Track day enthusiasts are usually fond of the offerings from small manufacturers like Caterham, Radical, Dallara, BAC, Ariel, or Ginetta. However, besides the big names in the industry, there are also custom-made vehicles with racecar looks and track-focused setups. A good example is the pictured prototype that was handbuilt using Audi parts.

From the outside, the unnamed and unbranded vehicle is designed to look like the Group C racecars from the ’80s and the ’90s. It has a low and wide stance with a droplet-shaped canopy and a central driving position. The lack of mirrors and license plates suggests that this is a track-only vehicle, so you probably won’t be able to drive it on the road.

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Features like the prominent splitter, wide shoulders, NACA-style air ducts, side exhausts, roof scoop, large rear wing, and wide rear tires communicate track prowess although it is unclear if the build has any motorsport genes under this dress. According to the owner, it uses plenty of Audi parts, although the listing doesn’t go into specifics about the underpinnings or the specifications. From the looks of it, the model could be based on a custom chassis rather than using the architecture of a donor vehicle.

As for the powertrain, the rear-mounted V6 is sourced from the first-generation Audi A4. While the bi-turbo 2.7-liter V6 from the original RS4 would be the most fitting choice for such a build, the prototype comes fitted with the 2.8-liter unit taken from a lesser variant. This mill produced up to 190 hp (193 PS / 142 kW) which is still a fair amount of power for a lightweight vehicle, while it could be easily tuned for more. The owner suggests that the prototype is in working condition, even though it needs “minor works”.

The vehicle is located in the city of Vásárosnamény in Hungary and was up for sale on Facebook Marketplace, where it was recently shared in the Unique Cars For Sale 3.0 Group. The asking price was €20,000 ($21,840) which makes it more affordable than most track-day toys although you could easily buy and tune a used Mazda MX-5 for a lot less than that. In any case, the listing is no longer available, which suggests someone might have bought the unique-looking prototype.

Photos: Facebook Marketplace