even when you’re pushing. I think endurance racing in this car would be a pleasure, if you can find a race in today’s Assetto Corsa landscape.

Braking Behavior

Under braking, it’s mostly what you want from a GT3. Stable, confidence-inspiring, and not overly dramatic. The only time it really wants to step out is if you aggressively load the rear before you’re even properly on the brake pedal. If you are messy, it will punish you, but in a believable way.

Force Feedback and Steering Weight

Steering weight is slightly heavy for a GT3 feel, but nothing extreme. The clarity is excellent. You feel load build-up, you feel the car settle, and you get that RSS signature “the car is talking to you” sensation. It’s a big part of why the car feels so drivable.

Standout Features

This mod is not just a pretty face. It has the kind of functional polish that separates “good” from “premium”:

• Adjustable ABS and throttle maps
• Multi-stage aero behavior through physics
• Full lighting and animation set
• Advanced digital dash with popups and multiple indicators
• Rotating steering wheel dials that reflect setting changes
• Animated helmet visor detail
• High-quality liveries with branding that stays copyright-friendly

It also sits in RSS’s broader GT-M environment, which matters if you already own other cars in the pack. Consistency across the lineup is a big selling point.

Downsides

This is one of those reviews where the negatives are mostly nitpicks, but they’re still worth stating:

1. Limited variants: You are getting the Evo-style version here. If you want variety like a pre-Evo flavor or something like the GT3X unrestricted version, that is not included in this release.
2. Dash presentation nitpick: The dashboard is slightly off in small UI/font details. Most people will never care, but it’s noticeable if you’re picky. This could also be a copyright issue.
3. Requires CSP and the RSS Settings: Not really a flaw, but it’s a “know before you buy” point. This is not a vanilla AC car.

Do note that these are truly small issues, and don’t take anything from the value of this mod.

Is It Worth the Money?

Yes.

At roughly £4.19 for the standalone car, this is priced like an impulse buy, but it delivers quality that easily clears that bar. RSS also sells it as part of the GT-M Phase 2 pack, so depending on what you already own, the pack can be the better value long term.

The biggest reason it is worth it is simple: if you want modern GT3 quality in Assetto Corsa, the list of mods that truly deliver it is short. There are free 720S-style options out there, but in terms of modeling, physics polish, and overall presentation, this is on another level.

Space in the Assetto Corsa Market

The GT-M series is basically the “default answer” for modern GT-style racing in Assetto Corsa if you care about quality. This car does not fill some missing niche, because the niche is already strong, but it absolutely strengthens the best ecosystem that AC currently has for this category.

It’s also the type of release that keeps the AC modding scene healthy, because it raises expectations. When a pack like this exists, “good enough” stops being good enough. You won’t find a car like this in Assetto Corsa Evo.

And it helps that people with real driving context pay attention to this stuff. James Baldwin, who has real GT3 experience, has spoken positively about how sims can capture the character of cars like the 720S GT3 Evo when they’re done right, and the general tone around this release has been that RSS nailed the feel.

Final Thoughts

The RSS GT-M Macca 72 V8 Evo is a premium GT3 experience in Assetto Corsa. The visuals are borderline perfect, the physics are stable and believable, the force feedback is excellent, and the feature set has real substance behind it.

If you want a modern GT3-style car that feels polished, predictable, and properly “finished”, this is one of the easiest recommendations you can make in AC right now.

What car mod should I review next?
Drop your suggestions in the comments.

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