In the high-performance track car territory, only a few models perfectly balance that sheer power and precision. And that’s what spawned me to write this Ford Mustang GT3 Vs Porsche 911 GT3 RS comparison. Which GT3 race car is better? These models come from extreme racing and high-performance lineages, both designed to dominate the racing world. After rejoining the track game, the Mustang GT3 recently qualified for 4th place already. And don’t even get me started on the Porsche 911 GT3 RS’s recent track accomplishments.Â
In this Ford Mustang GT3 vs Porsche 911 GT3 R race car comparison, I am covering how these track cars stack up against each other in terms of performance, design, and features.
Ford Mustang GT3 vs Porsche 911 GT3 RS Performance
At the heart of the Ford Mustang GT3 performance, is a race-tuned 5.4-liter V8 engine, developed with help from M-Sport** and Multimatic Motorsports. Based on the new Coyote 5.0-liter V-8, the engine produces 500 horsepower. Putting aside other Mustang GT3 specs, the race car’s V8 engine pairs with a unique rear-mounted transaxle. It features an unequal-length double-wishbone suspension to enhance cornering ability. This car is set to compete in major racing events like the 24 Hours of Le Mans and the World Endurance Championship.
Unlike the Mustang GT3’s 500-hp V8, the 2025 Porsche 911 GT3 RS brings a 4.0-liter flat-six engine that generates 518 horsepower. This makes the Porsche 911 GT3 RS more powerful than the Mustang GT3.
The Porsche 911 GT3 RS performance also includes a 9,000 RPM redline, providing an exhilarating, high-revving performance that sets it apart. The 911 GT3 RS race car’s suspension system includes a control-arm front suspension, derived from the 911 RSR and GT3 Cup race cars. For better track driving, the GT3 RS has adaptive dampers and Michelin Pilot Sport Cup 2 tires.
One of the top features is the Porsche 911 GT3 RS acceleration. On the test track, the GT3 RS reached 60 mph in 2.7 seconds and completed the quarter-mile in 10.9 seconds at 127 mph.
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Design and Aerodynamics
On the design side, this Mustang GT3 vs Porsche 911 GT3 RS race car comparison showcases aerodynamic and track-ready designs.
The Mustang GT3 features carbon-fiber body panels and extreme aerodynamic elements such as an enormous rear wing mounted from the roofline. This allows for optimized downforce, giving it a menacing look on the track. The Ford Mustang GT3’s aerodynamics also include a wider stance, with cutouts for improved airflow and cooling, which also makes it a standout.
Like the Mustang GT3, the Porsche 911 GT3 RS design also emphasizes aerodynamics with its gigantic rear wing. The sports car’s design includes a drag-reduction system inspired by Formula 1 cars. This system helps maximize speed and stability on straights. Its active anti-roll bars and lightweight design ensure that it’s just as adept on tight corners as it is on high-speed straights.
Mustang GT3 vs Porsche 911 GT3 RS Interior Comparison
To reduce weight. The Ford Mustang GT3 strips away all unnecessary components found in the mainstream 2024 model. So, the interior of the Mustang GT3 has a minimalist interior with a single Recaro racing seat, a roll cage, and a multifunctional steering wheel with countless switches and buttons.
The Porsche 911 GT3 RS offers a bit more refinement without sacrificing its track capabilities. The interior of the 911 GT3 RS is similar to other 911 models, featuring a 10.9-inch infotainment touchscreen with Apple CarPlay and Android Auto support. Though it lacks rear seats, the front is outfitted with lightweight bucket seats.
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Race Track Prowess
Both cars are born for the racetrack. The Ford Mustang GT3 debuts at the 2024 Rolex 24 at Daytona and competes in various championships worldwide. It’s designed with endurance racing in mind, thanks to its race-focused design elements. Its huge selling point is the V8 engine.
The Porsche 911 GT3 RS brings precise engineering and Formula 1-derived technologies. Like its competing race car, The GT3 RS is already an established legend on the track. The Porsche 911 GT3 RS has a good track record. It regularly sets record lap times in prestigious events like the Virginia International Raceway Lightning Lap. Its 9000-rpm redline and adaptive suspension provide a thrilling experience for drivers.
Conclusion: Which GT3 race car is better?
The Mustang GT3 vs Porsche 911 GT3 RS battle is an awesome one. Choosing between the Ford Mustang GT3 and Porsche 911 GT3 RS depends largely on your needs as a driver.
If you’re after raw V8 power, endurance capabilities, and an aggressive American muscle design, pick the Ford Mustang GT3.
If you prioritize precision engineering, a naturally aspirated flat-six, and a record-setting race pedigree, I recommend the Porsche 911 GT3 RS.
Either way, both cars are at the top of the GT3 class.