Autoblog and Yahoo may earn commission from links in this article.My expert take on this 2023 Porsche 718 Cayman GT4 RS WeissachLet's start with the number that matters most right now: $148,000 with two days left and no reserve. That is, to put it plainly, a significant discount to where the market says this car should be.Comparable 2023 GT4 RS Weissach examples on Classic.com show a comp range of $189,800 to $216,404, and the average sale price across the GT4 RS model sits at $226,089, with the highest recorded sale reaching $1,800,000 for a 2023 Weissach example. Even at the low end of those comps, the current bid represents a meaningful gap.The mileage story here is straightforward and honest. The car has 4,100 miles total, with approximately 2,700 added by the current owner since purchasing it as a Porsche Approved CPO vehicle in May 2025. That is not a garage queen situation where someone bought it and was too scared to look at it sideways. The owner has been driving it, which is exactly what you should do with a GT4 RS, but the miles remain low enough to be considered essentially new.AdvertisementAdvertisementThe option list on this car is the kind that makes a spec sheet worth reading twice. Weissach Package, Chrono Package, PCCB with yellow calipers, front axle lift system, Satin White Gold Metallic forged magnesium wheels, Extended Deviated Stitching Interior Package, and a transferable CPO warranty running through November 2028. That last item alone is worth real money and is not something you typically get to inherit when buying a used GT4 RS on the open market.The only blemishes disclosed are a bubble in the paint protection film on the rear bumper cover and the usual PPF wear considerations. The seller has been transparent about it, which is the right way to run a BaT listing. The brake fluid was flushed in March 2026, oil changed, air filter, drive belt, and spark plugs replaced. This car is not overdue for anything.My prediction for the final hammer price is $165,000 to $185,000. The no reserve format means it will sell regardless, and the combination of the full Weissach spec, PCCB, magnesium wheels, low miles, and an active CPO warranty should attract serious bidders in the final hours. Anyone who wins this below $170,000 on a clean PPI is getting a very good deal.The offerMake: PorscheModel: 718 Cayman GT4 RS WeissachYear: 2023Mileage: 4,100 milesEngine: 4.0L naturally aspirated flat-sixPower: 493 HP / 331 lb-ft of torqueTransmission: 7-speed PDK dual-clutch automaticDrive type: Rear-Wheel Drive (RWD)Exterior color: GT Silver MetallicInterior color: Black leather and Arctic Grey Race-TexAsking price: Auction ending with 2 days left (Bring a Trailer)Vehicle location: Colorado, United StatesInterested in this 2023 Porsche 718 Cayman GT4 RS Weissach? View the listing here.Need New Tires? Save Up To 30% at Tire RackFind the perfect tires for your exact vehicle and driving style. Click here to shop all top-tier brands, including Michelin, Bridgestone, and more, directly at Tire Rack.Listing DetailsThe engine is where the GT4 RS starts its argument. The 4.0-liter naturally aspirated flat-six producing 493 horsepower and 331 lb-ft of torque is derived directly from the 911 GT3, and it is the kind of engine that makes turbocharged rivals feel a bit dishonest. It pulls cleanly all the way to a 9,000 rpm redline, which in a mid-engine car weighing under 3,100 pounds creates an experience that is equal parts sports car and barely contained race car. Power routes to the rear wheels through a seven-speed PDK transaxle accompanied by Porsche Torque Vectoring and a mechanically locking differential. This is not a car that asks much of you to go fast. It simply does it, repeatedly and without complaint.The Weissach Package adds meaningful substance beyond its visual statement. Exposed carbon fiber appears on the hood, intakes, side mirror housings, and rear wing, while the Satin White Gold Metallic forged magnesium wheels save unsprung weight over the already lightweight standard forged aluminum units. Titanium exhaust tips replace the standard items. Combined with the standard Sport exhaust, the result is a car that sounds like it belongs at Le Mans and looks like it snuck off the transporter.AdvertisementAdvertisementThe PCCB ceramic brakes with their unmistakable yellow calipers are the correct choice on a car like this, offering fade-resistant stopping power that steel rotors simply cannot match at track temperatures. The front axle lift system is the practical concession to real-world use, allowing the car to clear driveways and speed bumps without treating the carbon splitter as a consumable.Inside, the carbon fiber full bucket seats wear black leather and Arctic Grey Race-Tex trim with Weissach RS embroidery on the headrests. The GT Silver deviated stitching from the Extended Interior Package runs through the cabin with a precision that suggests at least one person at the factory took the job personally. The optional Chrono Package adds its stopwatch atop the dash, a small touch that reinforces the message this car has been trying to deliver since you opened the door.2023 Porsche 718 Cayman GT4 RS quick takeThe 718 Cayman GT4 RS is widely regarded as one of the finest driver's cars Porsche has ever built, and the Weissach Package version is the most focused expression of that. It is a car that was genuinely conceived on the racetrack and then given just enough road manners to stay legal. The fact that this example comes with a transferable CPO warranty through November 2028, a fresh service, full PPF coverage, and one of the most desirable option combinations available makes the current bid look like an opportunity that the final-hour crowd will not let pass quietly. At no reserve, it sells. The only question is by how much the bidding climbs in the last two days.AdvertisementAdvertisementDisclaimer: This post is for informational purposes only. We are not a dealership or broker. All vehicle specifications, pricing, and availability are subject to change without notice. We are not responsible for typographical errors, omissions, or the accuracy of the provided information. Please verify all details directly with the seller.This story was originally published by Autoblog on May 16, 2026, where it first appeared in the Car Buying section. Add Autoblog as a Preferred Source by clicking here.