The 996.1 GT3 was never sold in North America, so US examples arrive only as imports, and this one has been modified with respected Manthey hardware. It carries 18-inch two-piece wheels, a vented front bumper, Recaro buckets, a yellow roll bar, and an aftermarket exhaust with headers. Bidding stands at $102,000 with seven days remaining and eight bids placed.
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What it’s worth right now
996.1 GT3 values are climbing as the cars become eligible for import. Market data from Classic.com sets the 996.1 GT3 benchmark at $95,798, while 1999 GT3s are listed in Europe at $170,109 with 29,208 miles and $197,966 with 20,000 miles, and a 71,457-mile example in Portugal at $154,203.
The import status and modifications place this one between the benchmark and European asking prices. The Mezger engine, Speed Yellow paint, and Manthey hardware help, while the aftermarket tune and exhaust, partial records, and a US history that only begins in 2026 temper the number. Fair value lands between $110,000 and $140,000, with $125,000 most likely. The current bid of $102,000 has seven days to run against a reserve.
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Condition and details
The specification is purposeful. The car wears Speed Yellow with a vented front bumper and Manthey decals, and it rides on 18-inch two-piece wheels with Michelin Pilot Sport tires the seller says were fitted after the photos, Manthey KW coilovers, upgraded suspension parts, and six-piston front brakes. The option codes confirm an Italian-market car with automatic climate control and a leather dash.
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The engine is modified. The Mezger flat-six carries a carbon fiber intake, an aftermarket tune, a single-mass flywheel, and an aftermarket exhaust with headers, and the seller does not specify its output. Inside are Recaro buckets in black leather, a yellow roll bar and belts, a Becker CDR-22 stereo, and a fire extinguisher.
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Documentation needs review. The car arrived in the US in 2025, Carfax begins in January 2026, and only partial records accompany the sale. Because of the tune and exhaust, a buyer should confirm the car will pass emissions in their state. It carries a Montana title, so a buyer should confirm how their home state handles the transfer. A pre-purchase inspection from a Porsche specialist should check the engine and the clutch.
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The offer
| Specification | Detail |
|---|---|
| Make | Porsche |
| Model | 911 GT3 (996.1) |
| Year | 1999 |
| Mileage | 54,000 kilometers (33,554 miles) shown |
| Engine | 3.6-liter Mezger flat-six with aftermarket tune |
| Power | Not specified by the seller |
| Transmission | Six-speed manual |
| Drive type | Rear wheel drive with limited-slip differential |
| Exterior color | Speed Yellow |
| Interior color | Black leather |
| Current bid | $102,000 with seven days remaining |
Interested in this car? View the listing here.
What makes the 996.1 Porsche 911 GT3 unique
The 996.1 GT3 launched Porsche’s line of GT3 road cars in 1999, pairing a race-derived Mezger flat-six with a lighter, stiffer chassis and a manually adjustable rear wing. Porsche built 1,858 examples, and none were sold in North America, which makes them rare in the US.
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The Mezger engine has become a key reason collectors seek these cars. Its racing lineage and durability set it apart from later designs, and early GT3s now command strong prices. Manthey modifications carry credibility, but originality still matters to many buyers.
My take
At $102,000 with eight bids and seven days to run, my call is $125,000, with $140,000 possible if bidders value the Manthey hardware and Speed Yellow paint. What makes it compelling is its rarity, since a US-registered 996.1 GT3 with a Mezger engine and Manthey suspension is an unusual find. What tempers it is the aftermarket tune and exhaust and the short documented history. Confirm emissions compliance in your state, then bid.
Disclaimer: 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.
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About the author
Kyle Edward
Editor-in-Chief, Autoblog