Porsche 718 Cayman GT4 CS 718 Cayman GT4 CS VS Audi R8 LMS GT4 R8 LMS GT4

Porsche 718 Cayman GT4 CS vs Audi R8 LMS GT4: Precision Versus Power in the GT4 Arena

When it comes to GT4 machinery, both the Porsche 718 Cayman GT4 CS and the Audi R8 LMS GT4 represent factory-built, track-focused machines—yet their approaches diverge sharply. Both are rear-wheel drive, purebred racers, but the Porsche leans on mid-engine agility and surgical balance, while the Audi makes its case with a charismatic V10 and a grander, more muscular architecture. Who comes out on top when rubber meets tarmac, and what do the numbers reveal about what kind of driver each car is truly for?

Lap Time Showdown: The Data Decides

Let’s start with what matters most to track day enthusiasts and serious competitors: lap times. Across five head-to-head benchmarks, the Cayman GT4 CS claims victory at four circuits, with the Audi R8 LMS GT4 eking out a solitary, but notable, win.

• Road America - Current: The Porsche lays down a scorching 2:19.67, leaving the Audi trailing with a 2:27.88. That’s a decisive margin of over 8 seconds—a chasm in the world of competitive lap times, and proof of the Porsche’s remarkable efficiency down long straights and through technical sections.
• Circuit Paul Ricard - Circuit 1C-V2: Again, the GT4 CS leads with a 2:14.9 to the Audi’s 2:17.577—a gap of almost 2.7 seconds.
• Circuit de Spa-Francorchamps - SPA: In stock trim, the Cayman’s 2:31.1 tops the R8’s 2:32.996 by nearly 1.9 seconds. Even with both cars unmodified, the Porsche’s innate balance shines through Eau Rouge and the technical mid-section.
• Dijon Prenois - Grand Prix: Porsche again, with a 1:23.975 versus the Audi’s 1:25.245, a margin of about 1.3 seconds.
• Apex Motor Club I - Phase I: Here, the tables turn. The Audi, in race trim, manages a 1:32.48, besting the stock Porsche’s 1:33.87 by 1.4 seconds. This suggests that, with the right setup and perhaps in the hands of a driver who can exploit its strengths, the R8 LMS GT4 can flip the script.

Summary? The Cayman GT4 CS is the consistently faster machine in most scenarios, but the R8 LMS GT4 can catch it—and surpass it—if the stars align, especially if modifications or tire choices swing in its favor.

Engineering Philosophies: Character and Capability

On paper, the Audi R8 LMS GT4 boasts more horsepower—495 PS from its bellowing 5.2-liter V10, compared to the Porsche’s 425 PS from a 4.0-liter flat-six. The torque split is closer, with the Porsche actually holding a small edge (425.73 Nm vs. 398 Nm). But the biggest difference is weight: the Cayman is over 300 pounds lighter (2910 lbs vs. 3218 lbs), and with its engine mid-mounted, it delivers an agility and rotation few can match in this class.

The R8, with its long wheelbase, front-mid engine placement, and brute-force power delivery, feels more like a grand tourer reimagined for the track. It rewards commitment and high-speed bravery, but asks more of its driver to rotate and place precisely in tight sections. The Cayman, by contrast, feels like a scalpel—precise, predictable, and forgiving, letting the driver lean on its balance lap after lap.

Value, Ownership, and the Target Driver

Both cars are purpose-built for the track, with price tags to match. The Porsche 718 Cayman GT4 CS, as a customer racing car, sits in the $170,000-$200,000 range depending on options and support packages; the Audi R8 LMS GT4 is similarly positioned, but often commands a premium owing to its V10 mystique and the R8’s road car cachet.

But the value equation goes deeper. The Porsche’s relative mechanical simplicity, lower running costs, and broader aftermarket support make it the darling of privateer racers and track-day regulars seeking every last hundredth. Its desirability has kept resale values strong, and a well-prepped GT4 CS remains a hot commodity in the club racing market.

The Audi, meanwhile, caters to a different crowd: those who crave the exotic engine note, a slightly more forgiving learning curve at high speed, and the cachet of R8 ownership—even if outright lap records may be harder to come by without significant setup work. It’s a car that can be made fast, but may not be the obvious choice for the driver chasing tenths on the stopwatch.

In the end, the Porsche is a world-beater out of the box, while the Audi offers a distinctive, characterful alternative for those wanting something a bit different—so long as they’re willing to put in the work to unlock its full potential.

Final Thoughts

On track, the Porsche 718 Cayman GT4 CS is the benchmark—quicker in nearly every head-to-head measured on LapMeta, thanks to its lighter weight and sublime mid-engine handling. The Audi R8 LMS GT4 still earns respect, especially when it’s allowed to flex its V10 muscle with the right modifications.

For the driver seeking the ultimate track tool, the Cayman GT4 CS is the sharper weapon. For those who want to stand out and savor unique V10 theatrics, the R8 LMS GT4 remains a compelling—if more niche—choice. Both are worthy flag bearers for their respective brands, but when the stopwatch rules, Porsche stands atop the podium.